TO INDEX

F5 TRANSMISSION CONTROL

AUTOMATIC TRANSAXLE (A4B) ------------- F5 - 1

TURBINE REVOLUTION SENSOR,
OUTPUT REVOLUTION SENSOR -------- F5 - 1
REMOVAL AND INSTALLATION-------- F5 - 1
TRANSMISSION CONTROL
COMPUTER ------------------------------------- F5 - 2
REMOVAL AND INSTALLATION-------- F5 - 2
TRANSMISSION CONTROL SYSTEM -- F5 - 3
ARTICLES TO BE PREPARED---------- F5 - 3
HANDLING INSTRUCTIONS OF
CONTROL SYSTEM ----------------------- F5 - 3
HOW TO PROCEED WITH
TROUBLE SHOOTING -------------------- F5 - 4
CONFIRMATION, RECORD AND
ERASURE OF DIAGNOSIS CODE----- F5 - 7
SYMPTOM CONFIRMATION ------------ F5 - 9
SYSTEM WIRING DIAGRAM----------- F5 - 11
LOCATION OF COMPONENTS ------- F5 - 13
ARRANGEMENT OF VEHICLE
HARNESS SIDE CONNECTOR
TERMINALS -------------------------------- F5 - 15
ERASING OF LEARNING VALUE
AND INITIAL LEARNING ---------------- F5 - 15
HOW TO PROCEED WITH
TROUBLE SHOOTING------------------- F5 - 16
INQUIRY ------------------------------------- F5 - 18
FAIL-SAFE FUNCTION ------------------ F5 - 24
TROUBLE SHOOTING ACCORDING
TO DIAGNOSIS CODE ------------------ F5 - 27
TROUBLE SHOOTING ACCORDING
TO MALFUNCTION PHENOMENA--- F5 - 48
UNIT CHECK --------------------------------F5 - 67
ECU INPUT/OUTPUT SIGNAL
CHECK ----------------------------------------F5 - 73

F5
F5–1
Ä AUTOMATIC TRANSAXLE (A4B)
1 TURBINE REVOLUTION SENSOR, OUTPUT REVOLUTION SEN-
SOR
1-1 REMOVAL AND INSTALLATION
1-1-1 ARTICLES TO BE PREPARED
Instrument
Torque wrench

Lubricant,adhesive,others
ATF DexronOA

1-1-2 OPERATION BEFORE REMOVAL

1.Remove the battery and battery carrier.
1-1-3 REMOVAL AND INSTALLATION PROCEDURES
(1) Components

T:8.4&1.4 {85&14}
B
a
B
b
~c

~d

T11K5048S25

k:ATF application
~:Non-reusable parts
Unit N;m{kgf;cm}
(2) Removal and installation procedures
1 a Sensor, T/M revolution (Turbine revolution sensor)
2 b Sensor, T/M revolution (Output revolution sensor)
3 c Ring, O
4 d Ring, O

1-1-4 OPERATION AFTER INSTALLATION

1.Install the battery and battery carrier.
 F5–2
2 TRANSMISSION CONTROL COMPUTER
2-1 REMOVAL AND INSTALLATION
2-1-1 OPERATION BEFORE REMOVAL
1.Remove the lower instrument panel finish panel S/A and fuse box opening.
Refer to Page I2-23.

2.Remove the fuse block Ay.

Refer to Page I4-1.

2-1-2 REMOVAL AND INSTALLATION PROCEDURES

(1) Components

T11K5051S25

(2) Removal and installation procedures

1 a Computer Ay, transmission control

2-1-3 OPERATION AFTER INSTALLATION

1.Install the fuse block Ay.
Refer to Page I4-1.

2.Install the lower instrument panel finish panel S/A and fuse box opening.
Refer to Page I2-23.
F5–3
3 TRANSMISSION CONTROL SYSTEM
3-1 ARTICLES TO BE PREPARED
SST
Shape Part No. Part name

09842-97215-000 Sub-harness,transmission control computer check

09991-87404-000
Wire,engine control system inspection
(09991-87401-000)

09991-87403-000 Wire,diagnosis check

09990-97201-000 Sub-harness,A/T solenoid wire check

Instrument
Electrical Tester,Oscillo scope

3-2 HANDLING INSTRUCTIONS OF CONTROL SYSTEM

3-2-1 INSTRUCTIONS ON USE OF THIS SERVICE MANUAL
1.This service manual has been compiled in such a way that the manual may be used both in regions
where the type certification is implemented based on the EU exhaust emission approval, and other
regions.
2.Hence, with regard to the assignment, reading, erasing of diagnostic trouble codes and those steps of
checks, repairs and confirmation, the service manual contains the procedures for both cases: One is
a procedure that uses the diagnosis tester (DS-21/DS-@) or the OBD @ generic scan tool, and the other
is a procedure that does not use this tester or tool.
Therefore, the following instructions given below must be observed.
3.About Use of diagnosis tester (DS-21/DS-@) or OBD @ Generic Scan Tool
(1) Regions where type certification is implemented based on EC exhaust emission approval: Make
sure to use the diagnosis tester (DS-21/DS-@) or the OBD @ generic scan tool.
(2) Other regions: You may use or not use the diagnosis tester (DS-21/DS-@) or the OBD @ generic
scan tool. You may perform the operation, employing whichever method that will be easier to you.
 F5–4
4.Instructions to be followed concerning Diagnosis Trouble Codes
Diagnosis trouble codes, such as P0105/31 (Four-digit code/two-digit code) are posted additionally.
(1) Regions where type certification is implemented based on EC exhaust emission approval
Make sure to use only four-digit trouble codes (E.G.P0105) whose have been assigned accord-
ing to the ISO regulations.
(2) Other regions:
You may perform the operation using the four-digit code, employing the diagnosis tester (DS-
21/DS-@) or the OBD @ generic scan tool. Or you may perform the operation using the two-digit
codes (E.G.31), without the use of the tester or tool. You may perform the operation, employing
whichever method that will be easier to you.
Or you may perform the operation using the two-digit codes (E.G.31), without the use of the tester
or tool.
You may perform the operation, employing whichever method that will be easier to you.
NOTE
• The OBD @ generic scan tool means a scan tool complying with the ISO 14230 (KWP2000) format.
• In cases where the OBD @ generic scan tool is employed, not all diagnostic trouble codes (Four-
digit codes) can be read out. It should be noted that only those diagnostic trouble codes in which
"zero" follows after "P", for example, P0XXX, can be read out.
• The accuracy of the two-digit codes in diagnosing malfunctioning components is slightly inferior to
that of the four-digit codes.
• Hereinafter, those regions where the type certification is implemented based on the EU exhaust
emission approval, is referred to as the "EU specifications".

3-2-2 PRECAUTIONARY MEASURES DURING TROUBLE-SHOOTING

1.Before the diagnosis information memorized in the A/T ECU memory is confirmed, never disconnect
the connector from the A/TECU, the battery negative (-) terminal, the A/T ECU earth wire from the
engine, or the main fuse.
2.The diagnosis information memorized in the A/T ECU memory can be erased by using the diagnosis
tester (DS-21/DS-@) or the OBD-II generic scan tool in the same way as the check. Therefore, before
using the tester, read its instruction manual so as to understand the functions furnished and how to
use it.
3.Priority in trouble-shooting
(1) If the priority in trouble-shooting for a number of diagnostic trouble codes is given in the concerned
DTC flow chart, make sure to follow the priority.
3-3 HOW TO PROCEED WITH TROUBLE SHOOTING
3-3-1 GENERAL INFORMATION
1.The A/T control system of this vehicle are controlled by the A/T ECU. Furthermore, the vehicle is pro-
vided with the on-board diagnosis system.
Therefore, when any abnormality takes place in the input/output systems (Sensors, actuators, har-
nesses, connectors, etc.) of the engine control system, the A/T ECU memorizes the system concerned
and informs the driver by making the malfunction indicator lamp (MIL) illuminate or flash.
2.Also the malfunction is informed to the operator by means of the malfunction indicator lamp (MIL).
When trouble-shooting the engine, it is imperative for you to get the general idea of the onboard diag-
nostic system, and fully understand the precautionary measures in trouble-shooting, the items diag-
nostic system, and fully understand the precautionary measures in trouble-shooting, the items to be
observed and how to use testers.
3.Then, conduct the trouble-shooting following the flow chart that indicates the correct procedure for the
engine troubleshooting.
F5–5
(1) On-board diagnostic system of vehicles for EU specifications
1.The vehicles for Europe have the following functions that comply with the 1999/102/EC (Generally
called Euro-OBD) standards.
2.When the ignition switch is turned "ON", the malfunction indicator lamp (MIL) goes on. When no mal-
function has been detected, the lamp will go out after the engine has started. (Check for a blown bulb)
3.While the engine is running, if the EFI ECU detects any malfunction in the emission control system/com-
ponents that will affect the emissions from the vehicle, or in the power train control components, or if
any malfunction is detected in the ECU itself, the A/T ECU illuminates or flashes the MIL (Only when
misfire is detected which will damage the catalyst). Then, the A/T ECU memorizes the malfunction
area. (DTC by ISO15031-6/SAEJ2012)
4. If that malfunction will not occur in three successive running, the MIL is automatically turned off.
However, the DTC will be recorded in the A/T ECU memory.
5.It is possible to read out various data from the engine ECU by connecting the OBD @ generic scan tool
which complies with the ISO 14230 format or diagnosis tester (DS-21/DS-@) to the DLC of the vehicle.
You can perform trouble-shooting efficiently by checking these data (DTC, freeze-frame data, current
data, etc.).
6.The DTC is composed of the ISO standard code (Specified by ISO 15031-6) and the manufacturer's
designation code. The ISO standard code should be set Diagnostic trouble code
pursuant to the ISO. On the other hand, the manufactur- P 0 1 1 6 (Power train)
er's designation code can be freely set forth by the man- B:Body
C:Chassis
ufacturer within a specified limit. P:Power train Designation trouble
U:Net work code
7.Many DTC have a two trip detection logic which assures Vehicle’s system
0:Regulation
avoidance of wrong detection and functions only when a 1:Maker
malfunction is surely occurring. However, another diagno- 1 & 2:Fuel and air metering
3. :Ignition system or misfire
sis mode is provided, in which only a one-time final con- ..
7 & 8:Transmission
firmation test is necessary for a service mechanic to con- L21E3708ET10

