BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–1

VEHICLE STABILITY CONTROL

SYSTEM
PRECAUTION
• When there is a malfunction in the contact point of the
terminals or installation problems with part, removal and
installation of the suspected problem parts may return the
system to the normal condition either completely or
temporarily.
• In order to determine the malfunction area, be sure to
check the conditions at the time the malfunction occurred,
such as by DTC output and the freeze frame data output,
and record it before disconnecting each connector or
removing and installing parts.
• Be sure to remove and install the skid control ECU, ABS &
TRAC actuator and each sensor with the IG switch OFF
unless specified in the inspection procedure.
• When removing and installing the skid control ECU, ABS &

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TRAC actuator and each sensor , be sure to check that the
normal display is output in test mode inspection and in
DTC output inspection after installing all the parts.
• After replacing the yaw rate sensor and / or the brake
actuator assembly, make sure to perform yaw rate sensor
and deceleration sensor zero point calibration (See page
BC-5).
• CAN communication system is used for the data
communication between the skid control ECU (included in
the actuator), the steering angle sensor, and the yaw rate
sensor (the deceleration sensor is included). If there is
trouble in the CAN communication line, the DTC in the
communication line is output.
• If the DTC in the CAN communication line is output, repair
the malfunction in the communication line and
troubleshoot the ABS with EBD & BA & TRAC & VSC
systems under the condition that data communication is
normal.
• Since the CAN communication line has its own length and
route, it can not be repaired temporarily with the bypass
wire, etc.
NOTICE:
When disconnecting the negative (-) battery terminal,
initialize the following systems after the terminal is
reconnected.
System Name See procedure
Power Window Control System WS-12
Sliding Roof System RF-22 and RF-4
lighting System (Adaptive Front-lighting System) LI-17
Power Back Door System ED-33
BC
 BC–2 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

PARTS LOCATION
FL BLOCK
4WD: J/B NO.2
-ABS MTR RELAY
BRAKE FLUID LEVEL WARNING SWITCH

REAR SPEED
ABS & TRAC ACTUATOR
SENSOR
(SKID CONTROL ECU)

FRONT SPEED
SENSOR

SENSOR ROTOR

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2WD:

COMBINATION METER

- ABS WARNING LIGHT

- VSC WARNING LIGHT

SENSOR ROTOR
- BRAKE WARNING LIGHT
REAR SPEED SENSOR
- TRAC OFF INDICATOR LIGHT

- SLIP INDICATOR LIGHT

STEERING ANGLESENSOR
BRAKE PEDAL LOAD
SENSING SWITCH

SKID CONTROL BUZZER

PARKING BRAKE
SWITCH

DRIVER SIDE J/B YAW RATE SENSOR

(INCLUDE DECELERATION
SENSOR)

DLC3
STOP LIGHT SWITCH

TRAC CONTROL SWITCH

BC C118788E08
BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–3

SYSTEM DESCRIPTION
1. SYSTEM DESCRIPTION
(a) ABS
(Anti-lock Brake System)
The ABS helps prevent wheels from locking when
the brake is applied firmly or when braking on a
slippery surface.
(b) EBD
(Electronic Brake force Distribution)
The EBD control utilizes ABS, realizing proper
brake force distribution between front and rear
wheels in accordance with driving conditions. In
addition, during cornering braking, it also controls
the brake force of the right and left wheels, helping
to maintain vehicle behavior.
(c) BA
(Brake Assist)
The primary purpose of the brake assist system is to
provide an auxiliary brake force to assist the driver

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who cannot generate a large enough brake force
during emergency braking, thus helping to maximize
the vehicle's brake performance.
(d) TRAC
(Traction Control)
The TRAC system helps prevent the drive wheels
from slipping if drive presses down on the
accelerator pedal excessively when starting off or
accelerating on a slippery surface.
(e) VSC
(Vehicle Stability Control)
The VSC system helps prevent the vehicle from
slipping sideways as a result of strong front wheel
skid or strong rear wheel skid during cornering.

BC
 BC–4 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

HOW TO PROCEED WITH

TROUBLESHOOTING
The intelligent tester can be used at step 2, 5, 8, 11.

1 Vehicle Brought to Workshop

2 Check and Clear DTCs and Freeze Frame Data

HINT:
See page BC-16 and BC-17.

3 Problem Symptom Confirmation

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Symptom does not occur: Go to step 5

Symptom occurs: Go to step 6

4 Symptom Simulation

5 DTC Check

HINT:
See page BC-16.
There is no output: Go to step 7

There is output: Go to step 8

6 Problem Symptoms Table

HINT:
See page BC-13.
Check for fluid leakage and Go to step 10

7 DTC Chart
BC HINT:
See page BC-21.
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–5

8 Circuit Inspection

9 Identification of Problem

10 Repair

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11 Confirmation Test

End

CALIBRATION
Intelligent Tester 1. CLEAR ZERO POINT CALIBRATION (WHEN USING
INTELLIGENT TESTER):
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch on.

DLC3

CAN VIM
C104144E05

(c) Operate the intelligent tester to erase the codes

(select "RESET MEMORY").
HINT:
Refer to the intelligent tester operator's manual for
further details.
(d) Using the intelligent tester, perform zero point
calibration of the yaw rate and deceleration sensor.
BC
C106531
 BC–6 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

2. PERFORM ZERO POINT CALIBRATION OF YAW

RATE AND DECELERATION SENSOR (WHEN USING
INTELLIGENT TESTER):
NOTICE:
• While obtaining the zero point, do not vibrate the
vehicle by tilting, moving or shaking it and keep it
in a stationary condition. (Do not turn the ignition
switch on.)
• Be sure to do this on a level surface (with an
inclination of less than 1 %).
(a) Procedures for test mode.
(1) Check that the steering wheel is in the
straightahead position and move the shift lever
to the P position and apply the parking brake.
(2) Connect the intelligent tester to the DLC3.
(3) Turn the ignition switch on.
Intelligent Tester

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DLC3

CAN VIM
C104144E05

(4) Set the intelligent tester to test mode (select

"TEST MODE").
HINT:
Refer to the intelligent tester operator's manual
for further details.
(b) Obtain the zero point of the yaw rate and
deceleration sensor.
(1) Keep the vehicle in the stationary condition on a
level surface for 2 seconds or more.
C106532

(2) Check that the ABS warning light and VSC

Blinking Pattern in TEST MODE:
warning light blink.
HINT:
0.125 sec. 0.125 sec. • If the ABS warning light and VSC warning
ON light do not blink perform zero point
calibration again.
• The zero point calibration is performed only
once after the system enters the test mode.
BC OFF • Calibration cannot be performed again until
BR03904E37 the stored data is cleared once.
(c) Turn the ignition switch off and disconnect the
intelligent tester.
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–7

3. PERFORM ZERO POINT CALIBRATION OF YAW

RATE AND DECELERATION SENSOR (WHEN USING
SST CHECK WIRE):
NOTICE:
• While obtaining the zero point, do not vibrate the
vehicle by tilting, moving or shaking it and keep it
in a stationary condition. (Do not turn the ignition
switch on.)
• Be sure to do this on a level surface (with an
inclination of less than 1 %).
(a) Clear the zero point calibration.
(1) Turn the ignition switch on.
(2) Using SST, connect and disconnect terminals
DLC3: TS and CG of the DLC3 4 times or more within 8
TS
seconds.
D1 SST 09843-18040
(b) Procedures for test mode.
(1) Turn the ignition switch off.
(2) Using SST, connect terminals TS and CG of the

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DLC3.
SST 09843-18040
CG
B124401E18 (3) Check that the steering wheel is in the
straightahead position and move the shift lever
to the P position.
(c) Obtain the zero point of the yaw rate and
deceleration sensor.
(1) Turn the ignition switch on.
(2) Keep the vehicle in a stationary condition on a
level surface for 2 seconds or more.
(3) Check that the ABS warning light and VSC light
Blinking Pattern in TEST MODE:
blink (test mode).
HINT:
0.125 sec. 0.125 sec. • If the ABS warning light and VSC warning
ON light do not blink perform zero point
calibration again.
• The zero point calibration is performed only
once after the system enters the test mode.
OFF • Calibration cannot be performed again until
BR03904E38 the stored data is cleared once.
(d) Turn the ignition switch off and disconnect the SST
from the DLC3.

BC
 BC–8 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

ABS Warning Light BRAKE Warning

TEST MODE PROCEDURE
Light 1. WARNING LIGHT AND INDICATOR LIGHT BULB
USA: USA: CHECK
(a) Check the warning lights.
(1) Release parking brake pedal.
(2) When the ignition switch is turned to the ON
Canada: Canada:
position, check that the ABS warning light,
BRAKE warning light, VSC warning light, TRAC
OFF indicator light (2WD) and SLIP indicator
light stay on for approx. 3 seconds.
VSC Warning Light SLIP Indicator Light HINT:
• When the parking brake is applied or the level
of brake fluid is low, the BRAKE warning light
comes on.
• If the ECU has any stored DTCs, the ABS
TRAC OFF Indicator Light (2WD) warning light, VSC warning light and TRAC
OFF indicator light (2WD) comes on.
• If the indicator does not come on, inspect it
the bulb is blown out, and also the wire

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F045096E07
harness between the skid control ECU and
the combination meter.
• If the indicator remains on, proceed to
troubleshooting for the light circuit below.
Trouble Area See procedure
ABS warning light circuit BC-79
VSC warning light circuit BC-83
BRAKE warning light circuit BC-87
TRAC OFF indicator light circuit (2WD) BC-91
SLIP indicator light circuit BC-96

2. SENSOR SIGNAL CHECK BY TEST MODE (SIGNAL

CHECK) (WHEN USING INTELLIGENT TESTER):
(a) When having replaced the skid control ECU and / or
yaw rate and deceleration sensor, perform zero
point calibration of the yaw rate and deceleration
sensor.
HINT:
• If the ignition switch is turned from the ON
position to the ACC or off during test mode
(signal check), DTCs of the signal check function
will be erased.
• During test mode (signal check), the skid control
ECU records all DTCs of the signal check
function. By performing the test mode (signal
check), the codes are erased if normality is
confirmed. The remaining codes are the codes
where an abnormality was found.

BC
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–9

(b) Procedures for test mode.

(1) Turn the ignition switch off.
Intelligent Tester
(2) Connect the intelligent tester to the DLC3.
(3) Check that the steering wheel is in the
straightahead position and move the shift lever
to the P position.
(4) Turn the ignition switch on.

DLC3

CAN VIM
C104144E06

(5) Set the intelligent tester to test mode (select

"SIGNAL CHECK").
HINT:

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Refer to the intelligent tester operator's manual
for further details.

C106533

(6) Check that the ABS warning light and VSC

Blinking Pattern in TEST MODE:
warning light blink and "CHECK VSC SYSTEM"
is displayed on the multi information display (test
0.125 sec. 0.125 sec. mode).
ON HINT:
If the ABS warning light and VSC warning light
do not blink, inspect the ABS warning light circuit
and / or VSC warning light circuit.
OFF
Trouble Area See procedure
BR03904E42
ABS warning light BC-79
VSC warning light BC-83

3. MASTER CYLINDER PRESSURE SENSOR CHECK

(WHEN USING INTELLIGENT TESTER):
(a) Leave the vehicle in a stationary condition and
release the brake pedal for 1 second or more, and
quickly depress the brake pedal with a force of 98 N
(10 kgf, 22 lbf) or more for 1 second or more.
(b) Check the ABS warning light stays on for 3
seconds.
HINT:
• Ensure that the ABS warning light comes on.
• While the ABS warning light stays on, continue to
depress the brake pedal with a force of 98 N (10
BC
kgf, 22 lbf) or more.
 BC–10 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

• The ABS warning light comes on for 3 seconds

every time brake pedal operation above is
performed.
4. SPEED SENSOR CHECK (WHEN USING
INTELLIGENT TESTER):
(a) Check the backward signal.
(1) Drive the vehicle in reverse for more than 1
second at 2 mph (3 km/h) or higher.
HINT:
Drive the vehicle in reverse and check the speed
sensor signal. Note that the signal check cannot
be completed if the vehicle speed is 28 mph (45
km/h) or more.
(b) Check the forward signal.
(1) Drive the vehicle straight forward. Drive the
vehicle at a speed of 28 mph (45 km/h) or higher
for several seconds and check that the ABS
warning light goes off.
HINT:

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The signal check may not be completed if the
vehicle has its wheels spun or the steering
wheel turned during this check.
(c) Stop the vehicle.
Blinking Pattern in TEST MODE:
5. YAW RATE SENSOR CHECK (WHEN USING
INTELLIGENT TESTER):
0.125 sec. 0.125 sec. (a) Check the output of the yaw rate sensor.
ON (1) Move the shift lever to the D position, drive the
vehicle at a speed of approximately 3 mph (5
km/h), and turn the steering wheel either to the
left or right 90° or more until the vehicle makes a
OFF 180° turn.
BR03904E40 (2) Stop the vehicle and move the shift lever to the P
position. Check that the skid control buzzer
sounds for 3 seconds.
HINT:
• If the skid control buzzer sounds, the signal
check is completed normally.
• If the skid control buzzer does not sound,
check the skid control buzzer circuit, then
perform the signal check again.
• If the skid control buzzer does not sound yet,
there is a malfunction in the VSC sensor, so
check the DTC.
• Make 180° turn. At the end of the turn, the
direction of the vehicle should be within 180°
+- 5° of its start position.
• Do not spin the wheels.

BC
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–11

6. SENSOR SIGNAL CHECK BY TEST MODE (SIGNAL

CHECK) (WHEN USING SST CHECK WIRE):
(a) When having replaced the skid control ECU and / or
yaw rate and deceleration sensor, perform zero
point calibration of the yaw rate and deceleration
sensor.
HINT:
• If the ignition switch is turned from the ON
position to the ACC or off during test mode
(signal check), DTCs of the signal check function
will be erased.
• During test mode (signal check), the skid control
ECU records all DTCs of the signal check
function. By performing the test mode (signal
check), the codes are erased if normality is
confirmed. The remaining codes are the codes
where an abnormality was found.
(b) Procedures for test mode.
(1) Turn the ignition switch off.

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(2) Check that the steering wheel is in the
straightahead position and move the shift lever
to the P position.
(3) Using STT, connect terminals TS and CG of the
DLC3:
TS DLC3.
D1
SST 09843-18040
(4) Turn the ignition switch on.

CG
B124401E19

(5) Check that the ABS warning light and VSC

Blinking Pattern in TEST MODE:
warning light blink (test mode).
HINT:
0.125 sec. 0.125 sec. If the ABS warning light and VSC warning light
ON do not blink, inspect the TS and CG terminal
circuit, ABS warning light circuit and / or warning
light circuit.
Trouble Area See procedure
OFF
TS and CG terminal circuit BC-103
BR03904E41
ABS warning light circuit BC-79
VSC warning light circuit BC-83

7. MASTER CYLINDER PRESSURE SENSOR CHECK

(WHEN USING SST CHECK WIRE):
(a) Leave the vehicle in a stationary condition and
release the brake pedal for 1 second or more, and
quickly depress the brake pedal with a force of 98 N
(10 kgf, 22 lbf) or more for 1 second or more.
BC
 BC–12 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

(b) Check the ABS warning light stays on for 3

seconds.
HINT:
• At this time, the ABS warning light stays on for 3
seconds.
• While the ABS warning light stays on, continue to
depress the brake pedal with a force of 98N (10
kgf) or more.
• The ABS warning light comes on for 3 seconds
every time the brake pedal operation above is
performed.
• If master cylinder pressure sensor check can not
be completed, do not depress the brake pedal
frequently. It may further reduce negative
pressure and make the sensor check difficult to
complete.
• If the negative pressure is insufficient, master
cylinder pressure sensor check may not be
completed. In this case, idle the engine to get

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enough negative pressure.
• If the brake pedal is depressed during engine
stop, negative pressure may become insufficient
and the BRL may come on. (It runs the motor
and performs incorrect control.)
8. SPEED SENSOR CHECK (WHEN USING SST CHECK
WIRE):
(a) Check the speed sensor signal.
(1) Drive the vehicle straight forward. Drive the
vehicle at a speed of 28 mph (45 km/h) or higher
for several seconds and check that the ABS
warning light goes off.
HINT:
The signal check may not be completed if the
vehicle has its wheels spun or the steering
wheel turned during this check.
(b) Stop the vehicle.
NOTICE:
• Before performing the speed sensor signal
check, complete the deceleration sensor and
master cylinder pressure sensor checks.
• The speed sensor signal check may not be
completed if the speed sensor signal check is
started while turning the steering wheel or
spinning the wheels.
• After the ABS warning light goes off, if
vehicle speed exceeds 50 mph (80 km/h), a
signal check code will be stored again.
Decelerate or stop the vehicle before the
speed reaches 50 mph (80 km/h).
• If the signal check has not been completed,
BC the ABS warning light blinks while driving
and the ABS system does not operate.
BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–13

HINT:
When the signal check has been completed, the
ABS warning light goes off while driving and blinks
in the test mode pattern while stationary.
9. YAW RATE SENSOR CHECK (WHEN USING SST
CHECK WIRE):
(a) Check the zero point voltage of the yaw rate sensor.
(1) Keep the vehicle in a stationary condition on a
level surface for 1 second or more.
(b) Check the output of the yaw rate sensor.
(1) Move the shift lever to the D position, drive the
vehicle at a speed of approximately 3 mph (5
km/h), and turn the steering wheel either to the
left or right 90° or more until the vehicle makes
180° turn.
(2) Stop the vehicle and move the shift lever to the
position. Check that the skid control buzzer
sounds for 3 seconds.
HINT:

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• If the skid control buzzer sounds, the signal
check is completed normally.
• If the skid control buzzer does not sound,
check the skid control buzzer circuit, then
perform the signal check again.
• If the skid control buzzer does not sound yet,
there is a malfunction in the yaw rate sensor,
so check the DTC.
• Make a 180° turn. At the end of the turn, the
direction of the vehicle should be within 180
+- 5° of its start position.
• Do not spin the wheels.

BC
 BC–14 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

PROBLEM SYMPTOMS TABLE

ABS WITH EBD & BA & TRAC & VSC SYSTEM
Symptom Suspected area See page
1. Check the DTC again and make sure that the normal code
BC-16
is output.
2. IG power source circuit and ground circuit. BC-65
3. Speed sensor circuit (Front) BC-24
ABS does not operate 4. Speed sensor circuit (Rear) BC-30
5. Check the ABS &TRAC actuator with a intelligent tester. BC-108
6. If the symptoms still occur even after the above circuits in
suspected areas are inspected and proved to be normal, -
replace the skid control ECU.
1. Check the DTC again and make sure that the normal code
BC-16
is output.
2. Speed sensor circuit (Front) BC-24
3. Speed sensor circuit (Rear) BC-30
ABS does not operate efficiently 4. Stop light switch circuit BC-70
5. Check the ABS &TRAC actuator with a intelligent tester. BC-108
6. If the symptoms still occur even after the above circuits in

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suspected areas are inspected and proved to be normal, -
replace the skid control ECU.
1. ABS warning light remains on circuit -
ABS warning light abnormal (Remain ON)
2. Skid control ECU -
1. Check the DTC again and make sure that the normal code
BC-16
is output.
2. TC and CG terminal circuit BC-103
DTC of ABS check cannot be done
3. If the symptoms still occur even after the above circuits in
suspected areas are inspected and proved to be normal, -
replace the skid control ECU.
1. TS and CG terminal circuit BC-105
Sensor signal check cannot be done
2. Skid control ECU -
1. Check the DTC again and make sure that the normal code
BC-16
is output.
2. IG power source circuit and ground circuit. BC-65
3. Check the hydraulic circuit for leakage. -
4. Speed sensor circuit (Front) BC-24
5. Speed sensor circuit (Rear) BC-30
VSC and/or TRAC does not operate 6. Deceleration sensor circuit (Calibration) BC-5
7. Deceleration sensor circuit (Malfunction) BC-62
8. Yaw rate sensor circuit BC-62
9. Steering sensor circuit BC-59
10. If the symptoms still occur even after the above circuits in
suspected areas are inspected and proved to be normal, -
replace the skid control ECU.
1. SLIP indicator light circuit BC-96
SLIP indicator light abnormal
2. Skid control ECU -
1. Check the DTC again and make sure that the normal code
BC-16
is output.
2. TRAC control switch circuit BC-91
TRAC OFF indicator abnormal

BC 3. If the symptoms still occur even after the above circuits in

suspected areas are inspected and proved to be normal, -
replace the skid control ECU.
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–15

Symptom Suspected area See page

1. Check the DTC again and make sure that the normal code
BC-16
is output.
2. TC and CG terminal circuit BC-103
DTC of VSC check cannot be done
3. If the symptoms still occur even after the above circuits in
suspected areas are inspected and proved to be normal, -
replace the skid control ECU.
1. Check the DTC again and make sure that the normal code
BC-16
is output.
2. VSC warning light remains on circuit BC-83
VSC warning light abnormal (Remain ON)
3. If the symptoms still occur even after the above circuits in
suspected areas are inspected and proved to be normal, -
replace the skid control ECU.

