BC–116 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM
DTC C1267/67 Brake Pedal Load Sensing Switch
DESCRIPTION
The brake pedal load sensing switch is turned on when the brake pedal is depressed with force exceeding
a predetermined level.
The skid control ECU detects if the brake pedal is depressed or not via this circuit.
DTC No. DTC Detection Condition Trouble Area
C1267/67 When one of following conditions is met: • Brake pedal load sensing switch
1. An open or short in the brake pedal load • Brake pedal load sensing switch circuit
sensing switch continues for 0.3 seconds
or more.
2. Immediately after the ignition switch is
turned ON, the brake pedal load sensing
switch is ON and the stop light switch is
OFF for 10 seconds or more.
3. While the vehicle speed change from 0
mph (0 km/h) to 18 mph (30 km/h), the
condition that the brake pedal load
sensing switch remains ON occurs 5
times in succession.
4. With the stop light switch ON, the brake
pedal load sensing switch OFF, and the
master cylinder pressure 6 Mpa or more,
the deceleration is 0.4 G or more for 1
BC second or more.
5. With the stop light switch ON, the brake
pedal load sensing switch OFF, and the
master cylinder pressure 6 Mpa or more,
the vehicle speed is 0 mph (0 km/h) for 5
seconds or more.
WIRING DIAGRAM
Skid Control ECU
Brake Pedal Load Sensing Switch
FSW+
C126312E01
BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–117
INSPECTION PROCEDURE
NOTICE:
When replacing the brake actuator assembly, perform zero point calibration (see page BC-24).
HINT:
If DTC C1249/49 is output, repair it before repairing DTC C1267/67 based on the flowchart below.
1 READ VALUE OF INTELLIGENT TESTER (BRAKE PEDAL LOAD SENSING SWITCH)
(a) Check the DATA LIST for proper functioning of the brake
pedal load sensing switch.
Skid control ECU
Item (Display) Measurement Item / Range Normal Condition Diagnostic Note
(Display)
BRAKE PEDAL SW Brake pedal load sensing switch / ON: Depressed brake pedal -
ON or OFF OFF: Released brake pedal
OK:
ON (brake pedal is depressed) appears on the
screen.
OK Go to step 4
NG BC
2 INSPECT BRAKE PEDAL LOAD SENSING SWITCH
Brake Pedal Load
Brake Pedal Released (ON)
Sensing Switch
2 1
Brake Pedal Depressed (OFF)
Brake Pedal Support
C129075E02
NOTICE:
• Do not remove the brake pedal load sensing switch
from the brake pedal.
• When there is a malfunction in the brake pedal load
sensing switch, replace the brake pedal.
(a) Turn the ignition switch OFF.
BC–118 BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM
(b) Disconnect the brake pedal load sensing switch
connector.
(c) Measure the resistance of the switch.
Standard resistance
Tester Connection Condition Specified Condition
2-1 Brake pedal depressed (OFF) 0.95 to 1.05 kΩ
2-1 Brake pedal released (ON) 202.4 to 223.7 Ω
NG REPLACE BRAKE PEDAL SUPPORT
ASSEMBLY
OK
3 CHECK WIRE HARNESS (SKID CONTROL ECU - BRAKE PEDAL LOAD SENSING
SWITCH)
(a) Disconnect the A19 ECU connector.
Wire Harness Side (b) Measure the resistance of the wire harness side
connectors.
Skid Control ECU
Standard resistance
A19 Tester Connection Specified Condition
BC A19-7 (FSW+) - A2-2 Below 1 Ω
19-7 (FSW+) - Body ground 10 kΩ or higher
A2-1 - Body ground Below 1 Ω
FSW+ NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
Brake Pedal Load Sensing Switch
A2
C110685E06
OK
4 RECONFIRM DTC
(a) Clear the DTC (see page BC-47).
(b) Check if the same DTC is recorded (see page BC-47).
Result
Result Proceed to
DTC (C1267/67) is not output A
DTC (C1267/67) is output B
B REPLACE ABS AND TRACTION ACTUATOR
ASSEMBLY
BRAKE CONTROL – VEHICLE STABILITY CONTROL SYSTEM BC–119
USE SIMULATION METHOD TO CHECK
BC