firm that the malfunction has been completely remedied

after the repair.
8.When a malfunction is detected, the engine and running
conditions at that moment are memorized as a freeze-
frame data in the A/T ECU memory.
(2) On-board diagnostic system of vehicles for other
regions
1.When the ignition switch is turned "ON", the MIL goes on. When no malfunction has been detected, the
lamp will go out after the engine has started. (Check for a blown bulb)
While the engine is running, if the ECU detects any malfunction in the engine control system/compo-
nents, or if any malfunction is detected in the A/T ECU itself, the A/T ECU illuminates the MIL.
 F5–6
2.In addition to the illumination of the MIL, the correspond-
Abnormal
ing diagnostic trouble code (DTC) is memorized in the A/T
ECU memory. When the malfunction has been remedied Normal
or the system returns to its normal state, the MIL automat- Memorized

ically goes out. However, the DTC remains memorized in

the A/T ECU memory. Illuminated
3.It is possible to read out various data from the A/T ECU by Extinguished Extinguished
connecting the diagnosis tester (DS-21/DS-@) to the DLC 5 sec.
of the vehicle. You can perform trouble-shooting accu- L21E3711ET10
rately and efficiently by checking these data (DTC, freeze-
frame data, current data, oxygen sensor monitor data,
etc). Only when diagnosis tester (DS-21/DS-@) is used.
4.The DTC (Diagnostic trouble code) is set to a four-digit
code in accordance with ISO standard. Furthermore, the
conventional two-digit code is also provided. The four-
digit code can be read out by the diagnosis tester (DS-
21/DS-@). The two-digit code has been set forth by the
DMC itself. This code can be read by observing the flash-
ing pattern of the MIL.
5.When a malfunction is detected, the engine and running
conditions at that moment are memorized as a freeze-
frame data in the A/T ECU memory.
3-3-2 DLC, COMMON DESTINATIONS
1.The vehicle A/T ECU uses the ISO14230 (Euro-OBD) pro-
tocol. As regards the position, connector shape and pin BAT CANL ECU-T EFI-T REV
arrangement, the DLC is in accordance with the ISO
DLC
15031-3 (SAEJ1962) and has complied with the 1 2 3 4 5 6 7 8
ISO14230 format. The OBD @ serial data line (K line of 9 10 11 12 13 14 15 16
ISO14230) is used for the OBD @ generic scan tool or the
Body ground
diagnosis tester (DS-21/DS-@) in order to communicate ECU ground
with the ECU. CANH
OBD@serial data line
(K line of ISO 14230)
NOTE T11E6536ET10

• With the cable of the diagnosis tester (DS-21/DS-@)

connected to the DLC through the SST, turn "ON" the
Power indicator (switch section)
ignition switch. If the power indicator of the tester will
not go on, conduct the following checks and repair any
malfunctioning parts.
SST: 09991-87404-000

L21E3714ET10
F5–7
NOTE
• With the cable of the DS-@ diagnosis tester connected
to the DLC, turn ON the IG switch. If the tester does
not function, perform the following checks and repair
the faulty parts.
(1) Connect the diagnosis tester (DS-21/DS-@) to another
vehicle. Power supply button
(2) Turn "ON" the ignition switch.
T11E6574ET10

3-3-3 TROUBLE-SHOOTING PROCEDURE

(1) Discription
1.The A/T control system is equipped with diagnosis functions whose are capable of diagnosing mal-
functioning sections. These functions give important clues in trouble-shooting. The flow chart on the
next page shows how to proceed with trouble-shooting by using these diagnosis functions.
The flow chart shows how the diagnostic trouble code check can be used effectively. Moreover, when
its results are fully reviewed, you can determine whether you are going to do the trouble-shooting
according to diagnostic trouble codes or the trouble-shooting according to malfunctioning phenome-
na.
The diagnosis of this system is equipped with a battery back-up function (A function which supplies
power for diagnosis memory even if the ignition switch is turned "LOCK".)
NOTE
• When no diagnosis tester (DS-21/DS-@) or OBD-II generic scan tool is used, the DTC or freeze-
frame data in the flow chart can not be read out.

3-4 CONFIRMATION, RECORD AND ERASURE OF DIAGNOSIS CODE

3-4-1 CHECKING METHOD OF DIAGNOSIS
1.Prior to the check, check the malfunction indicator lamp (MIL), following the procedure given below.
2. Check of malfunction indicator lamp
(1) Ensure that the malfunction indicator lamp goes on when the ignition switch is turned "ON", but with
the engine not running.
(2) Ensure that the malfunction indicator lamp goes out when the engine starts. If the lamp remains
illuminated or is flashing, the diagnosis system is detecting a malfunction. Therefore, a DTC is
memorized in the A/T ECU. If no DTC is memorized in the A/T ECU, perform the trouble-shooting
for the malfunction indicator lamp circuit.
(1) Check of DTC, using DS-21 diagnosis tester:
1.Prepare the DS-21 diagnosis tester.
2.Connect the DS-21 diagnosis tester to the DLC located at
SST
the lower section of the instrument panel on the driver's
seat side. At this time, the DS-21 tester should be con-
nected to the DLC with the following SST interposed.
SST: 09991-87404-000
NOTE
• When DS-21 diagnosis tester is used, refer the instruc- T11E6537T10

tion manual for tester.

 F5–8
(2) Check of DTC, using DS-@ diagnosis tester or OBD @
generic scan tool
1.Prepare the DS-@ diagnosis tester or OBD @ generic scan
tool.
2.Connect the DS-@ diagnosis tester or the OBD @ generic
tester directly to the DLC located at the lower section of
the instrument panel on the driver's seat side.
NOTE
• When DS-@ diagnosis tester or OBD-@ generic scan T11E6573T10

tool is used, refer the instruction manual for each

tester.
3-4-2 CANCELING METHOD OF DIAGNOSIS
1.The DTC and freeze-frame data can be erased through the following methods.
(1) The diagnosis tester (DS-21/DS-@) or OBD @ generic scan tool is used to erase the DTC. (For the
operating procedure, refer to the instruction manual.)
(2) The power supply to the A/T ECU is shut off to erase the DTC without using the diagnosis tester
(DS-21/DS-@) or OBD @ generic scan tool. (Disconnect the battery negative (-) terminal or detach
the EFI fuse.)
(1) When DS-21 diagnosis is used:
1.In the same way as the check of DTC, connect the diag-
SST
nosis tester (DS-21/DS-@) to the DLC with the following
SST interposed.
SST: 09991-87404-000
NOTE
• When DS-21 diagnosis tester is used, refer the instruc-
tion manual for tester. T11E6537T10

(2) When DS-21 diagnosis tester or OBD @ generic scan

tool is used:
1.In the same way as the check of DTC, connect the DS-@
diagnosis tester or the OBD @ generic scan tool directly to
the DLC.
NOTE
• When DS-@ diagnosis tester or OBD @ generic scan
tool is used, refer the instruction manual for each T11E6573T10

tester.

(3) When diagnosis tester (DS-21/DS-@) or OBD @ generic scan tool is not used:
1.Erasure by disconnecting EFI fuse
To erase the diagnostic trouble codes (DTC) memorized in the ECU after malfunctions have been
repaired, disconnect the ECU-B fuse from the relay block for at least 30 seconds with the ignition
switch turned "LOCK". (When ambient temperature is about 20°C.)
NOTE
• It is possible to complete this erasing for approximately 60 seconds. In some cases, however, it
may take longer. Furthermore, the erasing can be made by disconnecting the circuit, such as the
battery power supply and fusible link. In cases where the battery negative (-) terminal is to be dis-
connected, record the radio channels in advance. After completion of the operation, set the radio
channels the same as before.
F5–9
3-5 SYMPTOM CONFIRMATION
3-5-1 CONFIRMATION OF REPRODUCTION OF MALFUNCTIONING PHENOMENA
1.In the course of trouble-shooting, the operator can not pinpoint the cause for the malfunction unless he
confirms the phenomenon. For this purpose, it is indispensable to reproduce the malfunctioning phe-
nomenon by creating conditions and environments that are similar to those customer.
2.As for phenomena whose can not be reproduced easily, it is necessary to produce running conditions
that are similar to those when the malfunction occurred (Road surface condition, weather condition,
driving condition). For this end, it is of great importance to try to reproduce the conditions that are sim-
ilar to those when the malfunction occurred (Road surface condition, weather relays by hand), heat
(applying hot air) and water (Applying moisture).
3.Vibration, heat or moisture can constitute causes for malfunction that are difficult to reproduce.
4.Therefore, with the vehicle in a stationary state, you can perform the following malfunction reproduc-
tion simulation tests given below.
Moreover, if you presume a section (Part) which can cause a malfunction and connect a tester, etc. to
that section so as to confirm the malfunctioning phenomenon, you can also achieve a function to that
section so as to confirm the malfunctioning phenomenon, you can also achieve a function evaluation
of that section (Part).
(1) Malfunction reproduction simulation test methods
1 Vibration method:
1.When vibration is thought to be the main cause
(1) Connector
Lightly shake the connector vertically and laterally.

L21E3726ET10

(2) Wire harness

Lightly shake the wire harness vertically and laterally.
The points to be checked are connector joints, the
vibrating point and the section where the wire har-
ness is passing through the body.