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BC
 BC–16 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

TERMINALS OF ECU
1. SKID CONTROL ECU

S1

F045080E08

Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
BM (S1-2) - GND1 (S1- IG switch ON, pump motor
B-W - W-L, W-B Motor relay test input 10 to 14 V
32), GND2 (S1-1) running
Front RH wheel speed IG switch ON, slowly turn
FR+ (S1-3) - FR- (S1-17) V-R Pulse generation
signal input right front wheel
Rear RH wheel speed IG switch ON, slowly turn

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RR+ (S1-5) - RR- (S1-19) L-B - BR Pulse generation
signal input right front wheel
FSW+ (S1-7) - GND1 (S1- IG switch ON, brake pedal
LG - W-L, W-B FSW switch input 2 to 4 V
32), GND2 (S1-1) released
TRC+ (S1-8) - TRC- (S1- ECM communication
BR - P IG switch ON Pulse generation
22) output
ENG+ (S1-9) - ENG- (S1-
G - LB ECM communication input IG switch ON Pulse generation
23)
NEO (S1-10) - GND1 (S1- Engine revolution signal
V - W-L, W-B Engine idling Pulse generation
32), GND2 (S1-1) input
CANH (S1-11) - CANL
L-W CAN communication line IG switch OFF 54 to 67 Ω
(S1-25)
SP1 (S1-12) - GND1 (S1- Vehicle drives at about 12
BR - W-L, W-B Speed signal output Pulse generation
32), GND2 (S1-1) mph (20 km/h)
D/G (S1-13) - GND1 (S1- Diagnosis tester
L-B - W-L, W-B IG switch ON 10 to 14 V
32), GND2 (S1-1) communication line
Fail safe motor relay
MRF (S1-14) - R+ (S1-45) R-Y IG switch ON 10 to 14 V
output
MR (S1-15) - R+ (S1-45) L-Y Motor relay output IG switch ON, pump motor 10 to 14 V
running

STPO*1 (S-16) - GND1 G - W-L, W-B Stop light relay output IG switch ON 10 to 14 V
(S1-32), GND2 (S1-1)
Front LH wheel speed IG switch ON, slowly turn
FL+ (S1-18) - FL- (S1-4) G-B Pulse generation
signal input left front wheel
Rear LH wheel speed IG switch ON, slowly turn
RL+ (S1-20) - RL- (S1-6) O -W Pulse generation
signal input left rear wheel

STP2*1 (S1-27) - GND1 GR - W-L, W-B Stop light relay input

Stop light switch ON
8 to 14 V
(S1-32), GND2 (S1-1) (Brake pedal depressed)

STP2*1 (S1-27) - GND1 GR - W-L, W-B Stop light relay input

Stop light switch OFF
Below 1.5 V
(S1-32), GND2 (S1-1) (Brake pedal released)
TS (S1-24) - GND1 (S1-
LG-B - W-B, W-B Sensor check input IG switch ON 10 to 14 V
32), GND2 (S1-1)

STP1*1 (S1-27) - GND1 W - W-L, W-B Stop light switch input

Stop light switch ON
8 to 14 V
BC (S1-32), GND2 (S1-1) (Brake pedal pushed)

STP1*1 (S1-27) - GND1 W - W-L, W-B Stop light switch input

Stop light switch OFF
Below 1.5 V
(S1-32), GND2 (S1-1) (Brake pedal released)
PKB (S1-28) - GND1 (S1- IG switch ON, parking
LG - W-L, W-B Parking brake switch input Below 1.5 V
32), GND2 (S1-1) brake switch ON
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–17

Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
PKB (S1-28) - GND1 (S1- IG switch ON, parking
LG - W-L, W-B Parking brake switch input 10 to 14 V
32), GND2 (S1-1) brake switch OFF
WA (S1-29) - GND1 (S1- IG switch ON, ABS
V - W-L, W-B ABS warning light output 6 to 11 V
32), GND2 (S1-1) warning light ON
WA (S1-29) - GND1 (S1- IG switch ON, ABS
V - W-L, W-B ABS warning light output Below 2.0 V
32), GND2 (S1-1) warning light OFF
BZ (S1-30) - GND1 (S1- IG switch ON, VSC buzzer
O - W-L, W-B Buzzer output Below 1.0 ←→10 to 14 V
32), GND2 (S1-1) sounds
BZ (S1-30) - GND1 (S1- IG switch ON, VSC buzzer
O - W-L, W-B Buzzer output 10 to 14 V
32), GND2 (S1-1) does not sound
+BS (S1-31) - GND1 (S1- Solenoid relay power
L - W-L, W-B Always 10 to 14 V
32), GND2 (S1-1) supply
VSCW (S1-36) - GND1 IG switch ON, VSC
R - W-L, W-B VSC warning light output Below 2.0 V
(S1-32), GND2 (S1-1) warning light ON

RRO*3, *4 (S1-39) - GND1 O - W-L, W-B

Rear RH wheel speed Vehicle drives at about 20
Plus generation
(S1-32), GND2 (S1-1) signal output km/h (12mph)

RRO*3, *4 (S1-40) - GND1 P - W-L, W-B

Rear LH wheel speed Vehicle drives at about 20
Plus generation
(S1-32), GND2 (S1-1) signal output km/h (12mph)
WFSE (S1-42) - GND1
G - W-L, W-B WFSE input IG switch ON 10 to 14 V

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(S1-32), GND2 (S1-1)
CSW (S1-43) - GND1 (S1-
B - W-L, W-B TRAC OFF switch input TRAC OFF switch OFF 10 to 14 V
32), GND2 (S1-1)
BRL (S1-44) - GND1 (S1- IG switch ON, BRAKE
GR - W-L, W-B Brake warning light output 6 to 11 V
32), GND2 (S1-1) warning light ON
BRL (S1-44) - GND1 (S1- IG switch ON, BRAKE
GR - W-L, W-B Brake warning light output Below 2.0 V
32), GND2 (S1-1) warning light OFF
R+ (S1-45) - GND1 (S1- Power supply for motor
Y - W-L, W-B IG switch ON 10 to 14 V
32), GND2 (S1-1) relay
IG1 (S1-46) - GND1 (S1-
P - W-L, W-B IG1 power supply IG switch ON 10 to 14 V
32), GND2 (S1-1)

*1: w/ Dynamic Laser Cruise Control

*2: w/o Dynamic Laser Cruise Control
*3: w/ Air Suspension System
*4: w/o Air Suspension System
DTC CHECK / CLEAR
Intelligent Tester 1. DTC CHECK/CLEAR (WHEN USING INTELLIGENT
TESTER):
(a) DTC check
(1) Connect the intelligent tester to the DLC3.
(2) Turn the ignition switch on.
(3) Read the DTCs following the prompts on the
tester screen.
(b) DTC clear
(1) Connect the intelligent tester to the DLC3.
(2) Turn the ignition switch on.
DLC3 (3) Operate the intelligent tester to clear the codes.
HINT:
CAN VIM Refer to the intelligent tester operator's manual
C104144E07
for further details.
BC
 BC–18 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

2. DTC CHECK/CLEAR (WHEN USING SST CHECK

DLC3 TC WIRE):
(a) DTC check
D1 (1) Using SST, connect terminals TC and CG of the
DLC3.
SST 09843-18040
(2) Turn the ignition switch on.
(3) Read DTC from the ABS and VSC control
warning lights on the combination meter.
CG
B124401E20

Normal System Code: Trouble Code (Example Codes 11 and 21):

0.25 sec. 0.5 sec.

2.5 sec.
0.25 sec. 0.5 sec.
1.5 sec.
2 sec. 4 sec.
4 sec.
Repeat
ON ON

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OFF OFF

Code 11 Code 21
I042843E03

HINT:
• If no code appears, inspect the TC and CG
terminal circuit, and ABS and VSC warning
light circuits.
Trouble Area See Procedure
TC and CG terminal circuit BC-103
ABS warning light circuit BC-79
VSC warning light circuit BC-83

• As an example, the illustration below shows

the blinking patterns of the normal system
code and trouble codes 31 and 43, and
display of the normal system code.
(4) Codes are explained in the code table (See
page BC-21).
(5) After completing the check, disconnect terminals
TC and CG of the DLC3, and turn off the display.
If 2 or more DTCs are detected at the same
time, the DTCs will be displayed in ascending
order.

BC
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–19

(b) DTC clear

DLC3 TC (1) Using SST, connect terminals TC and CG of the
DLC3.
D1 SST 09843-18040
(2) Turn the ignition switch on.

CG
B124401E40

(3) Clear the DTCs stored in the ECU by depressing

the brake pedal 8 times or more within 5
seconds.
(4) Check that the ABS warning and brake control
lights and multi information display indicate the
normal system code.
(5) Remove the SST from the terminals of the
DLC3.
HINT:

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C104154 Clearing the DTCs cannot be performed by
removing the battery cable or the ECU-IG NO.1
fuse.
3. END OF DTC CHECK/CLEAR (WHEN USING SST
CHECK WIRE):
(a) Turn the ignition switch on.
(b) Check that the ABS and brake control warning lights
go off within approximately 3 seconds.

BC
 BC–20 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

FREEZE FRAME DATA

1. FREEZE FRAME DATA
(a) The vehicle (sensor) status, stored during ABS and /
or VSC operation or at the time of an error code
detection, can be displayed by the intelligent tester.
(b) Only one record of freeze frame data is stored and
the freeze frame data generated during ABS and /
or VSC operation are updated whenever the vehicle
status is changed. Also, the number of the ignition
switch is ON after the freeze frame data is stored
can be stored up to 31 and it can be displayed. After
storing the DTC, the freeze frame data is not up-
dated.
HINT:
If the ignition switch "ON" operation exceeds 31
times, "31"appears on the display.
(c) If a malfunction occurs, the freeze frame data is
stored but the ABS actuation data is deleted.

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Intelligent tester display Measurement Item Reference Value
VEHICLE SPD Wheel speed sensor reading Speed indicated on speedometer
STOP LIGHT SW Stop light switch signal Stop light switch ON: ON, OFF: OFF
Number of operations of ignition
# IG ON switch ON after memorizing freeze 0 to 31
frame data
Master cylinder pressure sensor Brake pedal release : 0.3 to 0.9 V
MAS CYL PRESS
reading Brake pedal depress: 0.8 to 4.5 V
Master cylinder pressure sensor
MASS PRESS GRADE -30 to 200 MPa/s
change
ABS activated: ABS
VSC/TRC activated: VSC/TRC
SYSTEM System status BA activated: BA
Fail safe mode activated: FAIL SF
No system activated: NO SYS
YAW RATE Yaw rate angle sensor reading -100 to 100
Left turn: Increase
STEERING ANG Steering sensor reading
Right turn: Drop
Release accelerator pedal: Approx. 0 deg.
THROTTLE Throttle position sensor reading
Depress accelerator pedal: Approx. 90 deg.
G (RIGHT & LEFT) Right and left G -1.869 to 1.869
G (BACK & FORTH) Back and forth G -1.869 to 1.869
TRAC OFF SW ON: ON
VSC (TRC) OFF SW* VSC OFF switch signal
OFF: OFF
FAIL
P,N
R
D
SHIFT POSITION Shift lever position
4
3
2
L

*: 2WD
BC
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–21

DATA LIST / ACTIVE TEST

HINT:
With the intelligent tester connected to the DLC3 and the
ignition switch in the ON position, the ABS, TRAC and VSC
data list can be displayed. Follow the prompts on the tester
screen to access the DATA LIST.
Measurement Item / Range
Item Normal Condition Diagnostic Note
(Display)
ABS MOT RELAY ABS motor relay / ON or OFF ON : Motor relay ON -
SOL RELAY Solenoid relay / ON or OFF ON : Solenoid relay ON -
VSC / TRC OFF SW* TRAC control switch / ON or OFF ON : TRAC control switch ON -
ON : Accelerator pedal released
IDLE SW Main idle switch / ON or OFF OFF : Accelerator pedal -
depressed
ON : Brake pedal depressed
STOP LIGHT SW Stop light switch / ON or OFF -
OFF : Brake pedal released
ON : Parking brake applied
PKB SW Parking brake switch / ON or OFF -
OFF : Parking brake released
BEFORE : No ABS operation

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ABS operation (FR) / BEFORE or (FR)
ABS OPERT FR -
OPERATE OPERATE : During ABS
operation (FR)
BEFORE : No ABS operation (FL)
ABS operation (FL) / BEFORE or
ABS OPERT FL OPERATE : During ABS -
OPERATE
operation (FL)
BEFORE : No ABS operation
ABS operation (RR) / BEFORE or (RR)
ABS OPERT RR -
OPERATE OPERATE : During ABS
operation (RR)
BEFORE : No ABS operation
ABS operation (RL) / BEFORE or (RL)
ABS OPERT RL -
OPERATE OPERATE : During ABS
operation (RL)
Wheel speed sensor (FR)
Similar speed as indicated on
WHEEL SPD FR reading / min.: 0 km/h (0 MPH, Actual wheel speed
speed meter
max.: 326 km/h (202 MPH)
Wheel speed sensor (FL)
Similar speed as indicated on
WHEEL SPD FL reading / min.: 0 km/h (0 MPH, Actual wheel speed
speed meter
max.: 326 km/h (202 MPH)
Wheel speed sensor (RR)
Similar speed as indicated on
WHEEL SPD RR reading / min.: 0 km/h (0 MPH, Actual wheel speed
speed meter
max.: 326 km/h (202 MPH)
Wheel speed sensor (RL)
Similar speed as indicated on
WHEEL SPD RL reading / min.: 0 km/h (0 MPH, Actual wheel speed
speed meter
max.: 326 km/h (202 MPH)
Deceleration sensor 1 reading / Approximately 0 +- 0.13G at still Reading changes when vehicle is
DECELERAT SENS
min.: -1.869 G, max.: 1.869 G condition bounced
Deceleration sensor 2 reading / Approximately 0 +- 0.13G at still Reading changes when vehicle is
DECELERAT SENS2
min.: -1.869 G, max.: 1.869 G condition bounced
ECU power supply voltage / NORMAL: 9.5 V or over UNDER:
IG VOLTAGE -
UNDER / NORMAL Below 9.5 V
ABS solenoid (SFRR) / ON or
SFRR ON : Operate -
OFF
ABS solenoid (SFRH) / ON or
SFRH
OFF
ON : Operate -
BC
ABS solenoid (SFLR) / ON or
SFLR ON : Operate -
OFF
ABS solenoid (SFLH) / ON or
SFLH ON : Operate -
OFF
 BC–22 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

Measurement Item / Range

Item Normal Condition Diagnostic Note
(Display)
ABS solenoid (SRRR (SRR)) /
SRRR (SRR) ON : Operate -
ON or OFF
ABS solenoid (SRRH (SRH)) /
SRRH (SRH) ON : Operate -
ON or OFF
ABS solenoid (SRLR) / ON or
SRLR ON : Operate -
OFF
ABS solenoid (SRLH) / ON or
SRLH ON : Operate -
OFF
TRAC solenoid (SMF) / ON or
SMF (BA-SOL) ON : Operate -
OFF
TRAC solenoid (SMR) / ON or
SMR ON : Operate -
OFF
Release accelerator pedal:
Throttle position sensor/ Min.: 0 Approx. 0 deg.
THROTTLE -
deg, Max.: 125 deg Depress accelerator pedal:
Approx. 90 deg.
Engine Speed/ Min.: 0 rpm, Max.:
ENGINE SPD Actual engine speed -
6000 rpm
Maximum wheel speed sensor

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VEHICLE SPD reading / min.: 0 km/h (0 MPH), Actual vehicle speed Speed indicated on speedometer
max.: 326 km/h (202 MPH)
Yaw rate sensor/ Min.: -128 deg/ Min.: -128 deg/s
YAW RATE -
s, Max.: 128 deg/s Max.: 128 deg/s
Memorized zero value/ Min.: -128 Min.: -128 deg/s
YAW ZERO VALUE -
deg/s, Max.: 128 deg/s Max.: 128 deg/s
Steering sensor/ Min.: -1152 deg, Left turn: Increase
STEERING ANG -
Max.: 1150.875 deg Right turn: Decrease
Master cylinder pressure sensor When brake pedal is released : Reading increases when brake
MAS CYL PRS 1
1 reading / min.: 0 V, max.: 5 V 0.3 to 0.9 V pedal is depressed
NORMAL : Normal mode
TEST MODE Test mode / NORMAL or TEST -
TEST : During test mode
Number of DTC recorded / min.:
#CODES Min.: 0, max.: 39 -
0, max.: 255

*: 2WD
1. ACTIVE TEST
HINT:
Performing the ACTIVE TEST using the intelligent tester
allows the relay and actuator, etc. to operate without
removing any parts. Performing the ACTIVE TEST as
the first step of troubleshooting is one of the methods to
shorten labor time.
It is possible to display the DATA LIST during the
ACTIVE TEST.
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch to the ON position.
(c) According to the display on the tester, perform the
"ACTIVE TEST".
HINT:
Ignition switch must be turned to the ON position to
proceed to the Active Test using the intelligent
BC tester.
Item Vehicle Condition / Test Details Diagnostic Note
Operation of solenoid (clicking
SFRR Turns ABS solenoid (SFRR) ON / OFF
sound) can be heard
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–23

Item Vehicle Condition / Test Details Diagnostic Note

Operation of solenoid (clicking
SFRH Turns ABS solenoid (SFRH) ON / OFF
sound) can be heard
Operation of solenoid (clicking
SFLR Turns ABS solenoid (SFLR) ON / OFF
sound) can be heard
Operation of solenoid (clicking
SFLH Turns ABS solenoid (SFLH) ON / OFF
sound) can be heard
Operation of solenoid (clicking
SRRR Turns ABS solenoid (SRRR) ON / OFF
sound) can be heard
Operation of solenoid (clicking
SRRH Turns ABS solenoid (SRRH) ON / OFF
sound) can be heard
Operation of solenoid (clicking
SRLR Turns ABS solenoid (SRLR) ON / OFF
sound) can be heard
Operation of solenoid (clicking
SRLH Turns ABS solenoid (SRLH) ON / OFF
sound) can be heard
Operation of solenoid (clicking
SMF (BA-SOL) Turns TRAC solenoid SMF (BA-SOL) ON / OFF
sound) can be heard
Operation of solenoid (clicking
SMR Turns TRAC solenoid SMR ON / OFF
sound) can be heard
Operation of solenoid (clicking
SOL RELAY Turns ABS solenoid relay ON / OFF
sound) can be heard

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Operation of solenoid (clicking
ABS MOT RELAY Turns ABS motor relay ON / OFF
sound) can be heard
ABS WARN LIGHT Turns ABS warning light ON / OFF Observe combination meter
VSC WARN LIGHT Turns VSC warning light ON / OFF Observe combination meter
VSC / TRAC OFF IND* Turns VSC / TRAC OFF indicator ON / OFF Observe combination meter
SLIP INDI LIGHT Turns SLIP indicator light ON / OFF Observe combination meter
BRAKE WARN LIGHT Turns BRAKE warning light ON / OFF Observe combination meter
VSC / BR WARN BUZ Turns VSC / BRAKE warning buzzer ON / OFF Buzzer can be heard

*: 2WD

BC
 BC–24 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

DIAGNOSTIC TROUBLE CODE CHART

HINT:
If a malfunction code is displayed during the DTC check,
check the circuit indicated by the DTC. For details of each
code, turn to the page for the respective "DTC No." in the
DTC chart.
VEHICLE STABILITY CONTROL SYSTEM
DTC No. Detection Item Trouble Area See page

C0200/31* 1 Right Front Wheel Speed Sensor 1. Right front speed sensor BC-24
Signal 2. Each speed sensor circuit
3. Sensor rotor
4. Sensor installation

C0205/32*1 Front Speed Sensor LH Circuit 1. Left front speed sensor BC-24
2. Each speed sensor circuit
3. Sensor rotor
4. Sensor installation

C0210/33*1 Right Rear Wheel Speed Sensor 1. Right rear speed sensor BC-30
Signal 2. Each speed sensor circuit
3. Sensor rotor
4. Sensor installation

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C0215/34*1 Rear Speed Sensor LH Circuit 1. Left rear speed sensor BC-30
2. Each speed sensor circuit
3. Sensor rotor
4. Sensor installation
C0226/21 SFR Solenoid Circuit 1. ABS & TRAC actuator BC-37
2. SFRH or SFRR circuit
C0236/22 SFL Solenoid Circuit 1. ABS & TRAC actuator BC-37
2. SFLH or SFLR circuit
C0246/23 SRR Solenoid Circuit 1. ABS & TRAC actuator BC-37
2. SRRH or SRRR circuit
C0256/24 SRL Solenoid Circuit 1. ABS & TRAC actuator BC-37
2. SRLH or SRLR circuit

C0273/13*1 Open or Short Circuit in ABS 1. ABS No.2 fuse BC-39

Motor Relay Circuit 2. ABS MTR relay
3. ABS MTR relay circuit
4. J/B No.2
C0274/14 Short to B+ in ABS Motor Relay 1. ABS No.2 fuse BC-39
Circuit 2. ABS MTR relay
3. ABS MTR relay circuit
4. J/B No.2
C0278/11 Open or Short Circuit in ABS 1. ABS No.1 fuse BC-45
Solenoid Relay Circuit 2. ABS SOL relay
3. ABS SOL relay circuit
4. ABS & TRAC actuator
C0279/12 Short to B+ in ABS Solenoid 1. ABS No.1 fuse BC-45
Relay Circuit 2. ABS SOL relay
3. ABS SOL relay circuit
4. ABS & TRAC actuator
C1201/51 Engine Control System 1. Engine control BC-49
Malfunction
C1203/53 ECM Communication Circuit 1. TRC+ or TRC- circuit BC-50
Malfunction 2. ENG+ or ENG- circuit
3. ECM
C1210/36 Zero Point Calibration of Yaw 1. Yaw rate sensor (Deceleration BC-52
Rate Sensor Undone sensor)

BC C1223/43 ABS Control System Malfunction

2. Zero point calibration undone
1. ABS control system BC-55
C1224/44 NE Signal Circuit 1. NEO circuit BC-56
2. ECM
3. Skid control ECU
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–25

DTC No. Detection Item Trouble Area See page

C1225/25 SM Solenoid Circuit 1. SMF or SMR circuit BC-37
2. ABS & TRAC actuator
C1231/31 Steering Angle Sensor Circuit 1. Steering angle sensor BC-59
Malfunction 2. Steering angle sensor circuit
3. +B circuit
C1232/32 Stuck in Deceleration Sensor 1. Yaw rate sensor (Deceleration BC-62
sensor)
C1234/34 Yaw Rate Sensor Malfunction 1. Yaw rate sensor (Deceleration BC-62
sensor)
C1235/35 Foreign Object is Attached on Tip 1. Right front speed sensor BC-24
of Front Speed Sensor RH 2. Sensor installation
C1236/36 Foreign Object is Attached on Tip 1. Left front speed sensor BC-24
of Front Speed Sensor LH 2. Sensor installation
C1238/38 Foreign Object is Attached on Tip 1. Right rear speed sensor BC-30
of Rear Speed Sensor RH 2. Sensor installation
C1239/39 Foreign Object is Attached on Tip 1. Left rear speed sensor BC-30
of Rear Speed Sensor LH 2. Sensor installation
C1241/41 Low Battery Positive Voltage 1. Battery BC-65
2. Charging system
3. Power source circuit

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C1243/43*1 Acceleration Sensor Stuck 1. Yaw rate sensor (Deceleration BC-62
Malfunction sensor)
2. Yaw rate sensor circuit
(Deceleration sensor circuit)
C1244/44 Open or Short in Deceleration 1. Yaw rate sensor (Deceleration BC-62
Sensor Circuit sensor)
2. Yaw rate sensor circuit
(Deceleration sensor circuit)

C1245/45*1 Acceleration Sensor Output 1. Yaw rate sensor (Deceleration BC-62

Malfunction sensor)
2. Yaw rate sensor circuit
(Deceleration sensor circuit)

C1246/46*2 Master Cylinder Pressure Sensor 1. Master cylinder pressure BC-68

Malfunction sensor
2. Master cylinder pressure
sensor circuit
C1249/49 Open in Stop Light Switch Circuit 1. Stop light assembly BC-70
2. Stop light switch circuit

C1251/51*1 Open in Pump Motor Circuit 1. ABS & TRAC actuator BC-74
2. ABS & TRAC actuator circuit
C1267/67 Brake Pedal Load Sensing 1. Brake pedal load sensing BC-76
Switch switch
2. Brake pedal load sensing
switch circuit
C1336/39 Zero Point Calibration of 1. Yaw rate sensor (Deceleration BC-52
Deceleration Sensor Undone sensor)
2. Zero point calibration not done
C1361/91 Short Circuit in ABS Motor Fail 1. ABS No.21 fuse BC-39
Safe Relay Circuit 2. ABS cut relay
3. ABS cut relay circuit
4. J/B No.2
C1381/97 Yaw Rate and / or Acceleration 1. Yaw rate sensor BC-62
Sensor Power Supply Voltage 2. Yaw rate sensor power source
Malfunction circuit

*1, *2:
Even after the trouble areas are repaired, the ABS warning BC
light will not go off unless the following operations are
performed.
• *1:
 BC–26 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

(a)Drive the vehicle at 12 mph (20 km/h) for 30 seconds or

more and check that the ABS warning light goes off.
(b)Clear the DTC.
• *2:
(a)Keep the vehicle in a stationary condition for 5 seconds
or more and depress the brake pedal lightly 2 or 3
times.
(b)Drive the vehicle at a speed of 31 mph (50 km/h). Then
depress the brake pedal strongly for about 3 seconds.
(c) Repeat the above operation 3 times or more and check
that the ABS warning light goes off.
(d)Clear the DTC.
HINT:
• In some cases, the intelligent tester cannot be used
when ABS warning light remains on.
• In some cases, the intelligent tester cannot be used
when the VSC warning light remains on.
• If any of U0121/94, U0123/62, U0124/95 and U0126/
63 are displayed, inspect the CAN communication

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system.

BC
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–27

DTC C0200/31 Right Front Wheel Speed Sensor Signal

DTC C0205/32 Front Speed Sensor LH Circuit

Foreign Object is Attached on Tip of Front

DTC C1235/35
Speed Sensor RH

Foreign Object is Attached on Tip of Front

DTC C1236/36
Speed Sensor LH
DESCRIPTION
The speed sensor detects wheel speed and sends the appropriate signals to the ECU. These signals are
used to control the ABS control system. The front and rear rotors have 48 serrations each.

Speed Sensor

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Rotor N S Magnet
Coil

To ECU

Low Speed
High Speed
+V

-V
F000010E12

When the rotors rotate, the magnetic field emitted by the permanent magnet in the speed sensor
generates AC voltage. Since the frequency of this AC voltage changes in direct proportion to the speed of
the rotor, the frequency is used by the ECU to detect the speed of each wheel.
DTC No. DTC Detection Condition Trouble Area
1. All the following conditions continues for at least 1
second.
– Vehicle speed is more than 6 mph (10 km/h). • Right front and left front speed sensor
C0200/31 – Open or short in vehicle speed sensor signal • Each speed sensor circuit
C0205/32 circuit. • Sensor rotor
2. Momentary interruption of the sensor signal of • Sensor installation
faulty wheel has occurred 7 times or more.
3. Sensor signal circuit is open for 0.5 seconds.
All the following conditions for at least 5 seconds.
C1235/35 • Right front and left front speed sensor
• Vehicle speed is more than 12 mph (20 km/h).
C1236/36 • Sensor installation
• Vehicle speed sensor signal receives interference.

HINT:
• DTC C0200/31 and C1235/35 are for the right front speed sensor.
• DTC C0205/32 and C1236/36 are for the left front speed sensor.
BC
 BC–28 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

WIRING DIAGRAM
Skid Control ECU with
Actuator

18
S2 S1 FL+
2
ABS Speed Sensor
Front LH
4
1
S1 FL-

3
S3 S1 FR+
2
ABS Speed Sensor
Front RH
17
1
S1 FR-

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F040884E08

HINT:
Start the inspection from step 1 when using the intelligent tester and start from step 3 when not using the
intelligent tester.

1 READ VALUE OF INTELLIGENT TESTER (FRONT SPEED SENSOR)

(a) Connect the intelligent tester to the DLC3.

(b) Start the engine.
(c) Select the DATA LIST mode on the intelligent tester.
Item Measurement Item / Range (Display) Normal Condition
Wheel speed sensor (FR) reading / min.: 0
WHEEL SPD FR Actual wheel speed
km/h (0 MPH, max.: 326 km/h (202 MPH)
Wheel speed sensor (FL) reading / min.: 0
WHEEL SPD FL Actual wheel speed
km/h (0 MPH, max.: 326 km/h (202 MPH)

(d) Check that there is no difference between the speed

value output from the speed sensor displayed on the
intelligent tester and the speed value displayed on the
speedometer when driving the vehicle.
OK:
There is almost no difference from the displayed
speed value.
HINT:
There is tolerance of +- 10 % in the speedometer
indication.
BC NG Go to step 3

OK
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–29

2 INSPECT SPEED SENSOR AND SENSOR ROTOR SERRATIONS

(a) INSPECTION USING OSCILLOSCOPE

(1) Connect the oscilloscope to terminal FR+ - FR- or
FL+ - FL- of the skid control ECU.
(2) Drive the vehicle at about 19 mph (30 km/h), and
Normal Signal Waveform check the signal waveform.
OK:
A waveform as shown in a figure should be
output.
GND
HINT:
• As the vehicle speed (wheel revolution speed)
increases, a cycle of the waveform narrows and
2 m/s / Division the fluctuation in the output voltage becomes
1 V/ Division W004200E17 greater.
• When noise is identified in the waveform on the
oscilloscope, error signals are generated due to
the speed sensor rotor's scratches, looseness or

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foreign matter attached to it.
NOTICE:
When replacing the ABS actuator assembly,
perform zero point calibration (See page BC-5).
NG Go to step 6

OK

REPLACE ABS AND TRACTION ACTUATOR

3 INSPECT FRONT SPEED SENSOR

(a) Make sure that there is no looseness at the connectors'

locking part and connecting part of connector.
(b) Disconnect the speed sensor connector.
(c) Measure the resistance according to the value(s) in the
table below.
Resistance:
LH
Tester Connection Specified Condition
S2-2 (FL+) - S2-1 (FL-) 0.6 to 2.5 kΩ

S2 S3 RH
Front Speed Sensor Tester Connection Specified Condition
F046886E01
S3-2 (FR+) - S3-1 (FR-) 0.6 to 2.5 kΩ

(d) Measure the resistance according to the value(s) in the

table below.
Resistance: BC
LH
Tester Connection Specified Condition
S2-2 (FL+) - Body ground 10 kΩ or higher
 BC–30 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

Tester Connection Specified Condition

S2-1 (FL-) - Body ground 10 kΩ or higher

RH
Tester Connection Specified Condition
S3-2 (FR+) - Body ground 10 kΩ or higher
S3-1 (FR-) - Body ground 10 kΩ or higher

NOTICE:
Check the speed sensor signal after replacement
(See page BC-16).
NG REPLACE FRONT SPEED SENSOR

OK

4 CHECK HARNESS AND CONNECTOR (FRONT SPEED SENSOR - SKID CONTROL ECU)

(a) Disconnect the skid control ECU connector and the front

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speed sensor connector.
(b) Measure the resistance according to the value(s) in the
Skid Control ECU (harness side connector)
table below.
Resistance:
S1 FR+ FL-
LH
Tester Connection Specified Condition
S1-18 (FL+) - S2-2 (FL+) Below 1 Ω
S1-4 (FL-) - S2-1 (FL-) Below 1 Ω
FR- FL+
Front Speed Sensor (harness side connector) RH
Tester Connection Specified Condition
S2 S3 S1-3 (FL+) - S3-2 (FL+) Below 1 Ω
S1-17 (FL-) - S3-1 (FL-) Below 1 Ω

(c) Measure the resistance according to the value(s) in the

FL+ FL- FR+ FR- table below.
G026177E02
Resistance:
LH
Tester Connection Specified Condition
S1-18 (FL+) - Body ground 10 kΩ or higher
S1-4 (FL-) - Body ground 10 kΩ or higher

RH
Tester Connection Specified Condition
S1-3 (FL+) - Body ground 10 kΩ or higher
S1-17 (FL-) - Body ground 10 kΩ or higher

NG REPAIR OR REPLACE HARNESS OR

CONNECTOR

BC OK
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–31

5 INSPECT SPEED SENSOR AND SENSOR ROTOR SERRATIONS

(a) INSPECTION USING OSCILLOSCOPE

(1) Connect the oscilloscope to terminal FR+ - FR- or
FL+ - FL- of the skid control ECU.
(2) Drive the vehicle at about 19 mph (30 km/h), and
Normal Signal Waveform check the signal waveform.
OK:
A waveform as shown in a figure should be
output.
GND
HINT:
• As the vehicle speed (Wheel revolution speed)
increases, a cycle of the waveform narrows and
2 m/s / Division the fluctuation in the output voltage becomes
1 V/ Division W004200E18 greater.
• When noise is identified in the waveform on the
oscilloscope, error signals are generated due to
the speed sensor rotor's scratches, looseness or

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foreign matter attached to it.
NOTICE:
When replacing the ABS actuator assembly,
perform zero point calibration (See page BC-5).
NG Go to step 6

OK

REPLACE ABS AND TRACTION ACTUATOR

6 INSPECT FRONT SPEED SENSOR INSTALLATION

(a) Check the speed sensor installation.

Speed Sensor
OK:
8.0 N*m (82 kgf*cm, The installation bolt is tightened properly. There is
71 in.*lbf)
no clearance between the sensor and the front
steering knuckle.
Torque: 8.0 N*m (82 kgf*cm, 71 in.*lbf)
NOTICE:
No clearance Check the speed sensor signal after the replacement
OK NG (See page BC-16).
BR03795E45
NG REPLACE FRONT SPEED SENSOR

OK

7 INSPECT SPEED SENSOR TIP

(a) Remove the front speed sensor (See page BC-113).

BC
(b) Check the sensor tip.
OK:
No scratches or foreign matter on the sensor tip.
 BC–32 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

NOTICE:
Check the speed sensor signal after the replacement
(See page BC-16).
NG CLEAN OR REPLACE SPEED SENSOR

OK

8 INSPECT SPEED SENSOR ROTOR

(a) Remove the front speed sensor rotor.

(b) Check the sensor rotor serrations.
OK:
No scratches, missing teeth or foreign matter on
Speed Sensor Rotor
the rotors.
HINT:
If there is foreign matter in the rotor, remove it and check
the output waveform after reassembly.
NOTICE:

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Check the speed sensor signal after the replacement
R000948E06 (See page BC-16).
NOTICE:
When replacing the ABS & TRACTION actuator
assembly, perform zero point calibration (See page BC-
5).
NG REPLACE FRONT DRIVE SHAFT ASSEMBLY

OK

REPLACE ABS AND TRACTION ACTUATOR

BC
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–33

DTC C0210/33 Right Rear Wheel Speed Sensor Signal

DTC C0215/34 Rear Speed Sensor LH Circuit

Foreign Object is Attached on Tip of Rear

DTC C1238/38
Speed Sensor RH

Foreign Object is Attached on Tip of Rear

DTC C1239/39
Speed Sensor LH
DESCRIPTION
Refer to DTC C0200/31, C0205/32, C1235/35, C1236/36 (See page BC-24).
DTC No. DTC Detection Condition Trouble Area
1. All the following conditions continues for at least 1
second.
– Vehicle speed is more than 6 mph (10 km/h). • Right rear and left rear speed sensor

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C0210/33 – Open or short in vehicle speed sensor signal • Each speed sensor circuit
C0215/34 circuit. • Sensor rotor
2. Momentary interruption of the sensor signal of • Sensor installation
faulty wheel has occurred 7 times or more.
3. Sensor signal circuit is open for 0.5 seconds.
All the following conditions for at least 5 seconds.
C1238/38 • Right rear and left rear speed sensor
• Vehicle speed is more than 12 mph (20 km/h).
C1239/39 • Sensor installation
• Vehicle speed sensor signal receives interference.

HINT:
• DTC C0210/33 and C1238/38 are for the right rear speed sensor.
• DTC C0215/34 and C1239/39 are for the left rear speed sensor.

WIRING DIAGRAM

Skid Control ECU

with Actuator

7 4 19
1 2 LG Y BR
IS1 IO1 S1 RR-
S26
ABS Speed Sensor
Rear RH 8 B 3 5
G IS1 L-B
IO1 S1 RR+

2 L 5 6
1 2 GR W
ID1 IO1 S1 RL-
S25
ABS Speed Sensor
Rear LH 1 R 6 20
Y O
ID1 IO1 S1 RL+

BC
G026387E01
 BC–34 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

HINT:
Start the inspection from step 1 when using the intelligent tester and start from step 3 when not using the
intelligent tester.

1 READ VALUE OF INTELLIGENT TESTER (REAR SPEED SENSOR)

(a) Connect the intelligent tester to the DLC3.

(b) Start the engine.
(c) Select the DATA LIST mode on the intelligent tester.
Item Measurement Item / Range (Display) Normal Condition
Wheel speed sensor (RL) reading / min.: 0
WHEEL SPD RL Actual wheel speed
km/h (0 MPH, max.: 326 km/h (202 MPH)
Wheel speed sensor (RR) reading / min.: 0
WHEEL SPD RR Actual wheel speed
km/h (0 MPH, max.: 326 km/h (202 MPH)

(d) Check that there is no difference between the speed

value output from the speed sensor displayed by the
intelligent tester and the speed value displayed on the
speedometer when driving the vehicle.

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OK:
There is almost no difference in the displayed
speed value.
HINT:
There is tolerance of +- 10 % in the speedometer
indication.
NG Go to step 3

OK

2 INSPECT SPEED SENSOR AND SENSOR ROTOR SERRATIONS

(a) INSPECTION USING OSCILLOSCOPE:

(1) Connect the oscilloscope to terminals RR+ - RR- or
RL+ - RL- of the skid control ECU.
(2) Drive the vehicle at approximately 19 mph (30 km/
Normal Signal Waveform h), and check the signal waveform.
OK:
A waveform as shown in a figure should be
output.
GND
HINT:
• As vehicle speed (wheel revolution speed) in
creases, a cycle of the waveform narrows and
2 m/s / Division the fluctuation in the output voltage becomes
1 V/ Division W004200E19 greater.
• hen noise is identified in the waveform on the
oscilloscope, error signals are generated due to
the speed sensor rotor's scratches, looseness or
foreign matter attached to it.
NOTICE:
BC When replacing the ABS actuator assembly,
perform zero point calibration (See page BC-5).
NG Go to step 6
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–35

OK

REPLACE ABS AND TRACTION ACTUATOR

3 INSPECT REAR SPEED SENSOR

(a) 2WD
(1) Disconnect the skid control sensor connector.
(2) Measure the resistance according to the value(s) in
Rear Speed Sensor
the table below.
Resistance:
LH
Tester Connection Specified Condition
1
(S25-1) - (S25-2) 0.9 to 2.1 kΩ
2
S25 S26
RH

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Tester Connection Specified Condition
LH RH F041836E16
(S26-1) - (S26-2) 0.9 to 2.1 kΩ

(3) Measure the resistance according to the value(s) in

the table below.
Resistance:
LH
Tester Connection Specified Condition
(S25-1) - Body ground 10 kΩ or higher
(S25-2) - Body ground 10 kΩ or higher

RH
Tester Connection Specified Condition
(S26-1) - Body ground 10 kΩ or higher
(S26-2) - Body ground 10 kΩ or higher

NOTICE:
Check the speed sensor signal after
replacement (See page BC-16).
(b) 4WD
(1) Remove the seat cushion seatback.
(2) Disconnect the speed sensor connector S25 or S26.
(3) Measure the resistance according to the value(s) in
4WD: Speed Sensor S25 S26 the table below.
Resistance:
2 1 2 1 LH
Tester Connection Specified Condition
S25-1 (RL+) - S25-2 (RL-) 0.9 to 1.3 Ω

RH

F013045E06
Tester Connection
S26-1 (RR+) - S26-2 (RR-)
Specified Condition
0.9 to 1.3 Ω
BC
(4) Measure the resistance according to the value(s) in
the table below
 BC–36 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

Resistance:
LH
Tester Connection Specified Condition
S25-1 (RL+) - Body ground 1 MΩ or higher
S25-2 (RL-) - Body ground 1 MΩ or higher

RH
Tester Connection Specified Condition
S26-1 (RR+) - Body ground 1 MΩ or higher
S26-2 (RR-) - Body ground 1 MΩ or higher

NOTICE:
Check the speed sensor signal after the
replacement. (See page BC-16)
NG REPLACE REAR SPEED SENSOR

OK

cardiagn.com
4 CHECK HARNESS AND CONNECTOR (REAR SPEED SENSOR - SKID CONTROL ECU)

(a) Disconnect the skid control ECU connector and the skid
control sensor connector.
(b) Measure the resistance according to the value(s) in the
Skid Control ECU (harness side connector)
table below.
Resistance:
S1 RR+ RL-
LH
Tester Connection Specified Condition
S1-20 (RL+) - S25-1 (RL+) Below 1 Ω
S1-6 (RL-) - S25-2 (RL-) Below 1 Ω
RR- RL+
Skid Control Sensor (harness side connector)
RH
Tester Connection Specified Condition
S25 S26
S1-5 (RR+) - S26-1 (RR+) Below 1 Ω
S1-6 (RR-) - S26-2 (RR-) Below 1 Ω

(c) Measure the resistance according to the value(s) in the

RL- RL+ RR- RR+
G026241E02
table below.
Resistance:
LH
Tester Connection Specified Condition
S1-20 (RL+) - Body ground 10 kΩ or higher
S1-6 (RL-) - Body ground 10 kΩ or higher

RH
Tester Connection Specified Condition
S1-5 (RR+) - Body ground 10 kΩ or higher
S1-19 (RR-) - Body ground 10 kΩ or higher

BC NG REPAIR OR REPLACE HARNESS OR

CONNECTOR
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–37

OK

5 INSPECT SPEED SENSOR AND SENSOR ROTOR SERRATIONS

(a) INSPECTION USING OSCILLOSCOPE:

(1) Connect the oscilloscope to terminals RR+ - RR- or
RL+ - RL- of the skid control ECU.
(2) Drive the vehicle at approximately 19 mph (30 km/
Normal Signal Waveform h), and check the signal waveform.
OK:
A waveform as shown in a figure should be
output.
GND
HINT:
• As the vehicle speed (wheel revolution speed)
increases, a cycle of the waveform narrows and
2 m/s / Division the fluctuation in the output voltage becomes
1 V/ Division W004200E20 greater.
• When noise is identified in the waveform on the

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oscilloscope, error signals are generated due to
the speed sensor rotor's scratches, looseness or
foreign matter attached to it.
NOTICE:
When replacing the ABS actuator assembly,
perform zero point calibration (See page BC-5).
NG Go to step 6

OK

REPLACE ABS AND TRACTION ACTUATOR

6 INSPECT REAR SPEED SENSOR INSTALLATION

(a) 2WD
2WD: Skid Control Sensor (1) Check the sensor installation.
OK:
There is no clearance between the sensor and
rear axle carrier.