Shake lightly
L21E3727ET10

(3) Parts, sensors

With your finger, apply light vibrations to a part of the
sensor which is presumed to be the cause for the
malfunction. Check to see if the malfunction is repro-
duced.
NOTE
• Be careful not to apply too strong vibration to a relay,
for it can cause an open wire in the relay.
T11E6541T10
 F5–10
2 Cool/hot method: Cooling agent
Dryer
1.When a suspected section is likely causing the malfunc- Malfunction
tion when it is cold or hot.
(1) Heat a component which is presumed to be causing
the malfunction by using a dryer or the like. Check to
see if the malfunction occurs.
CAUTION
• Do not heat the section beyond 60°C. (Temperature
limit to assure that no damage be made to the compo- L21E3729ET10

nent.)
• Do not directly heat the parts inside the ECU.
3 Water applying method:
1.When the malfunction is believed to occur on rainy days or under humid conditions. Apply water to the
vehicle. Check to see if the malfunction occurs.
NOTE
• Never apply water directly to the engine compartment. By applying water to the front of the radia-
tor, you can indirectly change the temperature and humidity.
• Never apply water directly to the electronic parts.
• If rain leaks into the vehicle compartment, rain may get into the inside of the ECU through the wire
harnesses. If the vehicle has experienced any rain leakage before, utmost attention must be paid
in respect to this point.

3-5-2 RECHECK AND MAKING RECORD OF DTC/FREEZE-FRAME DATA

1.By checking the DTC/freeze-frame data after confirming the reproduction of the malfunctioning phe-
nomenon, it is possible to judge whether the system related to the DTC that was indicated before con-
firmation of the reproduction is now functioning properly or not. Then, you are to proceed to one of the
following three steps.
(1) When a DTC was indicated at the time of checking the DTC and the same DTC is indicated after
the confirmation of reproduction of the malfunction, it indicates that the malfunction is still per-
sisting in the diagnosis circuit. Proceed to the trouble-shooting according codes.
(2) When no abnormal code is indicated, although the occurrence of malfunction was observed dur-
ing the confirmation of reproduction of malfunction, a malfunction other than those related to the
diagnosis system is likely taking place. Proceed to the trouble-shooting according to malfunc-
tioning phenomena.
(3) When no malfunction is observed during the confirmation of reproduction of malfunction, and the
normal code is indicated at the check of the DTC, it is presumed that an abnormality, such as poor
contacts at the harnesses and connectors, occurred in the past, but now they are functioning
properly. Check the harnesses and connectors of those systems related to the DTC that was indi-
cated before the confirmation of reproduction of the malfunctioning phenomenon.
F5–11
3-6 SYSTEM WIRING DIAGRAM

Neutral start switch Solenoid No.1

C15 P B1+ C6

B7 R B1- C5
Solenoid No.2
C24 N C2+ C4

C17 D C2- C3
Solenoid No.3
C16 2 C3B2+ C2

C25 L C3B2- C1
Duty solenoid
Back lamp
LUCC C23

LUC solenoid
C9 VBTB
Transmission control computer
Turbine LUCR C11
revolution C10 RTBN
sensor C20 ETBN Switch solenoid

SOLR C12
Output C7 VBOP
revolution C8 ROPT
sensor O/D OFF switch
C18 EOPT O/D1 B22

B24 E1
B6 E01
STR B16 To starter relay magnetic
B5 E02
Fluid temperature
sensor To EFI ECU
LCN1 B19
C14 OTMP To meter
HCN1 B9 (CAN comunication)
C13 ETMP
IG switch REG1 B8 EFI ECU
IG1 IG2 ECU IG2
B3 +B1 ABS equipped vehicles
CANH B10
To ABS ECU
(CAN comunication)
CANL B20
AM2

ECU B SIO1 B17 DLC

B2 BAT1
B1 BAT2
F/L

Battery

T11K5524ES44
 F5–12
Transmission control computer terminal name

10 9 8 7 6 5 4 3 2 1 6 5 4 3 2 1 6 5 4 3 2 1
22 21 20 19 18 17 16 15 14 13 12 11 16 15 14 13 12 11 10 9 8 7 17 16 15 14 13 12 11 10 9 8 7
30 29 28 27 26 25 24 23 24 23 22 21 20 19 18 17 26 25 24 23 22 21 20 19 18

A B C

T11K5006S10

1.Connectors A
This connector is not used.
2.Connectors B
Terminal Terminal Terminal Terminal
Terminal name Terminal name
No. code No. code
1 BAT2 Backup power supply 13 ( (
2 BAT1 Backup power supply 14 ( (
3 'B1 ECU power supply 15 ( (
4 ( ( 16 STR Starter relay output circuit
5 E02 A/T power system ground 17 SIO1 Diagnostic tester communication
6 E01 A/T power system ground 18 ( (

7 R Neutral start switch (R) 19 LCN1 CAN communication LO (1)

8 REG1 Engine revolution speed 20 CANL CAN communication LO (2)

9 HCN1 CAN communication HI (1) 21 ( (

10 CANH CAN communication HI (2) 22 O/D1 O/D OFF switch

11 ( ( 23 ( (
12 ( ( 24 E1 Sensor ground

3.Connectors C
Termi-
Terminal Terminal Terminal
nal Terminal name Terminal name
No. No. code
code
C3B2
1 Solenoid No.3 (() 14 OTMP Fluid temperature sensor
(
C3B2
2 Solenoid No.3 (') 15 P Neutral start switch (P)
'
3 C2( Solenoid No.2 (() 16 2 Neutral start switch (2)
4 C2' Solenoid No.2 (') 17 D Neutral start switch (D)
5 B1( Solenoid No.1 (() 18 EOPT Output revolution sensor ground
6 B1' Solenoid No.1 (') 19 ( (
7 VBOP Output revolution sensor power supply 20 ETBN Turbine revolution sensor ground
8 ROPT Output revolution sensor 21 ( (
9 VBTB Turbine revolution sensor power supply 22 ( (
10 RTBN Turbine revolution sensor 23 LUCC Duty solenoid
11 LUCR LUC solenoid 24 N Neutral start switch (N)
12 SOLR Switch solenoid 25 L Neutral start switch (L)
13 ETMP Fluid temperature sensor ground 26 ( (
F5–13
3-7 LOCATION OF COMPONENTS
3-7-1 WHOLE VEHICLE

Combination meter

O/D OFF switch

DLC

ABS ECU

Transmission control
computer

Turbine revolution
sensor
Neutral start switch
Switch solenoid
Engine control computer
LUC solenoid
Output revolution sensor
Duty solenoid
Solenoid No.2 Fluid temperature sensor
Solenoid No.1 Solenoid No.3

T11K5540ES44
 F5–14
3-7-2 VALVE BODY SECTION

Switch solenoid

LUC solenoid

Solenoid wire

Duty solenoid

Solenoid No.2

Fluid temperature sensor Solenoid No.1

Solenoid No.3

T11K1015ES25
F5–15
3-8 ARRANGEMENT OF VEHICLE HARNESS SIDE CONNECTOR TERMINALS

1 2 3 4 5 6 1 2 3 4 5 6
7 8 9 10 11 12 13 14 15 16 17 7 8 9 10 11 12 13 14 15 16
18 19 20 21 22 23 24 25 26 17 18 19 20 21 22 23 24

C B
Transmission control computer
ATNE CANL CANH

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69
70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106
107108 109110 111112 113114 115 116117 118119 120 121122 123 124 125126 127 128 129130 131132 133 134135

Engine control computer

1 2 3 4 5 6 7 8 9 10 11 12 13

14 15 16 17 18 19 20 21 22 23 24 25 26

LUCC LUCR ABS control computer

C3B2' SOLR R 2 DP
1 2 3 4 OTMP V12 E2 V12 E2 1 2 3 4 1 2
C2' 5 6 7 8 1 2 3 1 2 3 5 6 7 8
9 10 11 12 B1' 3 4
RTBN ROPT N E RB L O/D' O/D(
C2( E
C3B2( B1(
Solenoid wire Turbine revolution Output revolution Nuutral start O/D OFFswitch
sensor sensor switch

T11K5523ES25

For the terminal names of transmission control computer vehicle harness side connectors, refer to the system wiring diagram.
3-9 ERASING OF LEARNING VALUE AND INITIAL LEARNING
When the automatic transaxle Ay, valve body Ay (Including the solenoid valve) have been replaced, it is
necessary to erase the transmission control computer learning values and to perform the initial learning,
following the procedure given below.
1.Short the ECU-T terminal and E terminal inside the DLC.
Refer to Page F5-22.

2.Within three seconds after turning ON the IG SW(Not starting the engine), depress the brake pedal and
keep depressing it. (Until the following operations 3 and 4 are completed).
3.Move the shift lever P!R!P within one second. (The time required for P!R!P is within one second.)
4.Repeat the operation of Item 3 above eight times. (The O/D OFF lamp quickly flashes for 2.5 seconds
as a signal telling the completion of erasing operation.)
5.Release the short-circuit of the ECU-T terminal and E terminal inside the DLC.
6.Turn "LOCK" the IG SW and turn it "ON" again.
7.Fully warm up the engine and transmission.
NOTE
• The initial learning starts when the transmission oil temperature rises above 50°C.

8.Perform the initial learning (Urban running of about 15 minutes) (Go through the driving at various
gears and kickdowns.)
 F5–16
3-10 HOW TO PROCEED WITH TROUBLE SHOOTING
This system is equipped with a diagnosis function that diagnoses the defective sections and this provides
important clues in performing trouble shooting.

è1. Bringing of malfunctioning vehicle in garage

çGo to step è2.

è2. INQUIRY WITH CUSTOMER

1.Thoroughly obtain information from the customer concerning the conditions, environment and phe-
nomena in which the malfunction took place.
çGo to step è3.

è3. Confirm the normal indication of the diagnosis code of LCD inside the meter
1.Using the SST, short-circuit between the DLC4 (ECU-T) and the 13(E).
SST: 09991-87403-000

2.Confirm that the LCD inside the meter indicates the diagnosis codes (Including the normal code).
SPECIFIED VALUE: Indicates.

NOTE
• Codes other than the CAN-related codes are permissible.

çIf it is OK, go to step è4.

çIf NG, conduct the following checks given below concerning the meter. If no problems are found,
replace the meter.
(1) Check the harnesses between the meter and the DLC as well as between the DLC and the body
ground.
(2) Check the power supply system and ground system of the combination meter.
(3) Check the power supply system and ground system of the meter.

è4. Confirm the diagnosis code of LCD inside the meter (CAN-related).
1.Confirm that the LCD inside the meter will not indicate the CAN-related diagnosis codes (Codes 0051
through 0053).
SPECIFIED VALUE: Will not indicate codes 0051 through 0053.

çIf it is OK, go to step è5.

çIf NG, refer to the item of the CAN communication system.
Refer to Page L2-1.

è5. Confirmation and recording of diagnosis code

1.Using the SST, short-circuit between the DLC4 (ECU-T) and the 13(E).
SST: 09991-87403-000

çGo to step è6.

è6. Erasing of diagnosis codes

1.Erase the diagnosis codes.
NOTE
• Before erasing the codes, record the codes that are being outputted.

çGo to step è7.

F5–17
è7.Reproduction and confirmation of malfunction phenomenon
1.Confirm the malfunctioning phenomenon and reproduce the malfunctioning situation.
SPECIFIED VALUE: The malfunctioning phenomenon has been reproduced.

çIf it is OK, go to step è8.

çIf NG, presume the cause of malfunction, based on the diagnosis by interview to the customer or the
trouble-shooting according to malfunctioning phenomena.

è8. Reconfirmation of diagnosis code

1.Reconfirm the diagnosis codes.
SPECIFIED VALUE: The abnormality code is outputted again.

çIf it is OK, go to step è9.

çIf it is OK, go to step è10.

è9. Trouble-shooting according to diagnosis code

1.Perform the check concerning the diagnosis codes that are currently outputted.
Refer to Page F5-29.

çAfter completion of the check, proceed to è11.

è10. Trouble-shooting according to malfunction phenomenon.

1.Perform the check for the malfunctioning phenomena.
Refer to Page F5-50.

çAfter completion of the check, proceed to è11.

è11. Confirmation test

1.Checks whether the problem that the customer described has been corrected and the operation is
back to normal.
çIf OK, finish the trouble shooting.
çIf NG, return to the è3 and redo the check.
 F5–18
3-11 INQUIRY
In an effort to remove causes for malfunction from the vehicle concerned, it is impossible to determine the
cause without confirming the malfunction phenomenon. If the phenomenon is not confirmed, the vehicle
may not be able to return to the normal conditions even if you continue your work. The diagnosis through
interview is to collect information from the customer before confirming the malfunction phenomena. The
diagnosis through interview provides very important clues in reproducing malfunction phenomena.
Since the information obtained by the diagnosis through interview is referred to during the trouble shoot-
ing, it is imperative to make an inquiry of the customer, centering on the items related to the malfunction,
instead of simply asking general questions.
Please make use of the information on the next page, as it provides an example of the diagnosis by inter-
view.
F5–19
3-11-1 DIAGNOSIS BY INTERVIEW SHEET FOR AUTOMATIC TRANSMISSION SYSTEM

Day Month
Checked by Check date
(Day of week)
Customer information
Gender of customer
Age [Approx. ] Occupation [ ]
Name of (Male, female)
customer Area where vehi- Urban, suburb, seashore, Parking Outdoor,
Mr./Ms. cle is mainly used mountain, others place indoor

Details of vehicle
Date when
Date when No,
vehicle was
Day Month malfunction Day Month Repair history Yes (How many
brought to
took place times? )
workshop
(Day of week) (Day of week)
Registration
Frame No. Day Month Year Vehicle model
date
Engine type Transmission Electronically controlled 4A/T Driving 2WD;4WD
Running dis-
km Equipment Tire [ ]; Wheel [Steel ; Aluminum]
tance
 F5–20
Contents of diagnosis by interview
Symptom Specific contents
Engine Starter does not turn.m H range G range
Poor starting Starter turns.m I range D range E range M range L range F range
Does not run forwardm D range E range M range L range F range
Does not run backwardm I range
Unable to run
At time of G!D(E);I, engine G ! D(E) range G ! I range
stallsm
Clutch slips.m 1st gear 2nd gear 3rd gear 4th gear Reverse
Abnormal
At H;G range, vehicle H range Grange
running
moves.m
No gear shiftingm 1st gear fixed 3rd gear fixed 1st #3rd gear shifting only takes
Improper gear place.
shifting 1st!2nd gear 2nd!3rd gear 3rd!4th gear Starts off at 2nd
Shift points deviatedm gear Jumps from 1st!3rd gear
Large gear shifting shock G!D(E) G!I 1st!2nd gear 2nd!1st gear 2nd!3rd gear
Gear shift Long time lag at time of m 3rd!2nd gear 3rd!4th gear 4th !3rd gear
shock gear shifting
Time lag Engine races during gear shift- 2nd!3rd gear 3rd!4th gear
ing.m

Others

Since when Since new vehicle Recently(Since about year month)

malfunction
started?
Frequency of Always Under certain condition( )
malfunction Sometimes( )
Weather con- At all times
ditions
Weat
her Fine Cloudy Rainy Snow Other( )
Tem
pera-
ture Temperature(Approx. ‚ ) ( Spring Summer Fall Winter)
Urban area Suburb Highway Dry road Wet road Snowy road Frozen road
Road
Hill ( Uphill Downhill)
Has nothing to do with malfunction During running
Driving condi- During starting Vehicle speed km/h
tions During racing Engine revolution rpm
During curving( Right curve Left curve) Engine During cold During hot

Other condi-
tions

Warning lamp conditions Illuminated at all times Illuminated sometimes Not illuminated
During
Normal Abnormality code [ ]
Diagnosis indication (Terminal T short checking
circuited) 2nd time Normal Abnormality code [ ]
th time Normal Abnormality code [ ]
F5–21
When the diagnosis code is indicated, confirm whether the malfunction took place sometimes in the sys-
tem or is still persisting. Also it is necessary to check any relation between the code and the reproduced
malfunction. For this purpose, the diagnosis code should be indicated twice, namely before and after the
confirmation of the phenomena.
3-11-2 CHECKING METHOD OF DIAGNOSIS
1.With the vehicle in a stationary state, short-circuit the ECU-T terminal and the E terminal inside the DLC,
using the SST.
SST: 09991-87404-000
SST: 09991-87403-000

2.Turn "ON" the IG SW and read out the number of flashing of the O/D OFF lamp.

ECU-T

Shorted Shorted
ECU-T terminal ECU-T terminal
Open Open

0.25sec.

Illuminated Illuminated
Normal time (Flashing) Normal time
Extinguished Extinguished
0.25sec.
O/D OFF lamp O/D OFF lamp
0.5sec. 0.5sec. 0.5sec. 0.5sec.

Illuminated ON
During abnormal operation During abnormal
(No.31 and 41) Extinguished operation
OFF

4.0sec. 1.5sec. 0.5sec. 4.0sec. 1.5sec.

0.5sec. 2.5sec. 1.5sec.

Diagnosis code-2
Diagnosis code-1 (Wrovided a warning function)
T11K5005ES25

CAUTION
• If the short-circuiting is made for wrong connectors, it may cause malfunction. Be very careful not
to select wrong terminals
• When the check terminals are short-circuited, the warning lamps for systems other than the elec-
tronic controlled A/T system may flash. However, this does not mean that the systems are malfunc-
tioning.
 F5–22
3-11-3 CANCELING METHOD OF DIAGNOSIS
1.With the IG SW turned "LOCK", detach the ECU-B fuse located in the relay box inside the engine com-
partment at lease 30 seconds. (Normal temperature)
CAUTION
• When other backup circuit and ground circuit are disconnected, the diagnosis is cancelled
Example: Battery power supply, fusible link.
• There are cases where the time required for erasing the diagnosis becomes longer during cold
time.

3-11-4 CONTENTS OF DIAGNOSIS

Codes specified by ISO/SAE
DTC No. Diagnosis contents Malfunction Warning indica- Code memory MIL (Malfunction
evaluation tion (Provided:<, indicator lamp)
method (Provided:<, Not provided:=)
Not provided:=)
P0705/56 Neutral start switch multiple-input ( < < (
P0710/38 Oil temperature sensor circuit open wire 1 trip < < <
or short-circuit
P0711/38 Abnormal oil temperature sensor charac- 2 trip < < <
teristics
P0715/37 No turbine revolution input 2 trip < < <
P0720/42 No output revolution input 2 trip < < <
P0725/86 No engine revolution input 2 trip < < <
P0753/61 Solenoid No.1 circuit open wire and 1 trip < < <
short-circuit
P0758/62 Solenoid No.2 circuit open wire and 1 trip < < <
short-circuit
P0763/63 Solenoid No.3 circuit open wire and 1 trip < < <
short-circuit
P0768/64 Duty solenoid circuit open wire and 1 trip < < <
short-circuit
P0773/65 LUC solenoid circuit open wire and 1 trip < < <
short-circuit

NOTE
• 1 trip: 1 trip detection logic
• 2 trip: 2 trip detection logic
• MIL: Malfunction indicator lamp
When the "O" mark is shown in the MIL column, the lamp will go on for that DTC number, but
when the "(" mark is shown, the lamp will not go on for that DTC No. Therefore, it is possible to
read out the DTC No. by using the diagnosis tester (DS-21/DS-@). As for the DTC No. bearing the
mark, the MIL will go on except the EU specifications.
F5–23
Codes specified by DMC
DTC No. Diagnosis contents Malfunction Warning indica- Code memory MIL (Malfunction
evaluation tion (Provided:<, indicator lamp)
method (Provided:<, Not provided:=)
Not provided:=)
P0705/55 No neutral start switch input ( = = (
P1703/72 Lockup revolution not matched 2 trip < < <
P1706/31 Abnormal engine torque ( < = (
P1711/41 EFI throttle sensor malfunctioning ( < = (
P1730/21 Abnormal battery power supply 2 trip < < <
P1731/22 Abnormal sensor system power supply 2 trip < < <
P1780/66 Switch solenoid circuit open wire and 1 trip < < <
short-circuit
U0100/82 Abnormal communication receiving with 1 trip < < <
EFI
U1001/85 Abnormal communication sending with 1 trip < < <
EFI