OK NG
F010178E14

BC
 BC–38 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

(b) 4WD
4WD: Speed Sensor (1) Check the sensor installation.
OK:
There is no clearance between the sensor and
rear axle carrier.
The installation bolt is tightened properly.
Torque: 8.0 N*m (82 kgf*cm, 71 in.*lbf)
NOTICE:
OK NG Check the speed sensor signal after the replacement
BR03795E46 (See page BC-16).
NG REPLACE REAR SPEED SENSOR

OK

7 INSPECT SENSOR ROTOR

(a) Check the sensor rotor serrations.

Sensor Rotor OK:

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No scratches, missing teeth or foreign objects.

Sensor Rotor

F042859E02

Result
Result See Procedure
OK A
NG (for 2WD) B
NG (for 4WD) C

NOTICE:
Check the speed sensor signal after the replacement
(See page BC-16).
B REPLACE REAR AXLE HUB AND BEARING
BC ASSEMBLY

C REPLACE REAR DRIVE SHAFT ASSEMBLY

 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–39

8 INSPECT REAR SPEED SENSOR TIP

(a) Remove the rear speed sensor (See page BC-116).

(b) Check the sensor tip.
OK:
No scratches or foreign matter on the sensor tip.
NOTICE:
Check the speed sensor signal after the replacement
(See page BC-16).
NOTICE:
When replacing the ABS actuator assembly, perform
zero point calibration (See page BC-5).
NG CLEAN OR REPLACE SPEED SENSOR

OK

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BC
 BC–40 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

DTC C0226/21 SFR Solenoid Circuit

DTC C0236/22 SFL Solenoid Circuit

DTC C0246/23 SRR Solenoid Circuit

DTC C0256/24 SRL Solenoid Circuit

DTC C1225/25 SM Solenoid Circuit

DESCRIPTION
This solenoid goes on when signals are received from the ECU and controls the pressure acting on the
wheel cylinders to control the braking force.
DTC No. DTC Detection Condition Trouble Area
Open or short circuit in front right solenoid circuit • ABS & TRAC actuator
C0226/21
(SFRR or SFRH) continues for 0.05 sec. or more. • Each solenoid circuit

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Open or short circuit in front left solenoid circuit (SFLR • ABS & TRAC actuator
C0236/22
or SFLH) continues for 0.05 sec. or more. • Each solenoid circuit
Open or short circuit in rear right solenoid circuit (SRRR • ABS & TRAC actuator
C0246/23
or SRRH) continues for 0.05 sec. or more. • Each solenoid circuit
Open or short circuit in rear left solenoid circuit (SRLR • ABS & TRAC actuator
C0256/24
or SRLH) continues for 0.05 sec. or more. • Each solenoid circuit
When any of the following (1 to 5) is detected:
1. All the following conditions continues for at least
0.05 seconds.
– When switching solenoid (SM1 or SM2) outputs
ON signal.
– Over current.
2. All the following conditions continues for at least
0.05 seconds.
– When switching solenoid (SM1 or SM2) outputs
OFF signal.
– Open circuit.
3. All the following conditions continue for at least
0.05 seconds.
– When switching solenoid (SM1 or SM2) outputs
OFF signal.
– Output current monitor is more than 0.15 A. • ABS & TRAC actuator
C1225/25
4. All the following conditions continues for at least • Each solenoid circuit
0.05 seconds.
– When switching solenoid (SM1 or SM2) outputs
ON signal.
– Output current is more than 0.348 A.
– Difference between current monitor and target
value exceeds 2, continues for between 0.1
sec. and 0.15 sec.
5. All the following conditions continue for at least 0.2
seconds.
– When switching solenoid (SM1 or SM2) outputs
ON signal.
– Output current is more than 0.348 A.
– Switching solenoid (SM1 or SM2) duty ratio:
(1) More than 2.08
(2) Less than 0.48
BC
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–41

WIRING DIAGRAM

Skid Control ECU

FL Block with Actuator
1 ALT ABS No. 1 L 31
W 1
7A 7 S1 +BS
1 2 2
W-L 1
S1 GND2
FL MAIN A
32
J6 J1 W-B
S1 GND1
J/C J/C A
Battery
IH EA

G026388E01

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1 RECONFIRM DTC

HINT:
This code is detected when a problem is determined in the
ABS & TRACTION actuator assembly.
The solenoid circuit is in the ABS & TRACTION actuator
assembly.
Therefore, solenoid circuit inspection and solenoid unit
inspection cannot be performed. Be sure to check if the DTC
code is output before replacing the ABS & TRACTION
actuator assembly.
(a) Clear the DTCs (See page BC-21).
(b) Turn the ignition switch to the ON position.
(c) Are the same DTCs recorded?
Result
Result Proceed to
DTC is output A
DTC is not output B

NOTICE:
When replacing the ABS & TRACTION actuator
assembly, perform zero point calibration (See page
BC-5).
B PROCEED TO NEXT CIRCUIT INSPECTION
SHOWN IN PROBLEM SYMPTOMS TABLE

REPLACE ABS AND TRACTION ACTUATOR BC

 BC–42 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

Open or Short Circuit in ABS Motor Relay Cir-

DTC C0273/13
cuit

DTC C0274/14 Short to B+ in ABS Motor Relay Circuit

Short Circuit in ABS Motor Fail Safe Relay Cir-

DTC C1361/91
cuit
DESCRIPTION
• The ABS motor relays consist of the 2 semiconductor relays and are included in the J/B No. 2.
• The ABS motor relay 1 is turned on after turning the ignition switch to the ON position. If the DTCs in
the ABS pump motor circuit are memorized, the ABS motor relay 1cuts off the power supply to the ABS
motor relay 2 and performs the fail safe.
• While any of the ABS, BA, TRAC and VSC is operating, the skid control ECU (included in the actuator)
turns the ABS motor relay 2 on to operate the actuator pump motor.
• If the voltage applied to the ABS motor relays (+BM) drops below the condition that detects the DTCs
due to the shortage of the battery or alternator output, the DTCs may be memorized.

cardiagn.com
DTC No. DTC Detection Condition Trouble Area
• With IG1 terminal voltage at 9.5 to 17.2 V, during
initial check, ABS control, TRAC control, VSC
control and BA control, when ABS motor relay is
turned on and the relay contact is "OFF" for 0.12
C0273/13
sec. or more.
• With IG1 terminal voltage at 9.5 V or less, when • ABS No. 2 fuse
ABS motor relay is turned on and the relay contact • ABS MTR relay
is not "ON" for 0.12 sec. or more. • ABS MTR relay circuit
• J/B No. 2
when ABS motor relay is turned off, contact is "ON" for
C0274/14
4 sec. or more.
Immediately after IG1 terminal is turned on, when ABS
C1361/91 motor fail safe relay is tuned of and the relay contact is
"ON" for 4 sec. or more.

BC
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–43

WIRING DIAGRAM

Skid Control ECU

with Actuator
B-W 2
S1 BM
Y 45
S1 R+
J/B No. 2
5 5 L 15
2G 2G S1 MR
1 VSC MTR
2D No. 2
Relay

6 14
R
2G S1 MRF
3
R
2F
1 1
VSC MTR W-B W-L
No. 1 2F S1 GND2
Relay 13 W-B 32
W-B

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2H S1 GND1

FL Block
ABS No. 2 ALT 1
7 1 7A
2 2 1

W J6 J5 J6 J1
A J/C A J/C A J/C A J/C
FL MAIN

Battery
IH EG IH EA

G026400E01

1 INSPECT FUSE

(a) Remove the ABS No. 2 fuse from the FL block.

BC
 BC–44 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

(b) Measure the resistance according to the value(s) in the

FL Block table below.
Resistance
Tester Connection Specified Condition
ABS No. 2 fuse Below 1 Ω

NG REPLACE FUSE

ABS No. 2
G026178E01

OK

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2 CHECK ENGINE ROOM JUNCTION BLOCK

(a) With the ignition switch OFF, remove the J/B No. 2 with
the wire harness still connected.
(b) Measure the voltage according to the value(s) in the
J/B No. 2 table below.
Voltage
Tester Connection Specified Condition
2F-3 (+BM) - Body ground 10 to 14 V

NG REPAIR OR REPLACE HARNESS OR

CONNECTOR

2F

+BM
G026181E01

OK

3 CHECK ENGINE ROOM JUNCTION BLOCK

(a) With the ignition switch off, remove the J/B No. 2 with the
wire harness still connected.

BC
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–45

(b) Measure the resistance according to the value(s) in the

J/B No. 2 table below.
Resistance
2H Tester Connection Specified Condition
2F-1 (PGND) - Body ground
SGND Below 1 Ω
2H-13 (SGND) - Body ground

NG REPAIR OR REPLACE HARNESS OR

CONNECTOR
2F

PGND
G026278E01

OK

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4 CHECK WIRE HARNESS

(a) With the ignition switch OFF, disconnect the skid control
ECU connector S1 and the J/B No. 2 connectors.
(b) Measure the resistance according to the value(s) in the
J/B No. 2 table below.
R+ Resistance
2G MRF
Tester Connection Specified Condition

2D S1-45 (R+) - 2G-5 (R+)

MR S1-14 (MRF) - 2G-6 (MRF)
Below 1 Ω
S1-15 (MR) - 2G-7 (R+)
S1-2 (BM) - 2D-1 (BM2)
BM2
(c) Measure the resistance according to the value(s) in the
table below.
Resistance
S1
Skid Control ECU Tester Connection Specified Condition
(harness side connector) MRF MR
S1-45 (R+) - Body ground
S1-14 (MRF) - Body ground
10 kΩ or higher
S1-15 (MR) - Body ground
S1-2 (BM) - Body ground

BM R+
NG REPAIR OR REPLACE HARNESS OR
G026435E01 CONNECTOR

OK

5 CHECK JUNCTION BLOCK NO.2

(a) With the ignition switch off, remove the J/B No. 2. BC
 BC–46 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

(b) Connect the battery positive lead to terminal +BM of the

2H SGND J/B No. 2 and the negative lead to terminal SGND,
PGND, MRF and MR.
R+
MRF Battery lead Connection Specified Condition
2G
MR 2F-3 (+BM) Positive
2H-13 (SGND) Negative

2D 2F-1 (PGND) Negative

PGND 2G-6 (MRF) Negative
2F 2G-7 (MR) Negative
+BM
(c) Measure the voltage according to the value(s) in the
table below.
J/B No. 2 BM2 Voltage
Tester Connection Specified Condition
G026179E01
2D-1 (BM2) - Battery negative
0V
terminal

(d) Connect the battery positive lead to terminal R+ of the J/

B No. 2 in addition to terminal +BM.

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Battery lead Connection Specified Condition
2G-5 (R+) Positive

(e) Measure the voltage according to the value(s) in the

table below.
Voltage
Tester Connection Specified Condition
2D-1 (BM2) - Battery negative
10 to 14 V
terminal

NG REPLACE JUNCTION BLOCK NO.2

OK

6 RECONFIRM DTC

(a) Clear the DTCs.

(b) Drive the vehicle at a speed of 6 km/h (4 mph) or more.
(c) Check if the same DTCs are recorded. (See page BC-
21)
Result
Result Proceed to
DTC is output A
DTC is not output B

HINT:
• The skid control ECU inspects the motor relay circuit
when the stop light switch is turned off and the vehicle
is running at a speed of 6 km/h (4mph) or more.
BC • It is suspect that the DTCs output was caused by the
poor connection of the connector terminal.
B END
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–47

REPLACE JUNCTION BLOCK NO.2

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BC
 BC–48 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

Open or Short Circuit in ABS Solenoid Relay

DTC C0278/11
Circuit

DTC C0279/12 Short to B+ in ABS Solenoid Relay Circuit

DESCRIPTION
The ABS solenoid relay is built in the ABS & TRACTION Actuator assembly. This relay supplies power to
each ABS solenoid. If the initial check is OK, after the ignition switch is turned to the ON position, the relay
goes on.
DTC No. DTC Detection Condition Trouble Area
When any of the following (1 to 2) is detected:
All the following conditions continue for at least 0.2
seconds.
ABS No. 1 fuse
• IG voltage is between 9.5 and 17.2 V.
ABS SOL relay
C0278/11 • Relay contact is open when the relay is ON.
ABS SOL relay circuit
All the following conditions continue for at least 0.2
ABS & TRAC actuator
seconds.
• ? IG voltage is 9.5 V or less when the relay is ON.
• Relay contact remains open.

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The following condition continue for at least 0.2 ABS No. 1 fuse
seconds. ABS SOL relay
C0279/12
• Relay contact is closed immediately after turning IG ABS SOL relay circuit
switch to the ON position when the relay is OFF. ABS & TRAC actuator

WIRING DIAGRAM

Skid Control ECU

FL Block with Actuator
1 ALT ABS No. 1 31
W 1 L
7A 7 S1 +BS
1 2 2 1
W-L GND2
S1
FL MAIN A 32
J6 J1 W-B
S1 GND1
J/C J/C A
Battery
IH EA

G026388E02

1 INSPECT ABS NO. 1 FUSE

(a) Remove the ABS No.1 fuse from the FL block.

BC
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–49

(b) Measure the resistance according to the value(s) in the

FL Block table below.
Resistance
Item Specified condition
ABS No. 1 fuse Below 1 Ω (Continuity)

NG REPLACE FUSE

ABS No. 1
G026178E02

OK

cardiagn.com
2 INSPECT SKID CONTROL ECU CONNECTOR

(a) Disconnect the skid control ECU connector.

(b) Turn the ignition switch to the ON position.
(c) Measure the voltage according to the value(s) in the
Skid Control ECU (harness side connector)
table below.
S1 GND2 Voltage
Tester Connection Specified Condition
S1-31 (+BS) - S1-32 (GND1) 10 to 14 V
S1-31 (+BS) - S1-1 (GND2) 10 to 14 V

+BS GND1 NG Go to step 4

G024767E12

OK

3 RECONFIRM DTC

HINT:
This code is detected when a problem is determined in the
ABS & TRACTION actuator assembly.
The ABS solenoid relay is in the ABS & TRACTION actuator
assembly.
Therefore, solenoid relay circuit inspection relay unit
inspection cannot be performed. Be sure to check if the DTC
code is output before replacing the ABS & TRACTION
actuator assembly.
(a) Clear the DTCs (See page BC-21).
(b) Turn the ignition switch to the ON position.
(c) Are the same DTCs recorded. BC
Result
Result Proceed to
DTC is output A
 BC–50 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

Result Proceed to
DTC is not output B

NOTICE:
When replacing ABS & TRACTION ACTUATOR
ASSEMBLY, perform zero point calibration (See page
BC-5).
B PROCEED TO NEXT CIRCUIT INSPECTION
SHOWN IN PROBLEM SYMPTOMS TABLE

REPLACE ABS AND TRACTION ACTUATOR

4 INSPECT SKID CONTROL ECU CONNECTOR

(a) Disconnect the skid control ECU connector.

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(b) Measure the resistance according to the value(s) in the
Skid Control ECU (harness side connector)
table below.
S1 GND2 Resistance
Tester Connection Specified Condition
S1-32 (GND1) - Body ground Below 1 Ω
S1-1 (GND2) - Body ground Below 1 Ω

GND1 NG REPAIR OR REPLACE HARNESS OR

G024767E13
CONNECTOR

OK

5 RECONFIRM DTC

HINT:
This code is detected when a problem is determined in the
ABS & TRACTION actuator assembly.
The ABS solenoid relay is in the ABS & TRACTION actuator
assembly.
Therefore, solenoid relay circuit inspection relay unit
inspection cannot be performed. Be sure to check if the DTC
code is output before replacing the ABS & TRACTION
actuator assembly.
(a) Clear the DTCs (See page BC-21).
(b) Turn the ignition switch to the ON position.
(c) Are the same DTCs recorded.
Result
Result Proceed to

BC DTC is output
DTC is not output
A
B
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–51

HINT:
It is suspected that the DTCs output was caused by the
poor connection of the connector terminal.
NOTICE:
When replacing ABS & TRACTION ACTUATOR
ASSEMBLY, perform zero point calibration (See page
BC-5).
B PROCEED TO NEXT CIRCUIT INSPECTION
SHOWN IN PROBLEM SYMPTOMS TABLE

REPLACE ABS AND TRACTION ACTUATOR

cardiagn.com

BC
 BC–52 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

DTC C1201/51 Engine Control System Malfunction

DESCRIPTION
If trouble occurs the engine control system, the ECM transmits the abnormality to the skid control ECU.
The skid control ECU set this DTC and the skid control ECU prohibits TRAC and VSC control.
DTC No. DTC Detection Condition Trouble Area
At the engine speed of 500 rpm, a trouble signal in the
C1201/51 Engine control system
engine control system continues for 5 secs. or more.

1 CHECK DTC FOR ENGINE

(a) Check if the normal code is recorded for EFI system.

Result
Result Proceed to
Normal System Code A

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Trouble Code B

B REPAIR ENGINE CONTROL SYSTEM

ACCORDING TO DTC OUTPUT

REPLACE ECM

BC
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–53

DTC C1203/53 ECM Communication Circuit Malfunction

DESCRIPTION
The circuit is used to send TRAC control information (engine revolution signal) from the skid control ECU
to the ECM (TRC+, TRC-), and engine control information from the ECM to the skid control ECU (ENG+,
ENG-).
DTC No. DTC Detection Condition Trouble Area
When any of the following (1 to 3) is detected:
1. All the following conditions continue for at least 5
seconds.
– IG1 terminal voltage is 9.5 V or more.
– Cannot send data to ECM.
2. All the following conditions continue for at least 5
seconds.
• TRC+ or TRC- circuit
– IG1 terminal voltage is more than 9.5 V.
C1203/53 • ENG+ or ENG- circuit
– Engine speed is 500 rpm or more.
• ECM
– Cannot receive data from ECM.
3. All the following conditions repeat 10 times in a
series.
– Cannot send data to ECM.
– Cannot receive data from ECM.

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– Both of the above occur at least once within 5
seconds.

WIRING DIAGRAM

Skid Control ECU with Actuator

ECM

24 9
ENG+ E5 S1 ENG+

30 23
ENG- E5 S1 ENG-

25 8
TRC+ E5 S1 TRC+

31 22
TRC- E5 S1 TRC-

I037921E02

1 CHECK HARNESS AND CONNECTOR

(a) Disconnect the skid control ECU connector and ECM BC

connector.
 BC–54 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

(b) Measure the resistance according to the value(s) in the

Skid Control ECU (harness side connector)
table below.
TRC+ ENG+ Resistance
S1 Tester Connection Specified Condition
S1-8 (TRC+) - E5-25 (TRC+) Below 1 Ω
S1-22 (TRC-) - E5-31 (TRC-) Below 1 Ω
S1-9 (ENG+) - E5-24 (ENG+) Below 1 Ω
S1-23 (ENG-) - E5-30 (ENG-) Below 1 Ω

(c) Measure the resistance according to the value(s) in the

ECM TRC- ENG-
table below.
Resistance
E5 Tester Connection Specified Condition
S1-8 (TRC+) - Body ground 10 kΩ or higher
S1-22 (TRC-) - Body ground 10 kΩ or higher
S1-9 (ENG+) - Body ground 10 kΩ or higher
ENG+
S1-23 (ENG-) - Body ground 10 kΩ or higher
TRC+
TRC-

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ENG- NG REPAIR OR REPLACE HARNESS OR
F045351E02 CONNECTOR

OK

2 CHECK HARNESS AND CONNECTOR

(a) Disconnect the ECM connector.

(b) Measure the resistance according to the value(s) in the
ECM E7 table below.
Resistance
Tester Connection Specified Condition
E7-1 (E1) - Body ground Below 1 Ω

E1
NOTICE:
When replacing the ABS & TRACTION actuator
assembly, perform zero point calibration (See page
G026183E03 BC-5).
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR

OK

REPLACE ABS AND TRACTION ACTUATOR

BC
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–55

Zero Point Calibration of Yaw Rate Sensor

DTC C1210/36
Undone

Zero Point Calibration of Acceleration Sensor

DTC C1336/39
Undone
DESCRIPTION
ABS & TRACTION actuator receives signals from the yaw rate sensor via CAN communication system.
Yaw rate sensor has the built-in G sensor.
If there is trouble in the bus lines between the yaw rate sensor (deceleration sensor) and CAN
communication system, the DTC U0123/62 (yaw rate sensor communication trouble) and U0124/95 (G
sensor communication trouble) are output.
The DTC is also output when the calibration has not been completed.
DTC No. DTC Detection Condition Trouble Area
• Yaw rate sensor (Deceleration sensor)
• Zero point calibration undone (Perform zero point
C1210/36 Zero point calibration of yaw rate sensor undone
calibration and DTC. If DTC is not output again, the

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sensor is normal)
• Deceleration sensor
• Zero point calibration undone (Perform zero point
C1336/39 Zero point calibration of deceleration sensor undone
calibration and DTC. If DTC is not output again, the
sensor is normal)

BC
 BC–56 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

WIRING DIAGRAM

Y1 Skid Control ECU

Yaw Rate Sensor J/C with Actuator

L 1 1 11
CANH L
CANH J26 J22 S1 CANH
3 CANH
2 2 25
W CANL W
CANL J26 J22 S1 CANL
2 CANL J37
J/C
W-B W-B
GND A A
1
E J/C D
BR
IG J31 J30
5

Instrument Panel J/B

W(*1)
1 IG1 Realy ECU-IG No. 1 3
GR

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B(*2 ) 5
1A 1O
3
9 10
1I 1F W-B
2 1 I14
Ignition SW
AM1 4
1I O
2 AM1 IG1 4
G
FL Block
1 INP-J/B
7C
9 2 1 AM1 1
W
7B 7A
2 1

FL MAIN A
J42
J/C
Battery
II BS

*1: w/ Air Suspension System

*2: w/o Air Suspension System
G026390E01

1 PERFORM YAW RATE SENSOR ZERO POINT CALIBRATION

BC (a) Perform the zero point calibration of the yaw rate sensor
and deceleration sensor (See page BC-5).
NEXT
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–57

2 RECONFIRM DTC

(a) Clear the DTCs (See page BC-21).

(b) Turn the ignition switch to the ON position.
(c) Are the same DTCs recorded (See page BC-21).
Result
Result Proceed to
DTC is output A
DTC is not output B

B PROCEED TO NEXT CIRCUIT INSPECTION

SHOWN IN PROBLEM SYMPTOMS TABLE

3 CHECK SENSOR INSTALLATION

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(a) Check that the yaw rate sensor has been installed
properly (See page BC-126).
NOTICE:
When replacing the yaw rate sensor, perform zero
point calibration (See page BC-5).
NG INSTALL YAWRATE SENSOR

OK

REPLACE YAWRATE SENSOR

BC
 BC–58 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

DTC C1223/43 ABS Control System Malfunction

HINT:
• This DTC is output when the VSC system detects a malfunction in the ABS system.
• When DTC C1223/43 is memorized, there is no malfunction in the skid control ECU.

DESCRIPTION
DTC No. DTC Detection Condition Trouble Area
C1223/43 Malfunction in ABS control system ABS control system

1 CHECK DTC OUTPUT (FOR ABS SYSTEM)

(a) Clear the DTCs (See page BC-21).

(b) Turn the ignition switch to the ON position.
(c) Are the same DTCs recorded (See page BC-21).
Result

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Result Proceed to
DTC is output A
DTC is not output B

B PROCEED TO NEXT CIRCUIT INSPECTION

SHOWN IN PROBLEM SYMPTOMS TABLE

REPAIR CIRCUITS INDICATED BY OUTPUT DTCS

BC
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–59

DTC C1224/44 NE Signal Circuit

DESCRIPTION
The skid control ECU receives engine revolution speed signals (NE signals) from the ECM.
DTC No. DTC Detection Condition Trouble Area
When any of the following (1 to 2) is detected:
1. All the following conditions continue for at least 10
seconds.
– Data can be received properly from ECM at a
• NEO circuit
speed of more than 19 mph (30 km/h).
C1224/44 • ECM
– Open or short in engine rpm signal circuit.
• Skid control ECU
2. All the following conditions continue for at least
0.24 seconds.
– TRAC is in operation.
– Open or short in engine rpm signal circuit.

WIRING DIAGRAM

ECM Skid Control ECU with Actuator

cardiagn.com
17 10
NEO E5 S1 NEO

I037920E02

1 CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - ECM)

(a) Disconnect the skid control ECU connector and the ECM
connector.

BC
 BC–60 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

(b) Measure the resistance according to the value(s) in the

Skid Control ECU (harness side connector) table below.
Resistance
S1 NEO Tester Connection Specified Condition
S1-10 (NEO) - E5-17 (NEO) Below 1 Ω

(c) Measure the resistance according to the value(s) in the

table below.
Resistance
Tester Connection Specified Condition
ECM
S1-10 (NEO) - Body ground 10 kΩ or higher

NG REPAIR OR REPLACE HARNESS OR

CONNECTOR

E5

NEO

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G026436E05

OK

2 INSPECT ECM TERMINAL VOLTAGE (NEO TERMINAL)

(a) Reconnect the ECM connector and the skid control ECU
ECM
connector.
E5

NEO

G026185E02

(b) Check the signal waveform between terminal NEO (E5-

20 V/DIV, 17) of the ECM and body ground for the engine
1 ms/DIV conditions below.
4.5 to
14 V
OK
Tester Connection Engine Condition Specified condition
E5-17 (NEO) - Body OFF (Ignition switch 4.5 to 14 V or below 1 V
ground ON)
Below E5-17 (NEO) - Body ON (Idling) Pulse generation (4.5 to
1V GND ground 14 V ←→below 1 V)
A020293E05

NG REPLACE ECM

BC OK
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–61

3 INSPECT SKID CONTROL ECU CONNECTOR

(a) Check if the connector is connected.

OK:
The connector should be securely connected.
NG CONNECT CONNECTOR CORRECTLY

OK

4 RECONFIRM DTC

(a) Clear the DTCs (See page BC-21).

(b) Turn the ignition switch to the ON position.
(c) Are the same DTCs recorded.
Result
Result Proceed to

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DTC is output A
DTC is not output B

NOTICE:
When replacing the ABS & TRACTION; actuator
assembly, perform zero point calibration (See page
BC-5).
B PROCEED TO NEXT CIRCUIT INSPECTION
SHOWN IN PROBLEM SYMPTOMS TABLE

REPLACE ABS AND TRACTION ACTUATOR

BC
 BC–62 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

DTC C1231/31 Steering Angle Sensor Circuit Malfunction

DESCRIPTION
The steering angle sensor signal is sent to the skid control ECU through the CAN communication system.
When there is a malfunction in the communication, it will be detected by the diagnosis function.
DTC No. DTC Detection Condition Trouble Area
• Steering angle sensor
When ECU IG1 terminal voltage is 9.5 V or more, the
C1231/31 • Steering angle sensor circuit
steering angle sensor malfunction signal is received.
• +B circuit

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BC
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–63

WIRING DIAGRAM

S10 Skid Control ECU

Steeing Angle Sensor with Actuator
1 1 1 11
B B CANH L
CANH IQ1 J23 J22 S1 CANH
10 CANH
12 2 2 25
W W CANL W
CANL IQ1 J23 J22 S1 CANL
9 CANL

J/B No. 3
6 4
W-B W-B
ESS 2 3C 3G
11 1
Y Y
IG 3C 3F
1
Instrument Panel J/B
1 5 1 10
SB SB
BAT 3C 3F 1F 1D
3

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L-B
Instrument Panel J/B
W(*1)
1 IG1 Relay 11
B(*2) 1A 1F
5 3
9 ECU-IG No. 1 10
G W-B
1I 1F
2 1
I14
Ignition SW
AM1 4
O
1I
2 AM1 IG1 4

FL Block
1 INP-J/B
7C
2 1
1 ALT
7B
2 1
ECU-B DCC 1
1 W
7 2 1 7A
2

FL MAIN

Batteery
II II

*1: w/ Air Suspension System

*2: w/o Air Suspension System
G026389E01
BC
 BC–64 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

1 CHECK TERMINAL VOLTAGE (STEERING ANGLE SENSOR CONNECTOR)

(a) Remove the steering wheel and the column lower cover.
(b) Disconnect the steering angle sensor connector.
(c) Turn the ignition switch to the ON position.
(d) Measure the voltage according to the value(s) in the
Steering Angle Sensor table below.
(harness side connector)
Voltage
(-) (+)
BAT Tester Connection Specified Condition
S10-1 (IG) - S10-2 (ESS) 10 to 14 V

S10 (e) Measure the voltage according to the value(s) in the

IG1 table below.
ESS Voltage
(+) (-)
G026292E05
Tester Connection Specified Condition
S10-9 (IG) - S10-2 (ESS) 10 to 14 V

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NG REPAIR OR REPLACE HARNESS OR
CONNECTOR

OK

REPLACE STEERING ANGLE SENSOR

BC
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–65

DTC C1232/32 Stuck in Deceleration Sensor

DTC C1234/34 Yaw Rate Sensor Malfunction

DTC C1243/43 Acceleration Sensor Stuck Malfunction

DTC C1244/44 Open or Short in Deceleration Sensor Circuit

DTC C1245/45 Acceleration Sensor Output Malfunction

Yaw Rate and / or Acceleration Sensor Power

DTC C1381/97
Supply Voltage Malfunction
DESCRIPTION
The yaw rate sensor and deceleration sensor signal is sent to the skid control ECU through the CAN

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communication system. When there is a malfunction in the communication, it will be detected by the
diagnosis function.
DTC No. DTC Detection Condition Trouble Area
While the vehicle is at a speed of 6 mph (10 km/h) or
• Yaw rate (deceleration) sensor
more, the condition that the fluctuation range of the
C1232/32 • Yaw rate (deceleration) sensor circuit
signal from either GL1 or GL2 is under 80 mV and the
• CAN communication circuit
other is above 1.9 V continues for 30 seconds or more.
• Yaw rate (deceleration) sensor
Sensor malfunction signal is received from yaw rate
C1234/34 • Yaw rate (deceleration) sensor circuit
sensor.
• CAN communication circuit
The following condition repeats 16 times.
• Yaw rate (deceleration) sensor
• GL1 and GL2 do not change by more than 2LSB
C1243/43 • Yaw rate (deceleration) sensor circuit
when the vehicle decelerates from 19 mph (30 km/
• CAN communication circuit
h) to 0 mph (0 km/h).
When any of the following (1 to 2) is detected:
1. All the following conditions continue for at least 60
seconds.
• Yaw rate (deceleration) sensor
– Vehicle is stopped.
C1244/44 • Yaw rate (deceleration) sensor circuit
– Difference between GL1 and GL2 does not
• CAN communication circuit
drop below 0.4 G once it reaches 0.6 G or
more.
2. Data malfunction signal is received from G sensor.
The following condition continue for at least 60
• Yaw rate (deceleration) sensor
seconds.
C1245/45 • Yaw rate (deceleration) sensor circuit
• Difference between the values calculated from G
• CAN communication circuit
sensor value and vehicle speed exceeds 0.35 G.
G sensor power source malfunction signal is received • Yaw rate (deceleration) sensor
C1381/97 for at least 10 sec. at a speed of more than 2 mph (3 • Yaw rate (deceleration) sensor circuit
km/h). • CAN communication circuit

BC
 BC–66 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

WIRING DIAGRAM

Y1 Skid Control ECU

Yaw Rate Sensor J/C with Actuator

1 1 11
L CANH L
CANH J26 J22 S1 CANH
3 CANH
2 CANL 2 25
W W
CANL J26 J22 S1 CANL
2 CANL
J/C
GHD W-B W-B
1 A A
E J/C D
BR
IG J31 J30
5

Instrument Panel J/B

W(*1) IG1 Relay ECU-IG No. 1
1 3

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B(*2) 5 GR
1A 1O
3
9 10
W-B
1I 1F
2 1 I14
Ignition SW
AM1 4
O
1I
2 AM1 IG1 4
G
FL Block
1 INP-J/B
7C
2 1
1 ALT 1
W
7B 7A
2 1

FL MAIN A
J42
J/C
Bateery
II BS

*1: w/ Air Suspension System

*2: w/o Air Suspension System
G026390E02

1 CHECK SENSOR

BC (a) Check that the yaw rate and deceleration sensor has
been installed properly (See page BC-126).
OK:
The sensor should be tightened to the specified
torque.
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–67

The sensor should not be tilted.

NG INSTALL YAWRATE SENSOR

OK

2 CHECK HARNESS AND CONNECTOR

(a) Disconnect the yaw rate and deceleration sensor

connector.
(b) Turn the ignition switch to the ON position.
(c) Measure the voltage according to the value(s) in the
Yaw Rate and Deceleration Sensor
table below.
(harness side connector)
Voltage
Tester Connection Specified Condition
Y1-5 (IG) - Body ground 10 to 14 V
Y1
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR

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IG
F045082E08

OK

3 CHECK HARNESS AND CONNECTOR

(a) Disconnect the yaw rate and deceleration sensor

connector.
Yaw Rate and Deceleration Sensor
(b) Measure the resistance according to the value(s) in the
(harness side connector) table below.
Resistance
Tester Connection Specified Condition
Y1-1 (GND) - Body ground Below 1 Ω
Y1

NG REPAIR OR REPLACE HARNESS OR

GND CONNECTOR
F045082E09

OK

REPLACE YAWRATE SENSOR

BC
 BC–68 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

DTC C1241/41 Low Battery Positive Voltage

DESCRIPTION
DTC No. DTC Detection Condition Trouble Area
When any of the following (1 to 2) is detected:
1. All the following conditions continue for at least 10
seconds.
– Vehicle speed is more than 3 km/h (2 mph).
• Battery
– IG1 terminal voltage is less than 9.5 V.
C1241/41 • Charging system
2. All the following conditions continue for at least 0.2
• Power source circuit
seconds.
– Solenoid relay remains ON.
– IG1 terminal voltage is less than 9.5 V.
– Relay contact is open.

WIRING DIAGRAM

Skid Control ECU

Instrument Panel J/B with Actuator

cardiagn.com
J9
W(*1) IG1 Relay ECU-IG No. 2 J/C C J/C
1 19 A 46
B(*2) LG P P
1A
3 1F J7 J8
A A S1 IG1
9 5 10
G W-B
1I 1F
2 1
l14 Ignition SW
AM1 4
O G
1I
2 AM1 IG1 4

FL Block 1
W-L
1 INP-J/B S1 GND2
7C 32
2 1 W-B
1 ALT 1 S1 GND1
7B 7A
2 1

W
A A
FL MAIN
J6 J1
J/C J/C
Battery
*1: w/ Air Suspension System IH EA II
*2: w/o Air Suspension System

G026394E02

1 INSPECT ECU-IG FUSE

(a) Remove the ECU-IG fuse from the instrument panel J/B.
BC
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–69

(b) Check continuity of the ECU-IG fuse.

Instrument Resistance
Panel J/B
Item Specified condition
ECU-IG 2 Fuse Below 1 Ω (Continuity)

NG REPLACE ECU-IG FUSE

ECU-IG2
F045093E03

OK

2 INSPECT BATTERY

(a) Check the positive battery voltage.

Voltage:
11 to 14 V

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NG INSPECT CHARGING SYSTEM

OK

3 INSPECT SKID CONTROL ECU TERMINAL VOLTAGE (IG1 TERMINAL)

(a) WHEN USING INTELLIGENT TESTER:

(1) Connect the intelligent tester to the DLC3.
(2) Start the engine.
(3) Select the DATA LIST mode on the intelligent tester.
(4) Measure the voltage condition output from the ECU
displayed on the intelligent tester.
Item Measurement Item / Range (Display) Normal Condition
ECU power supply voltage / UNDER / NORMAL: 9.5 V or over
IG VOLTAGE
NORMAL UNDER: Below 9.5 V

OK:
"Normal" is displayed.
(b) WHEN NOT USING INTELLIGENT TESTER:
(1) Disconnect the skid control ECU connector S1.
(2) Turn the ignition switch to the ON position.
(3) Measure the voltage according to the value(s) in the
Skid Control ECU (harness side connector)
table below.
GND2 Voltage
S1
Tester Connection Specified Condition
S1-46 (IG1) - S1-32 (GND1) 10 to 14 V
S1-46 (IG1) - S1-1 (GND2) 10 to 14 V

NOTICE:
GND1 IG1 When replacing the ABS actuator assembly,
G024767E14 perform zero point calibration (See page BC-5). BC
NG Go to step 4
 BC–70 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

OK

REPLACE ABS AND TRACTION ACTUATOR

4 INSPECT SKID CONTROL ECU CONNECTOR (GND TERMINAL CONTINUITY)

(a) Disconnect the skid control ECU connector S1.

(b) Measure the resistance according to the value(s) in the
Skid Control ECU (harness side connector)
table below.
GND2 Resistance
S1
Tester Connection Specified Condition
S1-32 (GND1) - Body ground Below 1 Ω
S1-1 (GND2) - Body ground Below 1 Ω

GND1 NG REPAIR OR REPLACE HARNESS OR

CONNECTOR (GND TERMINAL - BODY

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G024767E15

GROUND)

OK

CHECK HARNESS AND CONNECTOR

BC
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–71

DTC C1246/46 Master Cylinder Pressure Sensor Malfunction

DESCRIPTION
Master cylinder pressure sensor is connected to the skid control ECU in the actuator.
DTC No. DTC Detection Condition Trouble Area
• When the vehicle speed is 4 mph(7 km/h) or more
and PMC terminal voltage of skid control ECU
exceeds 0.86 V, the condition that the voltage does
not change by 0.005 V or more continues for 30
sec.
• Noise in terminal PMC of skid control ECU occurs 7
times or more within 5 sec.
• When the stop light switch is off, the condition that
PMC terminal voltage of skid control ECU is 0.86 V
or more, or less than 0.3 V continues for 5 sec. or • Master cylinder pressure sensor
C1246/46
more. • Master cylinder pressure sensor circuit
• When IG1 terminal voltage is between 9.5 and 17.2
V, the condition that the VCM terminal voltage of
skid control ECU is out of the range from 4.4 to 5.6
V continues for 1.2 sec. or more.
• When VCM terminal voltage of skid control ECU is
between 4.4 and 5.6 V, the condition that the PMC

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terminal voltage of skid control ECU is out of the
range from 0.14 to 4.85 V continues for 1.2 sec. or
more.

HINT:
Start the inspection from step 1 when using the intelligent tester and start from step 2 when not using the
intelligent tester.

1 READ VALUE OF INTELLIGENT TESTER (MASTER CYLINDER PRESSURE SENSOR)

(a) Connect the intelligent tester to the DLC3.

(b) Start the engine.
(c) Select the DATA LIST mode on the intelligent tester.
Item Measurement Item / Range (Display) Normal Condition
Master cylinder pressure sensor 1 reading /
MAS CYL PRS 1 When brake pedal is released : 0.3 to 0.9 V
min.: 0 V, max.: 5 V

(d) Check that the brake fluid pressure value of the master
cylinder pressure sensor indicated on the intelligent
tester, changes when the brake pedal is depressed.
OK:
Brake fluid pressure value should change.
NOTICE:
When replacing the ABS &TRACTION actuator assembly,
perform zero point calibration (See page BC-5).
NG Go to step 2

OK

REPLACE ABS AND TRACTION ACTUATOR

BC
 BC–72 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

2 INSPECT SKID CONTROL ECU TERMINAL VOLTAGE (STP TERMINAL)

(a) Disconnect the skid control ECU connector.

(b) Measure the voltage according to the value(s) in the
Skid Control ECU (harness side connector)
table below.
S1 Voltage
Tester Connection Switch condition Specified Condition
S1-27 (STP) - Body
Brake pedal depressed 8 to 14 V
ground
S1-27 (STP) - Body
Brake pedal depressed Below 1 V
ground
STP
G024767E16
NOTICE:
When replacing the ABS & TRACTION actuator
assembly, perform zero point calibration (See page
BC-5).
NG REPAIR OR REPLACE STOP LIGHT SWITCH
CIRCUIT

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OK

REPLACE ABS AND TRACTION ACTUATOR

BC
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–73

DTC C1249/49 Open in Stop Light Switch Circuit

DESCRIPTION
DTC No. DTC Detection Condition Trouble Area
• When IG1 terminal voltage is 9.5 to 17.2 V, an open
circuit of the stop light switch continues for 0.3 sec.
or more.
• When the brake pedal load sensing switch is on, • Stop light assembly
C1249/49
the master cylinder pressure is 2 Mpa or more and • Stop light switch circuit
the deceleration calculated from the vehicle speed
is 0.2Gor more, the stop light switch is off for 2 sec.
or more.