NOTE
• 1 trip: 1 trip detection logic
• 2 trip: 2 trip detection logic
• MIL: Malfunction indicator lamp
When the "O" mark is shown in the MIL column, the lamp will go on for that DTC number, but
when the "(" mark is shown, the lamp will not go on for that DTC No. Therefore, it is possible to
read out the DTC No. by using the diagnosis tester (DS-21/DS-@). As for the DTC No. bearing the
mark, the MIL will go on except the EU specifications.
 F5–24
3-12 FAIL-SAFE FUNCTION
The fail-safe function starts, based on the control contents indicated in the Table so that the drivability may
not be curtailed significantly even if an abnormality occurs in the input/output signal system of the trans-
mission control computer.
Furthermore, when the vehicle returns to the normal state after an abnormality has been detected, the fail-
safe will be released. However, the memory of the diagnosis results remains. (except for some codes).
Furthermore, while the fail-safe is functioning, the warning lamp (O/D OFF lamp) is flashing. (except for
the diagnosis code No.55)
FAIL-SAFE SPECIFICATIONS
DTC No. Contents of trouble Contents of fail-safe control Fail-safe releasing conditions
P0705/55 No neutral start switch input ;The normal gear shift control is carried out with ;The fail-safe function is re-
the shift position set to the D range. leased when the system re-
turns to the normal condition.
P0705/56 Neutral start switch multi- ;The normal gear shift control is carried out with ;The fail-safe function is re-
ple-input the shift position set to the D range. leased when the system re-
turns to the normal condition.
P0710/38 Oil temperature sensor cir- ;After a malfunction has been detected, the ;After the system has returned
cuit open wire or short- transmission is set to the 3rd gear. Then, the to the normal state, the fail-
circuit 1(3 gearshift takes place according to the vehi- safe function is released,
cle speed and throttle opening. when the vehicle speed
reaches 0 km/h in the P or N
range.
P0711/38 Abnormal oil temperature After a malfunction has been detected, the ;After the system has returned
sensor characteristics transmission is set to the 3rd gear. Then, the to the normal state, the fail-
1(3 gearshift takes place according to the vehi- safe function is released,
cle speed and throttle opening. when the vehicle speed
reaches 0 km/h in the P or N
range.
P0715/37 No turbine revolution input ;After a malfunction has been detected, the ;After the system has returned
transmission is set to the 3rd gear. Then, the to the normal state, the fail-
1(3 gearshift takes place according to the vehi- safe function is released,
cle speed and throttle opening. when the vehicle speed
reaches 0 km/h in the P or N
range.
P0720/42 No output revolution input ;In the case of the malfunction of the sensor sys- ;In the case of the malfunction
tem, the gear position at the time of the detection of the sensor system, after the
of malfunction will be retained. When the vehicle system has returned to the
stops once, the transmission is kept to the first normal state, the fail-safe
gear. function is released, when the
;In the case of the malfunction of the A/T main vehicle speed reaches 0 km/h
body, the transmission is kept to the first gear. in the P or N range.
;In the case of the malfunction
of the A/T main body, after the
system has retuned to the
normal state, the fail-safe
function is released when the
IG SW is turned "LOCK" once.
P0725/86 No engine revolution input ;When a malfunction is detected, the transmis- ;After the system has returned
sion is set to the 3rd gear. Then, the 1(3 gear- to the normal state, the fail-
shift takes place according to the vehicle speed safe function is released,
and throttle opening. when the vehicle speed
reaches 0 km/h in the P or N
range.
F5–25
DTC No. Contents of trouble Contents of fail-safe control Fail-safe releasing conditions
P0753/61 Solenoid No.1 circuit open ;Energizing to the solenoid which has been ;After the system has returned
wire and short-circuit judged malfunctioning is prohibited. to the normal state, the fail-
P0758/62 Solenoid No.2 circuit open ;In the case of short circuit, the transmission is safe function is released,
wire and short-circuit shifted to the 3rd gear. Afterward, 1(3 shift is when the IG SW is turned
P0763/63 Solenoid No.3 circuit open performed using the normal solenoid based on "LOCK" once.
wire and short-circuit the vehicle speed and throttle opening degree.
P0768/64 Duty solenoid circuit open However, in the case of the short circuit of the
wire and short-circuit No.3 solenoid, the transmission is fixed to the 3rd
P0773/65 LUC solenoid circuit open gear.
wire and short-circuit ;When the wire is open or plural solenoids are
malfunctioning, the transmission is kept to the
3rd gear.
P1703/72 Lockup revolution not ;Lockup is prohibited. ;After the system has returned
matched to the normal state, the fail-
safe function is released,
when the vehicle speed
reaches 0 km/h in the P or N
range.
P1706/31 Abnormality of engine ;The engine torque is set to a constant value. ;After the system has returned
torque ;After a malfunction has been detected, the to the normal state, the fail-
transmission is set to the 3rd gear. Then, the safe function is released,
1(3 gearshift takes place according to the vehi- when the vehicle speed
cle speed and throttle opening. reaches 0 km/h in the P or N
range.
P1711/41 Abnormality of throttle sen- ;The throttle opening is set to a constant value. ;After the system has returned
sor ;After a malfunction has been detected, the to the normal state, the fail-
transmission is set to the 3rd gear. Then, the safe function is released,
1(3 gearshift takes place according to the vehi- when the vehicle speed
cle speed. reaches 0 km/h in the P or N
range.
P1730/21 Abnormal battery system ;After detecting a malfunction, the 3rd gear is ;After the system has returned
power supply fixed. to the normal state, turn
"LOCK" the IG SW. Then, the
fail-safe function is released.
P1731/22 Abnormal sensor system ;After detecting a malfunction, the 3rd gear is ;After the system has returned
power supply fixed. to the normal state, turn
"LOCK" the IG SW. Then, fail-
safe function is released.
P1780/66 Solenoid switch circuit ;Energizing to the solenoid which has been ;After the system has returned
open wire and short-circuit judged malfunctioning is prohibited. to the normal state, the fail-
;In the case of short circuit, the transmission is safe function is released,
shifted to the 3rd gear. Afterward, 1(3 shift is when the IG SW is turned
performed using the normal solenoid based on "LOCK" once.
the vehicle speed and throttle opening degree.
However, in the case of the short circuit of the
switch solenoid, the transmission is fixed to the
3rd gear.
;When the wire is open or plural solenoids are
malfunctioning, the transmission is kept to the
3rd gear.
 F5–26
DTC No. Contents of trouble Contents of fail-safe control Fail-safe releasing conditions
U0100/82 Abnormal communication ;The throttle opening and engine torque are set ;After the system has returned
receiving with EFI to constant values. to the normal state, the fail-
;When a malfunction is detected, the transmis- safe function is released,
sion is set to the 3rd gear. Then, the 1(3 gear- when the vehicle speed
shift takes place according to the vehicle speed. reaches 0 km/h in the P or N
range.
U1001/85 Abnormal communication ;The throttle opening and engine torque are set ;After the system has returned
sending with EFI to constant values. to the normal state, the fail-
;When a malfunction is detected, the transmis- safe function is released,
sion is set to the 3rd gear. Then, the 1(3 gear- when the vehicle speed
shift takes place according to the vehicle speed. reaches 0 km/h in the P or N
range.
F5–27
3-13 TROUBLE SHOOTING ACCORDING TO DIAGNOSIS CODE
3-13-1 NO.21 (ABNORMAL BATTERY SYSTEM POWER SUPPLY)
(1) Output conditions
1.The battery system power supply (BAT1, BAT2) are interrupted over a certain period of time.
(2) Checking points
1.Are the harness and connector between the battery and the A/T ECU normal?
(3) Checking method
è1. Check of ECU B fuse
SPECIFIED VALUE: Not fused.

çIf it is OK, go to step è2.

çIf it is NG, go to step è4.

è2. Check the voltage between the A/T ECU and the ECU B fuse.
1.After setting the IG SW to "LOCK", disconnect the connector from the A/T ECU.
2.After turning ON the IG SW, measure the voltage.
(1) Between A/T ECU vehicle harness side connector B2 (BAT1) and B6(E01)
(2) Between A/T ECU vehicle harness side connector B1 (BAT2) and B6(E01)
SPECIFIED VALUE: Battery voltage

çIf OK, check the A/T ECU unit circuit.

Refer to Page A1-24.

çIf it is NG, go to step è3.

è3. Check the continuity between A/T ECU and ECU B fuse.
1.After setting IG switch to LOCK, measure the resistance.
(1) Between A/T ECU vehicle harness side connector B2 (BAT1) and ECU B fuse downstream side ter-
minal
(2) Between A/T ECU vehicle harness side connector B1 (BAT2) and ECU B fuse downstream side ter-
minal
SPECIFIED VALUE: Continuity exists.

çIf OK, check the fitting condition of each connector and harness condition.
çIf NG, repair or replace the harness and connector.

è4. Check short-circuit between A/T ECU and ECU B fuse.

1.After setting IG switch to LOCK, disconnect the connector from the A/T ECU. Check the continuity.
(1) Between A/T ECU vehicle harness side connector B2 (BAT1) and B6(E01)
(2) Between A/T ECU vehicle harness side connector B1 (BAT2) and B6(E01)
SPECIFIED VALUE: No continuity exists.

çIf it is OK, replace the ECU B fuse. Then, wait for a little while.
çIf NG, repair the harness and connector between A/T ECU and ECU B fuse. Then, replace the ECU
B fuse.
 F5–28
3-13-2 NO.22 (ABNORMAL SENSOR SYSTEM POWER SUPPLY)
(1) Output conditions
1.When the revolution sensor system power supply is short-circuited over a certain period of time.
(2) Checking points
1.Are the harness and connector between A/T ECU and turbine revolution sensor, output revolution sen-
sor normal?
2.Are the turbine revolution sensor and output revolution sensor normal?
(3) Checking method
è1. Check the short-circuit between A/T ECU and body ground.
1.After setting IG SW to "LOCK", disconnect the connector from the A/T ECU. Check the continuity.
(1) Between A/T ECU vehicle harness side connector C9(VBTB) and body ground.
(2) Between A/T ECU vehicle harness side connector C7(VBOP) and body ground.
SPECIFIED VALUE: No continuity exists.

çIf it is OK, go to step è2.

çIf NG, repair or replace the vehicle harness.

è2. Check the turbine revolution sensor unit.

1.Disconnect the vehicle harness side connector of the turbine revolution sensor.
2.After turning ON the IG switch, check that the code No.22 is extinguished.
NOTE
• When the vehicle harness side connector of the turbine revolution sensor is disconnected, ensure
that the code No.37 is indicated.

SPECIFIED VALUE: The code No.22 is extinguished.

çIf OK, replace the turbine revolution sensor.

Refer to Page F5-1.

çIf it is NG, go to step è3.

è3. Check of the output revolution sensor unit

1.Disconnect the vehicle harness side connector of the output revolution sensor.
2.After turning ON the IG switch, check that the code No.22 is extinguished.
NOTE
• When the vehicle harness side connector of the output revolution sensor is disconnected, ensure
that the code No.42 is indicated.

SPECIFIED VALUE: The code No.22 is extinguished.

çIf OK, replace the output revolution sensor.

Refer to Page F5-1.

çIf NG, check the A/T ECU unit circuit.

Refer to Page A1-24.
F5–29
3-13-3 NO.31 (ABNORMAL ENGINE TORQUE)
(1) Output conditions
1.Detected when one of the following items is malfunctioning.
(1) Manifold absolute pressure sensor malfunctioning
(2) Engine revolution sensor malfunctioning
(3) Knocking sensor malfunctioning
(4) Variable valve timing control system malfunctioning
(2) Checking method
1.Check the engine system.
(1) Type K3-VE engine-mounted vehicle
Refer to Page B8-292.

Refer to Page B8-349.

Refer to Page B8-352.

Refer to Page B8-355.

Refer to Page B8-396.

Refer to Page B8-407.

3-13-4 NO.37 (TURBINE REVOLUTION SENSOR SYSTEM)

(1) Output conditions
1.Outputted under conditions specified in Item (1) or (2).
(1) When the engine is running and the vehicle is stopped in the range of H or G, the turbine will not
run over a certain period of time.
(2) The turbine will not run when the vehicle is running in ranges other than H;G.
(2) Checking points
1.Is the D range signal system of the neutral start switch normal?
2.Is the turbine revolution sensor normal?
3.Are the harness and connector between A/T ECU and turbine revolution sensor normal?
(3) Checking method
è1. Illumination of neutral start switch D range signal system
1.The diagnosis output is indicated at the shift lever D range position.
SPECIFIED VALUE: The diagnosis code No.55 or No.56 is outputted.

çIf YES, check the neutral start switch system.

Refer to Page F5-36.

Refer to Page F5-38.

çIf it is NO, go to step è2.

 F5–30
è2. Check the vehicle harness and connector between A/T ECU and the turbine revolution sensor.
1.Between A/T ECU vehicle harness side connector C20 (ETBN) and sensor vehicle harness side con-
nector 3
2.Between A/T ECU vehicle harness side connector C10 (RTBN) and sensor vehicle harness side con-
nector 2
3.Between A/T ECU vehicle harness side connector C9 (VBTB) and sensor vehicle harness side con-
nector 1
SPECIFIED VALUE: Continuity exists.

çIf NG, repair or replace the vehicle harness.

çIf it is OK, go to step è3.

è3. Replacement of turbine revolution sensor.

1.Replace the turbine revolution sensor.
SPECIFIED VALUE: The vehicle returns to the normal state.

çIf OK, finish the trouble shooting.

çIf it is NG, go to step è4.

è4. Check of A/T ECU input/output signals (Turbine revolution sensor)

1.Is the normal waveform outputted?
2.Does the waveform include abnormal noise?
Refer to Page F5-79.

SPECIFIED VALUE: The normal waveform is outputted.

çIf OK, check the A/T ECU unit circuit.

Refer to Page A1-24.

çIf NG, perform the following operations.

(1) Remove the noise generating source.
(2) Again check the fitting state of each connector and harness conditions.
F5–31
3-13-5 NO.38 (OIL TEMPERATURE SENSOR SYSTEM)
(1) Output conditions
1.When a voltage value which is not plausible in view of the sensor characteristics is detected for a cer-
tain length of time.
(2) Checking points
1.Is the oil temperature sensor (Solenoid wire) normal?
2.Are the harness and connector between A/T ECU and oil temperature sensor (Solenoid wire) normal?
(3) Checking method
è1. Check of vehicle harness and connector between A/T ECU and solenoid wire
1.Between A/T ECU vehicle harness side connector C14 (OTMP) and solenoid wire vehicle harness side
connector 8
2.Between A/T ECU vehicle harness side connector C13 (ETMP) and solenoid wire vehicle harness side
connector 12
SPECIFIED VALUE: Continuity exists.

çIf it is OK, go to step è2.

çIf NG, repair or replace the vehicle harness.

è2. Check of solenoid wire unit (Oil temperature sensor system)

Refer to Page F5-73.

çIf it is OK, go to step è3.

çIf NG, replace the solenoid wire.

è3. Check of A/T ECU input/output signals (Oil temperature sensor system)
Refer to Page F5-79.

çIf OK, check the A/T ECU unit circuit.

Refer to Page A1-24.

çIf NG, again check the fitting state of each connector and harness conditions.
3-13-6 NO.41 (ABNORMAL THROTTLE SENSOR)
1.Check the engine ECU throttle sensor system.
Type K3-VE engine-mounted vehicle
Refer to Page B8-306.
 F5–32
3-13-7 NO.42 (OUTPUT REVOLUTION SENSOR SYSTEM)
(1) Output conditions
1.Outputted under conditions specified in Item (1) or (2).
(1) While the vehicle is running, the output revolution disappears suddenly. Or the ratio relative to the
turbine revolution is abnormal (sensor system open wire or short-circuit).
(2) The vehicle can not start off due to failure of the C2 clutch engagement. (The turbine revolution only
rises) (Malfunction of the A/T main body)
(2) Checking points
1.Is the P, N range signal system of the neutral start switch normal?
2.Is the output revolution sensor normal?
3.Are the harness and connector between A/T ECU and output revolution sensor normal?
4.Is the A/T main body normal?
(3) Checking method
è1. Check of neutral start switch P;N range signal system
1.The diagnosis code output is indicated at the shift lever P;N range position.
SPECIFIED VALUE: The diagnosis code No.55 or No.56 is outputted.

çIf YES, check the neutral start switch system.

Refer to Page F5-36.

Refer to Page F5-38.

çIf it is NO, go to step è2.

è2. Check of neutral start switch signal 1

1.After turning "LOCK" the IG SW once, start the engine in the N range.
2.With the accelerator set to OFF, move the shift lever from the N!D range.
SPECIFIED VALUE: The vehicle moves forward.

çIf it is OK, go to step è4.

çIf it is NG, go to step è3.

è3. Check of neutral start switch signal 2

1.After turning "LOCK" the IG SW once, start the engine in the neutral range.
2.With the accelerator set to OFF, move the shift lever in the sequence of the N!D!N!D range.
SPECIFIED VALUE: The vehicle moves forward.

çIf OK, replace the valve body Ay.

çIf NG, replace the A/T Ay.
F5–33
è4. Check of vehicle harness and connector between A/T ECU and output revolution sensor
1.Between A/T ECU vehicle harness side connector C18 (EOPT) and sensor vehicle harness side con-
nector 3
2.Between A/T ECU vehicle harness side connector C8 (ROPT) and sensor vehicle harness side con-
nector2
3.Between A/T ECU vehicle harness side connector C7 (VBOP) and sensor vehicle harness side con-
nector 1
SPECIFIED VALUE: Continuity exists.

çIf OK, repair or replace the vehicle harness.

çIf it is NG, go to step è5.

è5. Replace the output revolution sensor.

1.Replace the output revolution sensor.
SPECIFIED VALUE: The vehicle returns to the normal state.

çIf OK, finish the trouble shooting.

çIf it is NG, go to step è6.

è6. Check of A/T ECU input/output signals (Output revolution sensor system)
1.Is the normal waveform outputted?
2.Does the waveform include abnormal noise?
Refer to Page F5-79.

SPECIFIED VALUE: The normal waveform is outputted.

çIf OK, check the A/T ECU unit circuit.

Refer to Page A1-24.

çIf NG, perform the following operations,

(1) Remove the noise generating source.
(2) Again check the fitting state of each connector and harness conditions.
 F5–34
3-13-8 NO.55 (NO NEUTRAL START SWITCH INPUT)
(1) Output conditions
1.When no signal input state is detected over a certain length of time:
(2) Checking points
1.Is the neutral start switch normal?
2.Are the harness and connector between A/T ECU and the neutral start switch normal?
CAUTION
• The diagnosis code No.55 is not memorized. (The code is outputted only when a malfunction is
occurring.)

(3) Checking method

è1. Check of lighting of the shift indicator
1.Check the illuminating state of the shift indicator inside the combination meter by operating the shift
lever .
SPECIFIED VALUE: Illuminates normally.

çIf it is OK, go to step è2.

çIf NG, check the neutral start switch unit.
Refer to Page F5-78.