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BC
 BC–74 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

WIRING DIAGRAM

Skid Control ECU

Engine Room R/B with Actuator
BRK Relay 27
GR(*3) W(*3)
2 2 S1 STP1
4 3 W(*3) Istrument Panel J/B
8 7 13
J8 GR(*4) B W
IA1 1M 1C
JC B (*4)
B Rear J/B
7 20 9 3
L L
BB1 5C 5C 1P
10
L
5C
19 S31
5C Stop Light LH

L W-B
1 2

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S32
Stop Light RH
J35 A
W-B J/C
1 2 A
H28 A
HIght Mounted Stop Light
G W-B
2 1
S13 Istrument Panel J/B
Stop Light Switch STOP W(*1)
8 1
GR B B(*2)
1 2 1C 1A

FL Block W-B
INP-J/B 1
7C
1 2
1 ALT 1
W
7A 7B
1 2

FL MAIN A
J36
J/C
Battery
*1: w/ Air Suspension System BR BO
*2: w/o Air Suspension System
*3: w/ Dynamic Laser Cruise Control
*4: w/o Dynamic Laser Cruise Control

BC G026399E01
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–75

1 CHECK STOP LIGHT SWITCH OPERATION

(a) Check that the stop light comes on when the brake pedal
is depressed and goes off when the brake pedal is
released.
OK
Pedal Condition Illumination Condition
Brake pedal depressed ON
Brake pedal released OFF

HINT:
Check the stop light bulb as it may have burnt out.
NG Go to step 4

OK

2 INSPECT SKID CONTROL ECU TERMINAL VOLTAGE (STP TERMINAL)

cardiagn.com
(a) Disconnect the skid control ECU connector.
(b) Measure the voltage according to the value(s) in the
Skid Control ECU (harness side connector)
table below.
S1 Voltage
Tester Connection Switch condition Specified Condition
S1-27 (STP) - Body
Brake pedal depressed 8 to 14 V
ground
S1-27 (STP) - Body
Brake pedal released Below 1 V
ground
STP
G024767E17
NG Go to step 5

OK

3 RECONFIRM DTC

(a) Clear the DTCs (See page BC-21).

(b) Turn the ignition switch to the ON position.
(c) Are the same DTCs detected.
Result
Result Proceed to
DTC is output A
DTC is not output B

NOTICE:
When replacing the ABS & TRACTION actuator
assembly, perform zero point calibration (See page
BC-5).
B PROCEED TO NEXT CIRCUIT INSPECTION BC
SHOWN IN PROBLEM SYMPTOMS TABLE
 BC–76 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

REPLACE ABS AND TRACTION ACTUATOR

4 INSPECT STOP LIGHT SWITCH ASSEMBLY

(a) Disconnect the stop light switch assembly connector.

(b) Measure the resistance according to the value(s) in the
Stop Light Switch Assembly
table below.
Resistance
Switch condition Tester connection Specified condition
Switch pin free 1-2 Below 1 Ω
Switch pin pushed in 1-2 10 kΩ or higher
2 1
Free Pushed In NG REPLACE STOP LIGHT SWITCH ASSEMBLY

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E065594E28

OK

5 CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH - SKID CONTROL ECU)

(a) Disconnect the stop light switch connector and skid

control ECU connector.
(b) Measure the resistance according to the value(s) in the
Skid Control ECU table below.
(harness side connector) Resistance
Tester Connection Specified Condition
S1
S1-27 (STP) - S13-1 (STP) Below 1 Ω

NOTICE:
When replacing the ABS & TRACTION actuator
assembly, perform zero point calibration (See page
Stop Light Switch
STP BC-5).
(harness side connector) NG REPAIR OR REPLACE HARNESS OR
CONNECTOR

S13

STP

G026188E03

BC OK

REPLACE ABS AND TRACTION ACTUATOR

 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–77

DTC C1251/51 Open in Pump Motor Circuit

DESCRIPTION
DTC No. DTC Detection Condition Trouble Area
• ABS & TRAC actuator
C1251/51 ABS pump motor is not operating normally.
• ABS & TRAC actuator circuit

WIRING DIAGRAM

Skid Control ECU

with Actuator
2
B-W
S1 BM
Y 45
S1 R+
J/B No. 2
5 5 15
L
2G 2G S1 MR

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1
2G
2D

6 14
R
2G S1 MRF
3
R
2F
1 1
2F W-B W-L
2G S1 GND2
13 32
W-B W-B S1 GND1
2H

FL Block
ABS No.2 ALT 1
1
7 1 7A
2 2

W J6 J5 J6 J1
FL MAIN A J/C A J/C A J/C A J/C

Battery
IH EG IH EA

G026400E02

HINT:
Start the inspection from step 1 in case of using the intelligent tester and start from step 2 in case of not
using the intelligent tester.

1 PERFORM ACTIVE TEST BY INTELLIGENT TESTER (ABS MOTOR RELAY OPERATION)

(a) Connect the intelligent tester to the DLC3.

BC
(b) Start the engine.
(c) Select the ACTIVE TEST mode on the intelligent tester.
 BC–78 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

(d) Check the operation sound of the ABS motor individually

when operating it with the intelligent tester.
Item Vehicle Condition / Test Details Diagnostic Note
Operation of motor (clicking sound) can be
ABS MOT RELAY ABS motor relay / ON or OFF
heard

OK:
The operation sound of the ABS motor should be
heard.
NOTICE:
When replacing the ABS & TRACTION actuator
assembly, perform zero point calibration (See page
BC-5).
NG Go to step 2

OK

REPLACE ABS AND TRACTION ACTUATOR

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2 INSPECT HARNESS AND CONNECTOR (GND1 OF SKID CONTROL ECU AND BODY)

(a) Disconnect the skid control ECU connector.

(b) Measure the resistance according to the value(s) in the
Skid Control ECU (harness side connector)
table below.
S1 Resistance
Tester Connection Specified Condition
S1-32 (GND1) - Body ground Below 1 Ω

NOTICE:
When replacing the ABS & TRACTION actuator
GND1 assembly, perform zero point calibration (See page
G024767E18 BC-5).
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR

OK

REPLACE ABS AND TRACTION ACTUATOR

BC
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–79

DTC C1267/67 Brake Pedal Load Sensing Switch

DESCRIPTION
DTC No. DTC Detection Condition Trouble Area
• Open or short circuit in brake pedal load sensing
switch continues for 0.3 sec. or more.
• Immediately after IG1 is turned to the ON position,
the condition that brake pedal load sensing switch
is ON and stop light switch is off continues for 10 • Brake pedal load sensing switch
C1267/67
sec. or more. • Brake pedal load sensing switch circuit
• While vehicle speed changes from 0 km/h (0 mph)
to 30 km/h (19 mph), the condition that the brake
pedal load sensing switch is on repeatedly occurs 5
times.

WIRING DIAGRAM

Skid Control ECU

B8 with ctuator
Brake Pedal Load

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Sensing Switch 7
W-B LG
S1 FSW+
1 2
A
J6
J/C

IH

G026391E01

HINT:
Start the inspection from step 1 when using the intelligent tester and start from step 2 when not using the
intelligent tester.

1 READ VALUE OF INTELLIGENT TESTER

(a) Connect the intelligent tester to the DLC3.

(b) Start the engine.
(c) Select the DATA LIST mode on the intelligent tester.
(d) Read the value of the brake pedal load sensing switch
displayed on the intelligent tester when depressing and
releasing the brake pedal.
Item Vehicle Condition / Test Details Diagnostic Note
ON : Depressed brake pedal
BRAKE WRN LIGHT Brake load sensing switch / ON or OFF
OFF : Released brake pedal

OK BC
Condition Display
Depress the brake pedal ON
Release the brake pedal OFF
 BC–80 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

NG Go to step 3

OK

2 RECONFIRM DTC OUTPUT

(a) Check if other DTCs are recorded. (See page BC-21)

Result
Result Proceed to
DTCs are output A
DTCs are not output B

B Go to step 3

REPAIR CIRCUITS INDICATED BY OUTPUT DTCS

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3 INSPECT BRAKE PEDAL SUB-ASSEMBLY

NOTICE:
Do not disassemble the brake pedal sub-assembly.
HINT:
Replace the brake pedal sub-assembly when there is a
malfunction in the brake pedal load sensing switch.
(a) Disconnect the brake pedal load sensing switch
connector B8.
(b) Measure the resistance according to the value(s) in the
From September, 2003: table below.
FSW+ Resistance
GND Brake Pedal Load Tester Connection Condition Specified Condition
Sensing Switch Depress brake pedal Approx. 1000 Ω
B8-2 (FSW+) - B8-1
(GND) Release brake pedal Approx. 213 Ω
B8
Release Brake Pedal (ON)
NG REPAIR OR REPLACE BRAKE PEDAL SUB-
1000 Ω
ASSEMBLY
270 Ω
2 1

Depress Brake Pedal (OFF)

Brake Pedal
sub-assembly
BC
F046887E02
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–81

OK

4 CHECK HARNESS OR CONNECTOR (SKID CONTROL ECU - BRAKE PEDAL LOAD

SENSING SWITCH)

(a) Disconnect the skid control ECU connector S1 and the

brake pedal load sensing switch connector B8.
(b) Measure the resistance according to the value(s) in the
Skid Control ECU table below.
(harness side connector) S1 Resistance
FSW+
Tester Connection Specified Condition
S1-7 (FSW+) - B8-2 (FSW) Below 1 Ω

(c) Measure the resistance according to the value(s) in the

table below.
Brake Pedal Load Sensing Switch Resistance
(harness side connector)
Tester Connection Specified Condition
B8 S1-7 (FSW+) - Body ground 10 kΩ or higher

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FSW NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
G026242E02

OK

REPLACE ABS AND TRACTION ACTUATOR

BC
 BC–82 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

ABS Warning Light Remains ON

DESCRIPTION
If either of following is detected, the ABS warning light remains on.
• Voltage of ECU terminal IG1 remains at more than 17 V.
• There is a malfunction in the ECU internal circuit.

WIRING DIAGRAM

Skid Control ECU

Combination Meter with Actuator
6 R 14 29
V
C9 IO1 S1 WA
Active Instrument Panel J/B
Circuit J9 J/C
8 12 GAUGE No.2 7 46
GR P
C8 1G 1I S1 IG1
A
ABS
A

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Instrument Panel J/B
B(*2) IG1 Relay J/C
1 19 A C
W(*1) 1A 3 1F LG J7 J8 P
5
9 ECU-IG No.2 10
G W-B
1I 1F
2 1
I14 Ignition SW
AM1 4
O G
1I
2 AM1 IG1 4

2
B-Y R
IA4
7 AM2 IG2 6

FL Block 1
W-B
AM2 S1 GND2
7 2 32
1
1 ALT 1 W-B S1 GND1
7A W
7B 2 1
1 INP-J/B
7C 2 1

A A
FL MAIN J6 J1
J/C J/C
Battery
IH EA II
*1: w/ Air Suspension System
BC *2: w/o Air Suspension System

G026393E01
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–83

1 CHECK DTC OUTPUT

(a) Is DTC output for ABS.

Result
Result Proceed to
DTC is not output A
DTC is output B

B REPAIR CIRCUITS INDICATED BY OUTPUT

DTCS

2 INSPECT SKID CONTROL ECU CONNECTOR

(a) Check the ECU connector's connecting condition.

OK:

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The connector should be securely connected.
NG CONNECT CONNECTOR CORRECTLY

OK

3 INSPECT BATTERY

(a) Check the battery voltage.

Voltage:
11 to 14 V
NG INSPECT CHARGING SYSTEM

OK

4 INSPECT SKID CONTROL ECU TERMINAL VOLTAGE (IG1 TERMINAL)

(a) WHEN USING INTELLIGENT TESTER:

(1) Connect the intelligent tester to the DLC3.
(2) Start the engine.
(3) Select the DATA LIST mode on the intelligent tester.
Item Measurement Item / Range (Display) Normal Condition
ECU power supply voltage / UNDER / NORMAL: 9.5 V or over
IG VOLTAGE
NORMAL UNDER: Below 9.5 V

(4) Read the voltage condition output from the ECU

displayed on the intelligent tester.
OK:
"Normal" is displayed.
(b) WHEN NOT USING INTELLIGENT TESTER: BC
(1) Disconnect the skid control ECU connector.
(2) Turn the ignition switch ON position.
 BC–84 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

(3) Measure the voltage according to the value(s) in the

Skid Control ECU (harness side connector)
table below.
GND2 Voltage
S1
Tester Connection Specified Condition
S1-46 (IG1) - S1-32 (GND1) 10 to 14 V
S1-46 (IG1) - S1-1 (GND2) 10 to 14 V

GND1 IG1 NG Go to step 6

G024767E20

OK

5 INSPECT ABS WARNING LIGHT

(a) WHEN USING INTELLIGENT TESTER:

(1) Connect the intelligent tester to the DLC3 and start
the engine.
(2) Select the item "ABS WARN LIGHT" in the ACTIVE

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TEST and operate the ABS warning light on the
intelligent tester.
(3) Check that "ON" and "OFF" of the ABS warning light
can be shown on the combination meter by the
intelligent tester.
(b) WHEN NOT USING INTELLIGENT TESTER:
Skid Control ECU
(harness side connector) (1) Turn the ignition switch off and disconnect the
S1 connector S1from the skid control ECU.
(2) Ground the terminal WA of the skid control ECU.
(3) Turn the ignition switch to the ON position.
(4) Check that the ABS warning light goes off.
OK REPAIR OR REPLACE ABS WARNING LIGHT
WA CIRCUIT
G024767E19

NG

REPLACE ABS AND TRACTION ACTUATOR

6 CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - BODY GROUND)

(a) Disconnect the skid control ECU connector.

BC
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–85

(b) Measure the resistance according to the value(s) in the

Skid Control ECU (harness side connector)
table below.
GND2 Resistance
S1
Tester Connection Specified Condition
S1-1 (GND2) - Body ground Below 1 Ω
S1-32 (GND1) - Body ground Below 1 Ω

NOTICE:
GND1 When replacing ABS & TRACTION actuator
G024767E21 assembly, perform zero point calibration (See page
BC-5).
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR

OK

REPLACE ABS AND TRACTION ACTUATOR

cardiagn.com

BC
 BC–86 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

VSC Warning Light Remains ON

DESCRIPTION
If the ECU stores DTC, the VSC warning light comes on in the combination meter.

WIRING DIAGRAM

Skid Control ECU

Combination Meter with Actuator
9 15 R 36
C9 O S1 VSCW
IO1
Instrument Panel J/B
8 12 GAUGE No.2 7 J9 J/C 46
C8 GR 1G 1I P S1 IG1
VSC A
A
V
Instrument Panel J/B

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B(*2) IG1 Relay A J/C C
1 19
W(*1) 3 LG J8 P
1A 1F J7
5
9 ECU-IG No.2 10
G 1I W-B
2 1 1F

I14 Ignition SW
AM1 4
1I O G
2 AM1 IG1 4

2
B-Y R
IA4
7 AM2 IG2 6

FL Block 1
W-L
AM2 S1 GND2
7 32
2 1
1 ALT 1 W-B S1 GND1
7B W
7A
2 1
1 INP-J/B
7C
2 1

A A
FL MAIN J6 J1
J/C J/C
Battery
IH EA II
*1: w/ Air Suspension System
*2: w/o Air Suspension System

BC G026439E01
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–87

1 CHECK DTC OUTPUT

(a) Is DTC output for ABS and VSC?

Result
Result Proceed to
DTC is not output A
DTC is output B

B REPAIR CIRCUITS INDICATED BY OUTPUT

DTCS

2 INSPECT SKID CONTROL ECU CONNECTOR

(a) Check the ECU connector's connecting condition.

OK:

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The connector should be securely connected.
NG CONNECT CONNECTOR CORRECTLY

OK

3 INSPECT BATTERY

(a) Check the battery voltage.

Voltage:
11 to 14 V
NG INSPECT CHARGING SYSTEM

OK

4 INSPECT SKID CONTROL ECU TERMINAL VOLTAGE (IG1 TERMINAL)

(a) WHEN USING INTELLIGENT TESTER:

(1) Connect the intelligent tester to the DLC3.
(2) Start the engine.
(3) Select the DATA LIST mode on the intelligent tester.
Item Measurement Item /Range (Display) Normal Condition
ECU power supply voltage / UNDER / NORMAL: 9.5 V or over
IG VOLTAGE
NORMAL UNDER: Below 9.5 V

(4) Check the voltage condition output from the ECU

displayed on the intelligent tester.
OK:
"Normal" is displayed.
(b) WHEN NOT USING INTELLIGENT TESTER: BC
(1) Disconnect the skid control ECU connector.
(2) Turn the ignition switch to the ON position.
 BC–88 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

(3) Measure the voltage according to the value(s) in the

Skid Control ECU (harness side connector)
table below.
GND2 Voltage
S1
Tester Connection Specified Condition
S1-46 (IG1) - S1-32 (GND1) 10 to 14 V
S1-46 (IG1) - S1-1 (GND2) 10 to 14 V

GND1 IG1 NG Go to step 6

G024767E22

OK

5 CHECK VSC WARNING LIGHT

(a) WHEN USING INTELLIGENT TESTER:

(1) Connect the intelligent tester to the DLC3 and start
the engine.
(2) Select the item "VSC WARN LIGHT" in the ACTIVE

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TEST and operate the VSC warning light on the
intelligent tester.
(3) Check that "ON" and "OFF" of the VSC warning light
can be shown on the combination meter by the
intelligent tester.
(b) WHEN NOT USING INTELLIGENT TESTER:
Skid Control ECU (1) Turn the ignition switch off and disconnect the
(harness side connector)
S1 connector S1 from the skid control ECU.
(2) Turn the ignition switch to the ON position.
(3) Check that the VSC warning light goes off.
NG REPAIR OR REPLACE ABS WARNING LIGHT
CIRCUIT
VSCW

G024767E23

OK

REPLACE ABS AND TRACTION ACTUATOR

6 CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - BODY GROUND)

(a) Disconnect the skid control ECU connector.

(b) Measure the resistance according to the value(s) in the
table below.
Resistance
Tester Connection Specified Condition
Below 1 Ω
BC S1-32 (GND1) - Body ground

NOTICE:
When replacing ABS & TRACTION actuator
assembly, perform zero point calibration (See page
BC-5).
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–89

NG REPAIR OR REPLACE HARNESS OR

CONNECTOR

OK

REPLACE ABS AND TRACTION ACTUATOR

cardiagn.com

BC
 BC–90 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

Brake Warning Light Remains ON

DESCRIPTION
The BRAKE warning light comes on when the brake fluid is insufficient, the parking brake is applied or the
EBD is defective.

WIRING DIAGRAM

Skid Control ECU

Combination Meter with Actuator

7 13 44
P GR
C9 IO1 S1 BRL
Active B1
Circuit Brake Fluid Level

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8 12 Warning Switch
W LG BRL
C9 IO1 1 2

Instrument Panel J/B

8 12 GAUGE No.2 7
GR V
C8 1G 1I
BRAKE

I14
FL Block
Ignition Switch
1 AM2 2
B-Y R
7A 1 7 IA4
2 7 AM2 IG2 6

P6 Instrument Panel J/B

Parking brake Switch 14 7 28
LG LG
1C 1C S1 PKB
1

FL MAIN
A
J6
J/C
Battery
IH

BC G026395E01
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–91

HINT:
When releasing the parking brake, move the shift lever into the P position in an AT vehicle, and choke in
an MT vehicle to hold the vehicle for safety.

1 CHECK BRAKE FLUID

(a) Check that the brake fluid level is proper.

NG ADD BRAKE FLUID

OK

2 CHECK DTC FOR ABS

(a) Are the DTC recorded (See page BC-21).

Result
Result Proceed to
DTC is output A

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DTC is not output B

B Go to step 3

REPAIR CIRCUITS INDICATED BY OUTPUT DTCS

3 INSPECT BRAKE WARNING LIGHT

(a) WHEN USING INTELLIGENT TESTER:

(1) Connect the intelligent tester to the DLC3.
(2) Start the engine.
(3) Select the item "BRAKE WARN LIGHT" in the
ACTIVE TEST and operate the BRAKE warning
light on the intelligent tester.
Item Vehicle Condition / Test Details Diagnostic Note
BRAKE WRN LIGHT Turns BRAKE warning light ON / OFF Observe combination meter

(4) Check that "ON" and "OFF" of the BRAKE warning

light are indicated on the combination meter when
using the intelligent tester.
OK:
Turn the BRAKE warning light on or off in
accordance with the intelligent tester.
(b) WHEN NOT USING INTELLIGENT TESTER:
(1) Turn the ignition switch off and disconnect the
connector from the skid control ECU.
BC
 BC–92 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

(2) Ground terminal BRL of the skid control ECU.

Skid Control ECU (harness side connector)
(3) Turn the ignition switch to the ON position.
S1 GND2 (4) Check that the brake warning light.
OK:
Turn the light on or off in accordance with the
connection of terminal GND and BRL.
NOTICE:
When replacing the ABS actuator assembly,
GND1 BRL perform zero point calibration (See page BC-5).
G024767E24
NG Go to step 4

OK

REPLACE ABS AND TRACTION ACTUATOR

4 INSPECT PARKING BRAKE SWITCH ASSEMBLY

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(a) Remove the parking brake switch connector.
(b) Measure the resistance according to the value(s) in the
Parking Brake Switch Release Push table below.
Resistance
Tester Connection Switch Condition Specified Condition
P6-1 - Ground part Released Below 1 Ω
P6-1 - Ground part Pushed in 10 kΩ or higher
P6
NG REPLACE PARKING BRAKE SWITCH
G026238E11
ASSEMBLY

OK

5 CHECK HARNESS AND CONNECTOR (SKI CONTROL ECU - PARKING BRAKE SWITCH)

(a) Disconnect the skid control ECU connector and the

parking brake switch connector.
(b) Measure the resistance according to the value(s) in the
Skid Control ECU (harness side connector)
table below.
Resistance
S1
Tester Connection Specified Condition
S1-28 (PKB) - P6-1 (PKB) Below 1 Ω

(c) Measure the resistance according to the value(s) in the

PKB table below.
Parking Brake Switch (harness side connector) Resistance
Tester Connection Specified Condition

P6 S1-28 (PKB) - Body ground 10 kΩ or higher

BC PKB
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
G026243E02
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–93

OK

6 INSPECT BRAKE FLUID LEVEL WARNING SWITCH

(a) Remove the reservoir tank cap and strainer.