è2. Check of harness and connector between A/T ECU and sensor harness.
1.With the vehicle in a stationary state, short-circuit the ECU-T terminal and the E terminal inside the DLC,
using the SST.
SST: 09991-87404-000
SST: 09991-87403-000

2.After turning ON the IG switch, move the shift lever progressively and hold it in each range (for about
10 seconds). Check to see in which range the O/D OFF lamp flashes (the diagnosis code indication).
3.At the range where the O/D OFF lamp flashes, check the harness for fitting state and open wire.
(1) Between A/T ECU vehicle harness side connector C15 (P) and switch vehicle harness side con-
nector 4 (P)
(2) Between A/T ECU vehicle harness side connector B7 (R) and switch vehicle harness side con-
nector 1 (R)
(3) Between A/T ECU vehicle harness side connector C24 (N) and switch vehicle harness side con-
nector 5 (N)
(4) Between A/T ECU vehicle harness side connector C17 (D) and switch vehicle harness side con-
nector 3 (D)
(5) Between A/T ECU vehicle harness side connector C16 (2) and switch vehicle harness side con-
nector 2 (2)
(6) Between A/T ECU vehicle harness side connector C25 (L) and switch vehicle harness side con-
nector 8 (L)
SPECIFIED VALUE: Continuity exists.

çIf it is OK, go to step è3.

çIf NG, repair or replace the harness of the vehicle concerned.
F5–35
è3. Check of A/T ECU input/output signals (Neutral start switch system)
Refer to Page F5-79.

çIf OK, check the A/T ECU unit circuit.

Refer to Page A1-24.

çIf NG, again check the fitting state of each connector and harness conditions.
 F5–36
3-13-9 NO.56 (NEUTRAL START SWITCH MULTIPLE INPUT)
(1) Output conditions
1.When multiple input of signals is detected over a certain length of time.
(2) Checking points
1.Is the neutral start switch normal?
2.Are the harness and connector between A/T ECU and neutral start switch normal?
(3) Checking method
è1. Check of lighting of shift indicator
1.Check the illuminating state of the shift indicator inside the combination meter by operating the shift
lever .
SPECIFIED VALUE: Illuminates normally.

çIf it is OK, go to step è2.

çIf NG, check the neutral start switch unit.
Refer to Page F5-78.

è2. Check of harness and connector between A/T ECU and sensor harness
1.Check each harness for being pinched (Short-circuit).
(1) Between A/T ECU vehicle harness side connector C15 (P) and switch vehicle harness side con-
nector 4 (P)
(2) Between A/T ECU vehicle harness side connector B7 (R) and switch vehicle harness side con-
nector 1 (R)
(3) Between A/T ECU vehicle harness side connector C24 (N) and switch vehicle harness side con-
nector 5 (N)
(4) Between A/T ECU vehicle harness side connector C17 (D) and switch vehicle harness side con-
nector 3 (D)
(5) Between A/T ECU vehicle harness side connector C16 (2) and switch vehicle harness side con-
nector 2 (2)
(6) Between A/T ECU vehicle harness side connector C25 (L) and switch vehicle harness side con-
nector 8 (L)
SPECIFIED VALUE: Not pinched (Short-circuit)

çIf it is OK, go to step è3.

çIf NG, repair or replace the vehicle harness.

è3. Check of A/T ECU input/output signals (Neutral start switch system)
Refer to Page F5-79.

çIf OK, check A/T ECU unit circuit.

Refer to Page A1-24.

çIf NG, again check the state of each connector and harness conditions.
F5–37
3-13-10 NO.61 (SOLENOID NO.1 SYSTEM)
(1) Output conditions
1.When the solenoid No.1 is energized, no current flowed or excessive current flowed over a certain
length of time.
(2) Checking points
1.Are the harness and connector between A/T ECU and solenoid No.1 normal?
2.Is the solenoid No.1 normal?
(3) Checking method
è1. Check of vehicle harness and connector between the A/T ECU and solenoid wire
1.Between A/T ECU vehicle harness side connector C6 (B1') and solenoid wire vehicle harness side
connector 7
2.Between A/T ECU vehicle harness side connector C5 (B1-) and solenoid wire vehicle harness side
connector 11
SPECIFIED VALUE: Continuity exists.

çIf it is OK, go to step è2.

çIf NG, repair or replace the vehicle harness.

è2. Check of solenoid wire unit (Solenoid No.1 system)

Refer to Page F5-73.

çIf it is OK, go to step è3.

çIf NG, replace the solenoid wire.

è3. Check of solenoid No.1 unit

Refer to Page F5-77.

çIf OK, check the A/T ECU unit circuit.

Refer to Page A1-24.

çIf NG, replace the solenoid No.1.

 F5–38
3-13-11 NO.62 (SOLENOID NO.2 SYSTEM)
(1) Output conditions
1.When the solenoid No.2 is energized, no current flowed or excessive current flowed over a certain
length of time.
(2) Checking points
1.Are the harness and connector between A/T ECU and solenoid No.2 normal?
2.Is the solenoid No.2 normal?
(3) Checking method
è1. Check the vehicle harness and connector between A/T ECU and solenoid wire
1.Between A/T ECU vehicle harness side connector C4 (C2') and solenoid wire vehicle harness side
connector 5
2.Between A/T ECU vehicle harness side connector C3 (C2-) and solenoid wire vehicle harness side
connector 9
SPECIFIED VALUE: Continuity exists.

çIf it is OK, go to step è2.

çIf NG, repair or replace the vehicle harness.

è2. Check of solenoid wire unit (Solenoid No.2 system)

Refer to Page F5-73.

çIf it is OK, go to step è3.

çIf NG, replace the solenoid wire.

è3. Check of solenoid No.2 unit

Refer to Page F5-77.

çIf OK, check the A/T ECU unit circuit.

Refer to Page A1-24.

çIf NG, replace the solenoid No.2.

F5–39
3-13-12 NO.63 (SOLENOID NO.3 SYSTEM)
(1) Output conditions
1.When the solenoid No.3 is energized, no current flowed or excessive current flowed over a certain
length of time.
(2) Checking points
1.Is the harness and connector between A/T ECU and solenoid No.3 normal?
2.Is the solenoid No.3 normal?
(3) Checking method
è1. Check of vehicle harness and connector between A/T ECU and solenoid wire
1.Between A/T ECU vehicle harness side connector C2 (C3B2') and solenoid wire vehicle harness side
connector 6
2.Between A/T ECU vehicle harness side connector C1 (C3B2-) and solenoid wire vehicle harness side
connector 10
SPECIFIED VALUE: Continuity exists.

çIf it is OK, go to step è2.

çIf NG, repair or replace the vehicle harness.

è2. Check of solenoid wire unit (Solenoid No.3 system)

Refer to Page F5-73.

çIf it is OK, go to step è3.

çIf NG, replace the solenoid wire.

è3. Check of solenoid No.3 unit

Refer to Page F5-77.

çIf OK, check the A/T ECU unit circuit.

Refer to Page A1-24.

çIf NG, replace the solenoid No.3.

 F5–40
3-13-13 NO.64 (DUTY SOLENOID SYSTEM)
(1) Output conditions
1.When the duty solenoid is energized, no current flowed or excessive current flowed over a certain
length of time.
(2) Checking points
1.Are the harness and connector between A/T ECU and duty solenoid normal?
2.Is the duty solenoid normal?
(3) Checking method
è1. Check of vehicle harness and connector between A/T ECU and solenoid wire
1.Between A/T ECU vehicle harness side connector C23 (LUCC) and solenoid wire vehicle harness side
connector 2
SPECIFIED VALUE: Continuity exists.

çIf it is OK, go to step è2.

çIf NG, repair or replace the vehicle harness.

è2. Check of solenoid wire unit (Duty solenoid system)

Refer to Page F5-73.

çIf it is OK, go to step è3.

çIf NG, replace the solenoid wire.

è3. Check of duty solenoid unit

Refer to Page F5-77.

çIf OK, check the A/T ECU unit circuit.

Refer to Page A1-24.

çIf NG, replace the duty solenoid.

3-13-14 NO.65 (LUC SOLENOID SYSTEM)
(1) Output conditions
1.When the LUC solenoid is energized, no current flowed or excessive current flowed over a certain
length of time.
(2) Checking points
1.Are the harness and connector between A/T ECU and LUC solenoid normal?
2.Is the LUC solenoid normal?
(3) Checking method
è1. Check of vehicle harness and connector between A/T ECU and solenoid wire
1.Between A/T ECU vehicle harness side connector C11 (LUCR) and solenoid wire vehicle harness side
connector 3
SPECIFIED VALUE: Continuity exists.

çIf it is OK, go to step è2.

çIf NG, repair or replace the vehicle harness.

è2. Check of solenoid wire unit (LUC solenoid system)

Refer to Page F5-73.

çIf it is OK, go to step è3.

çIf NG, replace the solenoid wire.
F5–41
è3. Check of LUC solenoid unit
Refer to Page F5-78.

çIf OK, check the A/T ECU unit circuit.

Refer to Page A1-24.

çIf NG, replace the LUC solenoid.

 F5–42
3-13-15 NO.66 (SWITCH SOLENOID SYSTEM)
(1) Output conditions
1.When the switch solenoid is energized, no current flowed or excessive current flowed over a certain
length of time.
(2) Checking points
1.Are the harness and connector between A/T ECU and switch solenoid normal?
2.Is the switch solenoid normal?
(3) Checking method
è1. Check of vehicle harness and connector between A/T ECU and solenoid wire
1.Between A/T ECU vehicle harness side connector C12 (SOLR) and solenoid wire vehicle harness side
connector 4
SPECIFIED VALUE: Continuity exists.

çIf it is OK, go to step è2.

çIf NG, repair or replace the vehicle harness.

è2. Check of solenoid wire unit (Switch solenoid system)

Refer to Page F5-73.

çIf it is OK, go to step è3.

çIf NG, replace the solenoid wire.

è3. Check of switch solenoid unit

Refer to Page F5-78.

çIf OK, check the A/T ECU unit circuit.

Refer to Page A1-24.