(b) Disconnect the brake fluid level warning switch
connector.
Brake Fluid Level Warning Switch
(c) Measure the resistance according to the value(s) in the
table below.
Resistance
B1
Tester Connection Switch Condition Specified Condition
(B1-1) - (B1-2) Float UP 10 kΩ or higher
(B1-1) - (B1-2) Float DOWN Below 1 Ω

NG REPLACE BRAKE FLUID LEVEL WARNING

G026237E05
SWITCH

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OK

7 CHECK HARNESS AND CONNECTOR (BRAKE FLUID LEVEL WARNING SWITCH -

COMBINATION METER)

(a) Disconnect the combination meter connector and the

brake fluid level warning switch connector.
(b) Measure the resistance according to the value(s) in the
Comdination Meter table below.
(harness side connector) Resistance
Tester Connection Specified Condition
(C8-16) - (B1-1) Below 1 Ω
C8
(c) Measure the resistance according to the value(s) in the
8 table below.
Resistance
Brake Fluid Level Warning Switch
(harness side connector) Tester Connection Specified Condition
(C8-16) - Body ground 10 kΩ or higher

B1
NG REPAIR OR REPLACE HARNESS OR
PKB CONNECTOR
G026291E01

OK

REPAIR OR REPLACE COMBINATION METER ASSEMBLY

BC
 BC–94 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

TRAC OFF Indicator Light, TRAC OFF Switch Circuit

DESCRIPTION
The skid control ECU detects the TRAC control main switch ON/OFF signal and turns the TRAC OFF light
on/off. When the TRAC control switch is pressed, the TRAC control does not operate and the TRAC OFF
light comes on.

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BC
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–95

WIRING DIAGRAM

Skid Control ECU

ECM Wwith Actuator
24 5 9
LG IA2 G
ENG+ E5 S1 ENG+
30 4 23
L IA2 L-B S1 ENG-
ENG- E5
25 2 8
Y IA2 BR
TRC+ E5 S1 TRC+
31 3 22
G IA2 P
TRC- E5 S1 TRC-
J/B No.4 T6
10 19 TRAC off SW 8 43
W-B 4E 4E W-B LG IA2 B S1 CSW
1 2

Body ECU
Gateway ECU
29 4 11 4 18 21
O GR(*1) G3 MPD2 L(*1) GR B5 MPX2
MPX2 E6 IL2 G3 IL2
MPD1
C4 Center Cluster A

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Integration Panel J13
GR(*2) MPX- L(*2) J/C
MPX+ 5 A
12
18 T9 Transponder
MPX1 E6 R J/B No.3 W-B
Key Computer
Tilt and 22 7 R
Telescopic ECU 3H 3A MPX2
5
14 7 12
O(*3) O
MPX2 T4 3C 3C MPX1
4
5
MPX1 T4 O(*4) A8
A/C Amplifier
P22 7 3
GR(*3) 3E GR
Power Window Master Switch 3M MPX-
4
3 18 2
R R IB1 BR 3G BR
MPX1 7 C C 3K MPX+
3
J28
J/C Instrumant Panel J/B
Combination Meter
10 4 8 12 GAUGE No.2 7
MPX2 GR IB1 V GR
C9 C8 1G 1I
8
TRAC OFF
FL Block I14 Ignition Switch
1 AM2 2
W B-Y IA4 R V
7A 7
FL MAIN 1 2 7 AM2 IG2 6

Battery
*1: w/ LEXUS Navigation System IJ
*2: w/o LEXUS Navigation System
*1: w/ Power Tilt and Power TELESCOPIC
*2: w/o Power Tilt and Power TELESCOPIC
C125231E01
BC
HINT:
Start the inspection from step 1 when using the intelligent tester and start from step 2 when not using the
intelligent tester.
 BC–96 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

1 PERFORM ACTIVE TEST BY INTELLIGENT TESTER (TRAC OFF INDICATOR LIGHT)

(a) Connect the intelligent tester to the DLC3.

(b) Start the engine.
(c) Select the item "TRAC OFF LIGHT" in the ACTIVE TEST
and operate the TRAC OFF indicator light on the
intelligent tester.
Item Vehicle Condition / Test Details Diagnostic Note
VSC / TRAC OFF IND Turns VSC / TRAC OFF indicator ON / OFF Observe combination meter

(d) Check that "ON" and "OFF" of the TRAC OFF indicator
light are indicated on the combination meter when using
the intelligent tester.
OK:
Turn the TRAC OFF indicator light on or off in
accordance with the intelligent tester.
NG Go to step 4

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OK

2 INSPECT TRACTION CONTROL SWITCH

(a) Remove the TRAC control switch.

(b) Disconnect the TRAC control switch connector.
(c) Measure the resistance according to the value(s) in the
TRAC Control Switch table below.
T6 Resistance
Tester Connection Switch Condition Specified Condition
T6-2 (+) - T6-1 (E) Pushed in (ON) Below 1 Ω
T6-2 (+) - T6-1 (E) Released (OFF) 10 kΩ or higher
2 1

+ E NG REPLACE TRACTION CONTROL SWITCH

G026279E01

OK

3 CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - TRAC OFF SWITCH)

(a) Disconnect the skid control ECU connector and the

TRAC control switch connector.

BC
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–97

(b) Measure the resistance according to the value(s) in the

Skid Control ECU table below.
(harness side connector) S1
Resistance
Tester Connection Specified Condition
S1-43 (CSW) - T6-2 (+) Below 1 Ω
S1-43 (CSW) - Body ground 10 kΩ or higher

CSW T6-1 (E) - Body ground Below 1 Ω

TRAC Control Switch
(harness side connector) T6
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR

E + G026280E02

OK

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4 CHECK HARNESS AND CONNECTOR (ECM - SKID CONTROL ECU)

(a) Disconnect the skid control ECU connector S1 and ECM

connector E5.
(b) Measure the resistance according to the value(s) in the
Skid Control ECU S1 table below.
(harness side connector) Resistance
TRC+ ENG+
Tester Connection Specified Condition
S1-8 (TRC+) - E5-25 (TRC+) Below 1 Ω
S1-22 (TRC-) - E5-31 (TRC-) Below 1 Ω
S1-9 (ENG+) - E5-24 (ENG+) Below 1 Ω
S1-23 (ENG-) - E5-30 (ENG-) Below 1 Ω

(c) Measure the resistance according to the value(s) in the

TRC- ENG-
ECM table below
Resistance
E5 Tester Connection Specified Condition
S1-8 (TRC+) - Body ground 10 kΩ or higher
S1-22 (TRC-) - Body ground 10 kΩ or higher
S1-9 (ENG+) - Body ground 10 kΩ or higher
ENG+
S1-23 (ENG-) - Body ground 10 kΩ or higher
TRC+
TRC-
ENG- NG REPAIR OR REPLACE HARNESS OR
F045351E03 CONNECTOR

OK

5 INSPECT COMBINATION METER ASSEMBLY

(a) Check if the indicators (fuel, turn signal) other than BC

TRAC OFF indicator operate normally.
 BC–98 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

Result
Result Proceed to
Indicators OK A
Indicators NG B

B CHECK COMBINATION METER ASSEMBLY

(COMBINATION METER POWER SOURCE
CIRCUIT)

REPAIR OR REPLACE COMBINATION METER ASSEMBLY

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BC
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–99

Slip Indicator Light Circuit

DESCRIPTION
The SLIP indicator blinks during TRAC & VSC operation.

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BC
 BC–100 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

WIRING DIAGRAM

Skid Control ECU

ECM 24 5 9 with Actuator
LG G
ENG+ E5 IA2 S1 ENG+
30 4 23
ENG- E5 L L-B S1 ENG-
IA2
25 2 8
Y BR S1 TRC+
TRC+ E5 IA2
31 3 22
G P
TRC- E5 IA2 S1 TRC-
J/B No.4
Gateway ECU Body ECU
29 4 11 4 18 21
O GR(*1) G3 MPD2 L(*1) GR
MPX2 E6 IL2 G3 IL2 B5 MPX2
MPD1
C4 Center Cluster
Integration Panel
GR(*2) MPX- L(*2)
12 MPX+ 5
T9 Transponder

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Key Computer
18 R 22 7
MPX1 E6 3H 3A R
5 MPX2
Tilt and
Telescopic ECU J/B No.3
14 7 12
O(*3) O
MPX2 T4 3C 3C
4 MPX1

O(*4) A8
A/C Amplifier
5 7 3
GR(*3) 3M GR
MPX1 T4 3E 4 MPX-
P22
J28
Power Window Master Switch J/C
3 18 2
R R BR 3K 3G BR
MPX1 C IB1 MPX+
7 C 3

Combination Meter Instrumant Panel J/B

10 4 8 12 GAUGE No.2 7
GR V GR 1G 1I
MPX2 8 IB1 C9 C8
SLIP

FL Block I14 Ignition Switch

1 AM2 2
W B-Y IA4 R V
7A 7
FL MAIN 1 2 7 AM2 IG2 6

Battery
*1: w/ LEXUS Navigation System IJ
*2: w/o LEXUS Navigation System
*1: w/ Power Tilt and Power TELESCOPIC
*2: w/o Power Tilt and Power TELESCOPIC
BC G026401E01

HINT:
Start the inspection from step 1 when using the intelligent tester and start from step 2 when not using the
intelligent tester.
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–101

1 PERFORM ACTIVE TEST BY INTELLIGENT TESTER (SLIP INDICATOR LIGHT)

(a) Connect the intelligent tester to the DLC3.

(b) Start the engine.
(c) Select the item "SLIP INDI LIGHT" in the ACTIVE TEST
and operate the SLIP indicator light on the intelligent
tester.
Item Vehicle Condition / Test Details Diagnostic Note
SLIP INDI LIGHT Turns SLIP indicator light ON / OFF Observe combination meter

(d) Check that "ON" and "OFF" of the SLIP indicator light
are indicated on the combination meter when using the
intelligent tester.
OK:
Turn the SLIP indicator light on or off in
accordance with the intelligent tester.
NOTICE:
When replacing the ABS & TRACTION actuator

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assembly, perform zero point calibration (See page BC-
21).
NG Go to step 2

OK

REPLACE ABS AND TRACTION ACTUATOR

2 CHECK HARNESS AND CONNECTOR

(a) Disconnect the skid control ECU connector S1 and ECM

connector E5.

BC
 BC–102 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

(b) Measure the resistance according to the value(s) in the

Skid Control ECU S1 table below.
(harness side connector) Resistance
TRC+ ENG+
Tester Connection Specified Condition
S1-8 (TRC+) - E5-25 (TRC+) Below 1 Ω
S1-22 (TRC-) - E5-31 (TRC-) Below 1 Ω
S1-9 (ENG+) - E5-24 (ENG+) Below 1 Ω
S1-23 (ENG-) - E5-25 (ENG-) Below 1 Ω

(c) Measure the resistance according to the value(s) in the

TRC- ENG-
ECM table below.
Resistance
E5 Tester Connection Specified Condition
S1-8 (TRC+) - Body ground 10 kΩ or higher
S1-22 (TRC-) - Body ground 10 kΩ or higher
S1-9 (ENG+) - Body ground 10 kΩ or higher
ENG+
S1-23 (ENG-) - Body ground 10 kΩ or higher
TRC+
TRC-

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ENG- NG REPAIR OR REPLACE HARNESS OR
F045351E04 CONNECTOR

OK

3 INSPECT COMBINATION METER ASSEMBLY

(a) Check if the indicators (fuel, turn signal) other than SLIP
indicator operate normally.
Result
Result Proceed to
Indicators OK A
Indicators NG B

B CHECK COMBINATION METER ASSEMBLY

(COMBINATION METER POWER SOURCE
CIRCUIT)

REPAIR OR REPLACE COMBINATION METER ASSEMBLY

BC
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–103

Skid Control Buzzer Circuit

DESCRIPTION
The skid control buzzer sounds and SLIP indicator blinking during VSC operation.

WIRING DIAGRAM

V8 Skid Control ECU

VSC Warning Buzzer
with Actuator

1 O 30
BZ S1 BZ
Buzzer J9
J/C C J/C A
IG1 P P J8 J7 LG
2 A A

Instrument Panel J/B

W(*1) ECU-IG No.2
1 19

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B(*1)
1A 1F
5 3
19 10
G W-B
1I 2 1F
1
IG1 Relay I14
Ignition SW
AM1 4
O 2
1I
2 AM1 IG1 4

FL Block
1 INP-J/B
7C
2 1
1 ALT 1
7B 7A W
2 1

FL MAIN

Battery
II

*1: w/ Air Suspension System

*2: w/o Air Suspension System

G026396E01

HINT:
Start the inspection from step 1 when using the intelligent tester and start from step 2 when not using the
intelligent tester.
BC
1 PERFORM ACTIVE TEST BY INTELLIGENT TESTER (SKID CONTROL BUZZER)

(a) Connect the intelligent tester to the DLC3.

 BC–104 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

(b) Start the engine.

(c) Select the item "VSC/BR WARN BUZ" in the ACTIVE
TEST and operate the skid control buzzer on the
intelligent tester.
Item Vehicle Condition / Test Details Diagnostic Note
Turns VSC / BRAKE warning buzzer ON /
VSC / BR WARN BUZ Buzzer can be heard
OFF

(d) Check that skid control buzzer sounds by operating with

the intelligent tester.
OK:
The skid control buzzer sounds in accordance with
operation of the intelligent tester.
NG Go to step 2

OK

REPLACE ABS AND TRACTION ACTUATOR

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2 INSPECT SKID CONTROL BUZZER ASSEMBLY

(a) Disconnect the skid control buzzer connector.

(b) Apply a battery positive voltage to terminals 1 and 2 of
the skid control buzzer connector, and check that the
buzzer sounds.
(+) (-) OK:
The skid control buzzer sound should be heard.
Skid Control
Buzzer
NG REPLACE SKID CONTROL BUZZER
ASSEMBLY

1 2
F002192E10

OK

3 CHECK HARNESS AND CONNECTOR (SKID CONTROL BUZZER - SKID CONTROL ECU)

(a) Disconnect the skid control buzzer connector and the

skid control ECU connector.

BC
 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–105

(b) Measure the resistance according to the value(s) in the

Skid Control ECU with Actuator
(harness side connector) table below.
S1
Resistance
Tester Connection Specified Condition
S1-30 (BZ) - V8-1 (BZ) Below 1 Ω

(c) Measure the resistance according to the value(s) in the

BZ table below.
Skid Control Buzzer (harness side connector) Resistance
Tester Connection Specified Condition
V8 S1-30 (BZ) - Body ground 10 kΩ or higher

CAUTION:
When replacing the ABS & TRACTION actuator
BZ IG1 assembly, perform zero point calibration (See page BC-
G026280E03
5).
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR

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OK

REPLACE ABS AND TRACTION ACTUATOR

BC
 BC–106 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

TC and CG Terminal Circuit

DESCRIPTION
Connecting terminals Tc and CG of the DLC3 causes the ECU to display the DTC by flashing the ABS
warning light.

WIRING DIAGRAM

Skid Control ECU

ECM with Actuator

24 5 9
LG G
ENG+ E5 IA2 S1 ENG+
30 5 23
L L-B
ENG+ E5 IA2 S1 ENG+

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25 5 8
Y BR
TRC+ E5 IA2 S1 TRC+
31 5 22
G P
TRC+ E5 IA2 S1 TRC+

D1
DLC3
Instrument Panel J/B
20 12 6
TC BR BR TC
E5 1H 1M
13

J/B No.3
4 5
W-B W-B CG
3G 3K
4

II

G026397E01

BC 1 INSPECT DLC3 TERMINAL VOLTAGE

(a) Turn the ignition switch to the ON position.

 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–107

(b) Measure the voltage according to the value(s) in the

DLC3
TC table below.
Voltage
D1 Tester Connection Specified Condition
D1-13 (TC) - D1-4 (CG) 10 to 14 V

NG CHECK HARNESS AND CONNECTOR (DLC3

- ECM)
CG
B124401E24

OK

2 CHECK HARNESS AND CONNECTOR (ECM - SKID CONTROL ECU)

(a) Disconnect the skid control ECU connector S1 and ECM

connector E5.
(b) Measure the resistance according to the value(s) in the
Skid Control ECU S1 table below.

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(harness side connector) Resistance
TRC+ ENG+
Tester Connection Specified Condition
S1-8 (TRC+) - E5-25 (TRC+) Below 1 Ω
S1-22 (TRC-) - E5-31 (TRC-) Below 1 Ω
S1-9 (ENG+) - E5-24 (ENG+) Below 1 Ω
S1-23 (ENG-) - E5-30 (ENG-) Below 1 Ω

(c) Measure the resistance according to the value(s) in the

TRC- ENG-
ECM table below.
Resistance
E5 Tester Connection Specified Condition
S1-8 (TRC+) - Body ground 10 kΩ or higher
S1-22 (TRC-) - Body ground 10 kΩ or higher
S1-9 (ENG+) - Body ground 10 kΩ or higher
ENG+
S1-23 (ENG-) - Body ground 10 kΩ or higher
TRC+
TRC- NOTICE:
ENG-
When replacing the ABS & TRACTION actuator
F045351E05
assembly, preform zero point calibration (See page
BC-5).
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR

OK

REPLACE ABS AND TRACTION ACTUATOR

BC
 BRAKE CONTROL – BRAKE ACTUATOR BC–107

BRAKE ACTUATOR
BRAKE CONTROL

COMPONENTS

ABS & TRAC ACTUATOR

(SKID CONTROL ECU)

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BC
C118788E02
 BC–108 BRAKE CONTROL – BRAKE ACTUATOR

ON-VEHICLE INSPECTION
Intelligent Tester
1. CONNECT INTELLIGENT TESTER
(a) Connect the intelligent tester to the DLC3.
(b) Start the engine and run at idle.
(c) Select the ACTIVE TEST mode on the intelligent
tester.
HINT:
Please refer to the intelligent tester operator's
DLC3
G023361E01
manual for further details.
2. INSPECT ACTUATOR MOTOR OPERATION
(a) With the motor relay on, check the actuator motor
operation noise.
(b) Turn the motor relay off.
(c) Depress the brake pedal and hold it for
approximately 15 seconds. Check that the brake
pedal cannot be depressed.
(d) With the motor relay on, check that the pedal does
not pulsate.

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NOTICE:
Do not keep the motor relay turned on for more
than 5 seconds continuously. When operating it
continuously, set an interval of more than 20
seconds.
(e) Turn the motor relay off and release the brake
pedal.
3. INSPECT RIGHT FRONT WHEEL OPERATION
NOTICE:
Never turn on the solenoids in a manner different to
those described below.
(a) With the brake pedal depressed, perform the
following operations.
(b) Turn the SFRH and SFRR solenoids on
simultaneously, and check that the pedal cannot be
depressed.
NOTICE:
Do not keep the solenoid turned on for more
than 10 seconds continuously. When operating
it continuously, set an interval of more than 20
seconds.
(c) Turn the SFRH and SFRR solenoids off
simultaneously, and check that the pedal can be
depressed.
(d) Turn the motor relay on, and check that the pedal
returns.
NOTICE:
Do not keep the motor relay turned on for more
than 5 seconds continuously. When operating it
continuously, set an interval of more than 20
BC seconds.
(e) Turn the motor relay off and release the brake
pedal.
BRAKE CONTROL – BRAKE ACTUATOR BC–109

4. INSPECT OTHER WHEEL OPERATION

(a) Using the same procedure, check the solenoids of
the other wheels.
HINT:
Left front wheel:
SFLH, SFLR
Right rear wheel:
SRRH, SRRR
Left rear wheel:
SRLH, SRLR

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BC
 BC–108 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM

TS and CG Terminal Circuit

DESCRIPTION
In the sensor check mode, a malfunction of the speed sensor that cannot be detected when the vehicle is
stopped is detected while driving.
Transition to the sensor check mode can be performed by connecting terminals TS and CG of the DLC3
and turning the ignition switch from off to the ON position.

WIRING DIAGRAM

D1
Skid Control ECU
DLC3 with Actuator
J/B No.4

O 5 15 10 24
TS O Y
4D 4E IQ1 S1 TS
12

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5 4
W-B W-B
CG 3K 3G
4

II

G026398E01

1 INSPECT DLC3 TERMINAL VOLTAGE (TS TERMINAL)

(a) Turn the ignition switch to the ON position.

(b) Measure the voltage according to the value(s) in the
DLC3
TS table below.
Voltage
D1 Tester Connection Specified Condition
D1-12 (TS) - D1-4 (CG) 10 to 14 V

NG REPAIR OR REPLACE HARNESS OR

CONNECTOR
CG
B124401E25

OK
BC
2 CHECK HARNESS AND CONNECTOR (DLC3 - BODY GROUND)

(a) Disconnect the skid control ECU connector.

 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–109

(b) Measure the resistance according to the value(s) in the

Skid Control ECU with Actuator table below.
(harness side connector)
Resistance
S1 Tester Connection Specified Condition
S1-24 (TS) - D1-12 (TS) Below 1 Ω

(c) Measure the resistance according to the value(s) in the

table below.
TS Resistance
Tester Connection Specified Condition
S1-24 (TS) - Body ground 10 kΩ or higher
DLC3
TS NOTICE:
D1 When replacing the ABS & TRACTION actuator
assembly, perform zero point calibration (See page BC-
5).
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR

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I037493E04

OK

REPLACE ABS AND TRACTION ACTUATOR

BC
 BC–110 BRAKE CONTROL – BRAKE ACTUATOR

REMOVAL
1. DRAIN BRAKE FLUID
NOTICE:
Wash brake fluid off immediately if it adheres to any
painted surface.
2. DISCONNECT BATTERY NEGATIVE TERMINAL
3. REMOVE BRAKE ACTUATOR WITH BRACKET
(a) Using SST, disconnect the 6 brake tubes from the
actuator with bracket.

G023209E01

(b) Use tags or make a memo to identify the

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To RR W/C To FR W/C reconection points.
To RL W/C

To FL W/C

From M/C 2nd From M/C 1st

D030841E01

(c) Pull the lock lever upward.

(d) Disconnect the actuator connector.

(c)

(d)
D030845E01

BC
BRAKE CONTROL – BRAKE ACTUATOR BC–111

(e) Remove the 2 bolts, the nut and the actuator with
bracket.
NOTICE:
Be careful not to damage the brake tubes and
wire harness.
4. REMOVE BRAKE ACTUATOR
(a) Remove the 2 nuts and the brake actuator assembly
from the brake actuator bracket.
G023211E01

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BC
 BC–112 BRAKE CONTROL – FRONT SPEED SENSOR

FRONT SPEED SENSOR

BRAKE CONTROL

COMPONENTS

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FRONT SPEED SENSOR

BC
C118788E03
BRAKE CONTROL – FRONT SPEED SENSOR BC–113

REMOVAL
HINT:
Replace the RH side by using the same procedures as those
as those for the LH side.
1. REMOVE FRONT WHEEL
2. REMOVE FRONT FENDER SPLASH SHIELD SUB-
ASSEMBLY LH
3. REMOVE SPEED SENSOR FRONT LH
(a) Disconnect the speed sensor connector.
(b) Remove the 2 bolts and the clamp from the body
and the shock absorber assembly.

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F040299E01

(c) Remove the bolt and the speed sensor front.

NOTICE:
Prevent foreign matter from attaching to the
sensor tip.

F040300E01

BC
 BC–112 BRAKE CONTROL – BRAKE ACTUATOR

INSTALLATION
1. INSTALL BRAKE ACTUATOR
(a) Install the brake actuator assembly with the 2 nuts.
Torque: 5.4 N*m (55 kgf*cm, 48 in.*lbf)
2. INSTALL BRAKE ACTUATOR WITH BRACKET
(a) Install the actuator with bracket with the 3 bolts.
Torque: 19 N*m (194 kgf*cm, 14 ft.*lbf)
NOTICE:
Be careful not to damage the brake tubes and
wire harness.
(b) Connect the actuator connector.

G023211E01

(c) Using SST, connect each brake tube to correct

To RR W/C To FR W/C positions of the actuator with bracket, as shown in
To RL W/C the illustration.
Torque: 15 N*m (155 kgf*cm, 11 ft.*lbf)

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To FL W/C
3. FILL RESERVOIR WITH BRAKE FLUID
HINT:
See page BR-3.
4. BLEED BRAKE MASTER CYLINDER SUB-
ASSEMBLY
SST 09023-00101
HINT:
From M/C 2nd (RHD:) See page BR-3.
1st (LHD:)
From M/C1st (RHD:)
5. BLEED BRAKE LINE
2nd (LHD:)
D030841E04 HINT:
See page BR-3.
6. CHECK BRAKE FLUID LEAKAGE
7. CHECK FLUID LEVEL IN RESERVOIR
HINT:
See page BR-3.
8. CONNECT BATTERY NEGATIVE TERMINAL
9. PERFORM INITIALIZATION
HINT:
See page BC-1.
10. PERFORM YAW RATE SENSOR ZERO POINT
CALIBRATION
HINT:
See page BC-5.
11. CHECK BRAKE ACTUATOR WITH INTELLIGENT
TESTER
HINT:
BC See page BC-108.
 BC–114 BRAKE CONTROL – FRONT SPEED SENSOR

INSPECTION
1. INSPECT FRONT SPEED SENSOR
(a) Make sure that there is no looseness at the
connectors' locking part and connecting part of
connector.
(b) Disconnect the speed sensor connector.
(c) Measure the resistance according to the value(s) in
the table below.
Resistance:
LH
Tester Connection Specified Condition
S2-2 (FL+) - S2-1 (FL-) 0.6 to 2.5 kΩ

S2 S3 RH
Front Speed Sensor Tester Connection Specified Condition
F046886E02
S3-2 (FR+) - S3-1 (FR-) 0.6 to 2.5 kΩ

(d) Measure the resistance according to the value(s) in

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the table below.
Resistance:
LH
Tester Connection Specified Condition
S2-2 (FL+) - Body ground 10 kΩ or higher
S2-1 (FL-) - Body ground 10 kΩ or higher

RH
Tester Connection Specified Condition
S3-2 (FR+) - Body ground 10 kΩ or higher
S3-1 (FR-) - Body ground 10 kΩ or higher

NOTICE:
Check the speed sensor signal after
replacement (See page BC-16).
INSTALLATION
1. INSTALL SPEED SENSOR FRONT LH
(a) Install the speed sensor front with the bolt.
Torque: 8.0 N*m (82 kgf*cm, 71 in.*lbf)
NOTICE:
Prevent foreign matter from attaching to the
sensor tip.

F040300E02

BC
 BRAKE CONTROL – FRONT SPEED SENSOR BC–115

(b) Install the speed sensor front with the 2 bolts and
the clamp.
Torque: Bolt A
Bolt A 5.0 N*m (51 kgf*cm, 44 in.*lbf)
Bolt B
Bolt B 29 N*m (296 kgf*cm, 21 ft.*lbf)
NOTICE:
Clamp Do not twist the sensor wire when installing the
sensor.
F040299E02 (c) Connect the speed sensor connector.
2. INSTALL FRONT FENDER SPLASH SHIELD SUB-
ASSEMBLY LH
3. INSTALL FRONT WHEEL
Torque: 103 N*m (1,050 kgf*cm, 76 ft.*lbf)
4. CHECK ABS SPEED SENSOR SIGNAL
HINT:
(See page BC-21).

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 BRAKE CONTROL – REAR SPEED SENSOR (for 2WD) BC–115

REAR SPEED SENSOR (for 2WD)

BRAKE CONTROL

COMPONENTS

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2WD:

REAR SPEED SENSOR

BC
C118788E04
 BC–116 BRAKE CONTROL – REAR SPEED SENSOR (for 2WD)

REMOVAL
HINT:
Replace the RH side by using the same procedures as those
for the LH side.
1. REMOVE REAR WHEEL
2. DISCONNECT SKID CONTROL SENSOR WIRE
(a) Disconnect the connector from the skid control
sensor.
3. SEPARATE REAR DISC BRAKE CALIPER
ASSEMBLY LH (See page PB-20)
4. REMOVE REAR DISC (See page PB-20)
5. REMOVE REAR AXLE HUB & BEARING ASSEMBLY
LH (See page AH-22)
6. REMOVE SKID CONTROL SENSOR
(a) Mount the hub & bearing assembly on a soft jaw
vise.

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NOTICE:
Replace the hub & bearing assembly if it is
dropped or receives a strong shock.
(b) Using a pin punch and hammer, drive out the 2 pins
and remove the 2 attachments from SST(s).
(c) Using SST(s) and 2 bolts (Diameter: 12 mm, pitch:
1.5 mm), remove the skid control sensor from the
hub & bearing assembly.
SST 09520-00031 (09520-00040), 09521-00020,
09950-00020
NOTICE:
• If the sensor rotor is damaged, replace the
SST(s) hub & bearing assembly.
• Do not scratch the contacting surface of the
hub & bearing assembly and the skid control
Bolt sensor.

SST(s)

SST(s)
F040303E02

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 BRAKE CONTROL – REAR SPEED SENSOR (for 2WD) BC–117

INSPECTION
1. INSPECT REAR SPEED SENSOR
(a) Disconnect the skid control sensor connector.
(b) Measure the resistance according to the value(s) in
Rear Speed Sensor
the table below.
Resistance:
LH
Tester Connection Specified Condition
1
(S25-1) - (S25-2) 0.9 to 2.1 Ω
2
S25 S26
RH
Tester Connection Specified Condition
LH RH F041836E17
(S26-1) - (S26-2) 0.9 to 2.1 Ω

(c) Measure the resistance according to the value(s) in

the table below.
Resistance:
LH

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Tester Connection Specified Condition
(S25-1) - Body ground 10 kΩ or higher
(S25-2) - Body ground 10 kΩ or higher

RH
Tester Connection Specified Condition
(S25-1) - Body ground 10 kΩ or higher
(S25-2) - Body ground 10 kΩ or higher

NOTICE:
Check the speed sensor signal after
replacement (See page BC-16).
LH : RH :
INSTALLATION
1. INSTALL SKID CONTROL SENSOR
(a) Clean the contacting surface of the rear axle hub
and a assembly and a new skid control sensor.
NOTICE:
Make sure the sensor rotor is clean.
(b) Place the skid control sensor on the rear axle hub
so that the connector makes the lowest position
Connector under the on vehicle condition.
F045440E02

(c) Using SST(s) and a press, install the skid control

sensor onto the hub & bearing assembly.
SST(s) SST 09214-76011
NOTICE:
• Do not tap the skid control sensor directly
with a hammer.
• Check that the skid control sensor detection
part is clean.
• Press in the skid control sensor straight and BC
F045370E05 slowly.
2. INSTALL REAR AXLE HUB & BEARING ASSEMBLY
LH
 BC–118 BRAKE CONTROL – REAR SPEED SENSOR (for 2WD)

3. INSPECT BEARING BACKLASH (See page AH-15)

4. INSPECT AXLE HUB DEVIATION (See page AH-15)
5. INSTALL REAR DISC
(a) Aligning the matchmarks, install the rear disc.
HINT:
When replacing the rear disc with new one, select
the installation position where the rear disc has the
minimum runout.
6. INSTALL REAR DISC BRAKE CYLINDER ASSEMBLY
LH
HINT:
See page BR-36
7. CONNECT SKID CONTROL SENSOR WIRE
(a) Connect the connector to the skid control sensor.
8. INSTALL FRONT WHEEL
Torque: 103 N*m (1,050 kgf*cm, 76 ft.*lbf)
9. INSPECT AND ADJUST REAR WHEEL ALIGNMENT

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HINT:
See page SP-7
10. CHECK ABS SPEED SENSOR SIGNAL
HINT:
See page BC-21

BC
 BRAKE CONTROL – REAR SPEED SENSOR (for 4WD) BC–119

REAR SPEED SENSOR (for 4WD)

BRAKE CONTROL

COMPONENTS

4WD:

REAR SPEED SENSOR

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BC
C118788E05
 BC–120 BRAKE CONTROL – REAR SPEED SENSOR (for 4WD)

REMOVAL
HINT:
Replace the RH side by using the same procedures as those
for the LH side.
1. REMOVE REAR DOOR SCUFF PLATE LH
HINT:
See page SE-50
2. REMOVE REAR DOOR OPENING TRIM
WEATHERSTRIP LH
3. REMOVE DECK BOARD SUB-ASSEMBLY (See page
IR-7)
4. REMOVE REAR SEAT ASSEMBLY LH
HINT:
See page IR-7
5. REMOVE TONNEAU COVER ASSEMBLY
6. REMOVE DECK FLOOR BOX FRONT (See page IR-8)

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7. REMOVE DECK FLOOR BOX REAR (See page IR-8)
8. REMOVE DECK BOARD SUB-ASSEMBLY NO.2 (See
page IR-8)
9. REMOVE DECK BOARD SUB-ASSEMBLY NO.3 (See
page IR-8)
10. REMOVE BACK DOOR WEATHERSTRIP
11. REMOVE DECK SIDE TRIM BOX LH (See page IR-8)
12. REMOVE REAR FLOOR FINISH PLATE (See page IR-
8)
13. REMOVE REAR FLOOR FINISH SIDE PLATE LH (See
page IR-8)
14. REMOVE DECK SIDE TRIM COVER LH (See page IR-
8)
15. REMOVE REAR SEAT SIDE COVER LH (See page IR-
9)
16. REMOVE ROPE HOOK (See page IR-9)
17. REMOVE DECK TRIM SIDE PANEL ASSEMBLY LH
(See page IR-9)
18. REMOVE REAR WHEEL
19. REMOVE SPEED SENSOR REAR LH
(a) Disconnect the speed sensor connector.
NOTICE:
Be careful not to damage the wire harness.

BC

C095580E01
 BRAKE CONTROL – REAR SPEED SENSOR (for 4WD) BC–121

(b) Pull out the sensor wire harness with the with
grommet.
(d) NOTICE:
(c) Do not pull sensor wire.
(c) Remove the 2 bolts holding the sensor harness from
the body and the shock absorber assembly.
(c)

G023207E01

(d) Remove the bolt and the speed sensor rear.

NOTICE:
Prevent foreign matter from attaching to the
sensor tip.

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G023208E01

BC
 BC–122 BRAKE CONTROL – REAR SPEED SENSOR (for 4WD)

INSPECTION
1. INSPECT REAR SPEED SENSOR
(a) Remove the seat cushion and seatback .
(b) Disconnect the speed sensor connector S25 or S26.
(c) Measure the resistance according to the value(s) in
4WD:
the table below.
Speed Sensor S25 S26
Resistance:
2 1 2 1 LH
Tester Connection Specified Condition
S25-1 (RL+) - S25-2 (RL-) 0.9 to 1.3 Ω

RH
Tester Connection Specified Condition
F013045E05
S26-1 (RR+) - S26-2 (RR-) 0.9 to 1.3 Ω

(d) Measure the resistance according to the value(s) in

the table below.
Resistance:

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LH
Tester Connection Specified Condition
S25-1 (RL+) - Body ground
1 MΩ or higher
S25-2 (RL-) - Body ground

RH
Tester Connection Specified Condition
S26-1 (RR+) - Body ground
1 MΩ or higher
S26-2 (RR-) - Body ground

NOTICE:
Check the speed sensor signal after the
replacement. (See page BC-16)
INSTALLATION
1. INSTALL SPEED SENSOR REAR LH
(a) Install the speed sensor rear with the bolt.
Torque: 8.0 N*m (82 kgf*cm, 71 in.*lbf)
NOTICE:
Prevent foreign matter from attaching to the
sensor tip.

G023208E02

(b) Install the sensor harness clamps with the 2 bolts to

the body and the shock absorber assembly.
Torque: 5.0 N*m (51 kgf*cm, 44 in.*lbf)
NOTICE:
Do not twist the sensor wire when installing the
sensor.

BC
G023207E02
BRAKE CONTROL – REAR SPEED SENSOR (for 4WD) BC–123

(c) Push in the sensor wire harness with grommet.

NOTICE:
When grommet is set to body, pull the grommet
do not pull sensor wire.
(d) Connect the speed sensor connector.
2. INSTALL REAR WHEEL
Torque: 103 N*m (1,050 kgf*cm, 76 ft.*lbf)
3. INSTALL DECK TRIM SIDE PANEL ASSEMBLY LH
C095580E02
4. INSTALL ROPE HOOK
5. INSTALL REAR SEAT SIDE COVER LH
6. INSTALL DECK SIDE TRIM COVER LH
7. INSTALL REAR FLOOR FINISH SIDE PLATE LH
8. INSTALL REAR FLOOR FINISH PLATE
9. INSTALL DECK SIDE TRIM BOX LH
10. INSTALL BACK DOOR WEATHERSTRIP

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11. INSTALL DECK BOARD SUB-ASSEMBLY NO.3
12. INSTALL DECK BOARD SUB-ASSEMBLY NO.2
13. INSTALL DECK FLOOR BOX REAR
14. INSTALL DECK FLOOR BOX FRONT
15. INSTALL TONNEAU COVER ASSEMBLY
16. INSTALL REAR SEAT ASSEMBLY LH
HINT:
See page SE-55
17. INSTALL DECK BOARD SUB-ASSEMBLY
18. INSTALL REAR DOOR OPENING TRIM
WEATHERSTRIP LH
19. INSTALL REAR DOOR SCUFF PLATE LH
20. CHECK ABS SPEED SENSOR SIGNAL
HINT:
See page BC-21

BC
 BC–124 BRAKE CONTROL – YAW RATE AND ACCELERATION SENSOR

YAW RATE AND ACCELERATION SENSOR

BRAKE CONTROL

COMPONENTS

YAWRATE SENSOR
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(INCLUDE DECELERATION
SENSOR)

BC
C118788E06
BRAKE CONTROL – YAW RATE AND ACCELERATION SENSOR BC–125

REMOVAL
NOTICE:
• Don't use the dropped or damaged yawrate sensor.
• Free from the foreign matters between yawrate sensor
bracket and body.
• Make sure the sensor direction.
1. REMOVE FRONT SEAT ASSEMBLY RH
HINT:
See page SE-38
2. REMOVE FRONT DOOR SCUFF PLATE RH (See page
IR-6)
3. REMOVE REAR DOOR SCUFF PLATE RH
HINT:
See page SE-62
4. REMOVE FRONT DOOR OPENING TRIM
WEATHERSTRIP RH
5. REMOVE REAR DOOR OPENING TRIM

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WEATHERSTRIP RH
6. REMOVE CENTER PILLAR GARNISH LOWER RH
(See page IR-7)
7. REMOVE YAWRATE SENSOR PROTECTOR
(a) Remove the bolt and the sensor protector.
8. REMOVE YAWRATE SENSOR
(a) Disconnect the connector.

G023199E01

(b) Remove the 2 bolts and the yawrate sensor.

NOTICE:
Do not remove the yawrate sensor from the
yawrate sensor bracket.

G023200E01

BC
 BC–126 BRAKE CONTROL – YAW RATE AND ACCELERATION SENSOR

INSTALLATION
1. INSTALL YAWRATE SENSOR
(a) Install the yawrate sensor with the 2 bolts.
Torque: 14 N*m (143 kgf*cm, 10 ft.*lbf)
(b) Connect the connector.

G023200E01

2. INSTALL YAWRATE SENSOR PROTECTOR

(a) Install the sensor protector with the bolt.
3. INSTALL CENTER PILLAR GARNISH LOWER RH
4. INSTALL REAR DOOR OPENING TRIM
WEATHERSTRIP RH
5. INSTALL FRONT DOOR OPENING TRIM
WEATHERSTRIP RH

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G023199E01 6. INSTALL REAR DOOR SCUFF PLATE RH
7. INSTALL FRONT DOOR SCUFF PLATE RH
8. INSTALL FRONT SEAT ASSEMBLY RH
HINT:
See page SE-45
9. PERFORM YAWRATE SENSOR ZERO POINT
CALIBRATION
HINT:
See page BC-5

BC
 BRAKE CONTROL – STEERING ANGLE SENSOR BC–127

STEERING ANGLE SENSOR

BRAKE CONTROL

COMPONENTS

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STEERING ANGLE SENSOR

BC
C118788E07
 BC–128 BRAKE CONTROL – STEERING ANGLE SENSOR

REMOVAL
1. PRECAUTION
HINT:
See page RS-1
2. SEPARATE BATTERY NEGATIVE TERMINAL
HINT:
See page RS-1
3. PLACE FRONT WHEELS FACING STRAIGHT AHEAD
4. REMOVE STEERING PAD ASSEMBLY (See page RS-
388)
5. REMOVE STEERING WHEEL ASSEMBLY (for Manual
Tilt) (See page SR-40)
6. REMOVE STEERING WHEEL ASSEMBLY (for Power
Tilt and Power Telescopic) (See page SR-50)
7. REMOVE STEERING COLUMN COVER (for Manual
Tilt) (See page SR-40)

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8. REMOVE STEERING COLUMN COVER (for Power
Tilt and Power Telescopic) (See page SR-51)
9. REMOVE SPIRAL CABLE (See page RS-399)
10. REMOVE STEERING SENSOR
Claw (a) Release 6 claw fittings and remove the steering
sensor from the spiral cable.

Claw F045898E01

Claw
INSTALLATION
1. INSTALL STEERING SENSOR
(a) Install the steering sensor to the spiral cable.
NOTICE:
• Install the claw securely.
• Do not damage the claw.
2. ADJUST CENTER FRONT WHEEL
Claw 3. INSTALL SPIRAL CABLE (See page RS-399)
F045898E02

4. ADJUST SPIRAL CABLE

5. INSTALL STEERING WHEEL ASSEMBLY (for Manual
Tilt) (See page SR-45)
6. INSTALL STEERING WHEEL ASSEMBLY (for Power
Tilt and Power Telescopic) (See page SR-57)
BC
7. INSTALL STEERING PAD ASSEMBLY (See page RS-
388)
8. INSPECT STEERING WHEEL CENTER POINT
BRAKE CONTROL – STEERING ANGLE SENSOR BC–129

9. INSPECT STEERING PAD ASSEMBLY

10. INSPECT SRS WARNING LIGHT
HINT:
See page RS-25
11. INSPECT ABS WARNING LIGHT AND VSC WARNING
LIGHT
HINT:
See page BC-21

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BC