çIf NG, replace the switch solenoid.

F5–43
3-13-16 NO.72 (LOCK-UP REVOLUTION NOT MASTCHED)
(1) Output conditions
1.When the engine revolution differs from the lock-up revolution greatly during the direct lock-up opera-
tion.
(2) Checking points
1.Is the valve body Ay normal?
2.Is the torque converter Ay normal?
(3) Checking method
è1. Check of hydraulic pressure
Refer to Page F3-6.

1.With the vehicle lifted up, slowly depress the accelerator pedal so that the transmission may be set to
the 3rd gear and further accelerate the vehicle until the direct lockup occurs. Measure the LUC ON
pressure and LUC OFF pressure.
SPECIFIED VALUE: 666&49kPa{6.8&0.5kgf/cm } (LUC ON pressure(LUC OFF pressure)

NOTE
• When the direct lock-up occurs, the duty ratio of the LUC control solenoid is 100%. (Refer to the
A/T input/output signal check.)
• When you want to measure the hydraulic pressure after the warning indication, stop the vehicle
and move the shift lever once to the neutral range (Releasing of the fail-safe). Then, again set the
shift lever to the D range so as to perform the measurement.

çIf it is OK, go to step è2.

çIf NG, replace the valve body Ay.

è2.Replace the torque converter Ay

1.Replace the torque converter Ay.
SPECIFIED VALUE: The vehicle retunes to the normal state.

çIf OK, finish the trouble shooting.

çIf NG, replace the A/T Ay.
 F5–44
3-13-17 NO.82 (ABNORMAL COMMUNICATION RECEIVING WITH EFI)
NO.85 (ABNORMAL COMMUNICATION SENDING WITH EFI)
(1) No.82 output conditions
1.When the communication signal from the EFI ECU can not be received:
(2) No.85 output conditions
1.When the communication signal to the EFI ECU can not be sent out:
(3) Checking points
1.Is the harness between EFI ECU and A/T ECU normal?
2.Does the connector section exhibit poor contact?
(4) Checking method
è1. CAN communication basic check
1.Conduct the CAN communication basic check.
Refer to Page L2-14.

çIf OK for the R.H.D. vehicles, proceed to è2.

çIf OK for the L.H.D. vehicles, proceed to è3.
çIf NG, repair or replace the malfunctioning sections.

è2. Check of short-circuit in CAN line

1.Conduct continuity check for between the following terminals given below.
(1) Between A/T ECU connection vehicle harness side connector B9 (HCN1) and A/T ECU connection
vehicle harness side connectorB19 (LCN1)
(2) Between EFI ECU connection vehicle harness side connector 6 (CANL) and EFI ECU connection
vehicle harness side connector 7 (CANH)
(3) Between EFI ECU connection vehicle harness side connector 8 (LCAN) and EFI ECU connection
vehicle harness side connector 9 (HCAN)
SPECIFIED VALUE: No continuity exists.

çIf it is OK, go to step è4.

çIf NG, repair or replace the malfunctioning sections.

è3. Check of short-circuit in CAN line

1.Perform continuity check between the following terminals.
(1) Between A/T ECU connection vehicle harness side connector B9(HCN1) and A/T ECU connection
vehicle harness side connector B19(LCN1)
(2) Between meter connection vehicle harness side connector 1(CANH) and meter connection vehi-
cle harness side connector 2(CANL) interval
(3) Between meter connection vehicle harness side connector 3(HCAN) and meter connection vehi-
cle harness side connector 4(LCAN)
SPECIFIED VALUE: No continuity exists.

çIf it is OK, go to step è4.

çIf NG, repair or replace the malfunctioning sections.
F5–45
è4. Check of CAN line for short circuit
1.Conduct continuity check for between the following terminals given below.
(1) Between A/T ECU connection vehicle harness side connector B19 (LCN1) and battery positive ter-
minal
(2) Between A/T ECU connection vehicle harness side connector B9 (HCN1) and battery positive ter-
minal
(3) Between A/T ECU connection vehicle harness side connector B19 (LCN1) and body ground
(4) Between A/T ECU connection vehicle harness side connector B9 (HCN1) and body ground
SPECIFIED VALUE: No continuity exists.

çIf it is OK, go to step è5.

çIf NG, repair or replace the malfunctioning sections.

è5. Check of EFI ECU voltage

1.Turn ON the IG SW.
2.Measure the voltage between the following terminals given below.
(1) Between EFI ECU connection vehicle harness side connector 27 ('B) and body ground
(2) Between EFI ECU connection vehicle harness side connector 38 (BAT) and body ground
(3) Between EFI ECU connection vehicle harness side connector 39 (MRO) and body ground
SPECIFIED VALUE: Battery voltage

çIf OK for the R.H.D. vehicles, proceed to è7.

çIf OK for the R.H.D. vehicles, proceed to è6.
çIf NG, repair or replace the malfunctioning sections.

è6. Check of meter voltage

1.Measure the voltage between the following terminals given below.
SPECIFIED VALUE: Battery voltage

çIf it is OK, go to step è7.

çIf NG, repair or replace the malfunctioning sections.

è7. Check of A/T ECU voltage

1.Measure the voltage between the following terminals given below.
(1) Between A/T ECU connection vehicle harness side connector B2 (BAT2) and body ground
(2) Between A/T ECU connection vehicle harness side connector 2(BAT2) and body ground
(3) Between A/T ECU connection vehicle harness side connector B3('B) and body ground
SPECIFIED VALUE: Battery voltage

çIf OK for the R.H.D. vehicles, proceed to è8.

çIf OK for the R.H.D. vehicles, proceed to è9.
çIf NG, repair or replace the malfunctioning sections.
 F5–46
è8. Check of ECU ground
1.Set the IG SW to the "LOCK" position.
2.Conduct continuity check for between the following terminals given below.
(1) Between EFI ECU connection vehicle harness side connector 20 (E01) and body ground
(2) Between EFI ECU connection vehicle harness side connector 125(E1) and body ground
(3) Between A/T ECU connection vehicle harness side connector B5(E02) and body ground
(4) Between A/T ECU connection vehicle harness side connector B6(E01) and body ground
(5) Between A/T ECU connection vehicle harness side connector B24(E1) and body ground
SPECIFIED VALUE: Continuity exists.

çIf OK, check the unit circuits of the EFI ECU and A/T ECU.
Refer to Page A1-24.

çIf NG, repair or replace the malfunctioning sections.

è9. Check of ECU ground

1.Set the IG SW to the "LOCK" position.
2.Conduct continuity check for between the following terminals given below.
(1) Between EFI ECU connection vehicle harness side connector 20 (E01) and body ground
(2) Between EFI ECU connection vehicle harness side connector 125(E1) and body ground
(3) Between A/T ECU connection vehicle harness side connector B5(E02) and body ground
(4) Between A/T ECU connection vehicle harness side connector B6(E01) and body ground
(5) Between A/T ECU connection vehicle harness side connector B24(E1) and body ground
(6) Between meter connection vehicle harness side connector 18(GND) and body ground
SPECIFIED VALUE: Continuity exists.

çIf OK, check the unit circuits of the EFI ECU and A/T ECU.
Refer to Page A1-24.

çIf NG, repair or replace the malfunctioning sections.

F5–47
3-13-18 NO.86 (NO ENGINE REVOLUTION INPUT)
(1) Output conditions
1.When the engine revolution signal from the EFI ECU is not inputted into the A/T ECU over a certain
length of time:
(2) Checking points
1.Is the engine revolution sensor signal of the EFI ECU normal?
2.Is the EFI ECU normal?
(3) Checking method
è1. Check of harness and connector between A/T ECU and EFI ECU
1.After setting IG switch to LOCK, disconnect the connector from the A/T ECU. Conduct the continuity
check.
(1) Between A/T ECU vehicle harness side connector B8(REG1) and EFI ECU vehicle harness side
connector 4 (AYNE)
SPECIFIED VALUE: Continuity exists.

çIf it is OK, go to step è2.

çIf NG, repair or replace the vehicle harness.

è2. Check of EFI ECU unit circuit

Refer to Page A1-24.

çIf OK, replace the EFI ECU.

çIf NG, repair the malfunctioning sections.
 F5–48
3-14 TROUBLE SHOOTING ACCORDING TO MALFUNCTION PHENOMENA
3-14-1 TABLE SHOWING POSSIBLE CAUSES ACCORDING TO MALFUNCTION PHENOMENA
Possible causes

Valve body malfunctioning (except for solenoid valve)

Stop lamp switch system open wire or short-circuit

Neutral start switch improperly adjusted
Manual valve lever improperly adjusted
2nd & 4th brake cylinder seal faulty
Strainer O-ring broken or worn out

Control cable improperly adjusted

Torque converter malfunctioning

Transmission Ay malfunctioning
Drive plate cracked, bolts loose
Switch solenoid malfunctioning
Solenoid No.2 malfunctioning
Solenoid No.3 malfunctioning
Solenoid No.1 malfunctioning
Duty solenoid malfunctioning
LUC solenoid malfunctioning
Poor engine performance

Oil pump malfunctioning

A/T ECU malfunctioning

Malfunction phenomena

Improper oil level

Idle speed faulty

(1) Starter inoperative < < <

(2) The vehicle can not move forward nor back-
< < < < < < < <
ward.
(3) The vehicle can not move forward. < < < < < <
(4) The vehicle can not move backward. < < < <
(5) The engine stalls during G!D;I. < < < < < <
(6) The clutch is slipping during the 1st gear run-
< < < < < < < <
ning.
(7) The clutch is slipping during the 2nd gear run- <
< < < < < < < <
ning.
(8) The clutch is slipping during the 3rd gear run-
< < < < < < < < <
ning.
(9) The clutch is slipping during the 4th gear run- <
< < < < < < < < <
ning.
(10) The clutch is slipping during the I range
< < < < < < < < <
running.
(11) The vehicle starts moving in the H or G
< < <
range.
(12) When the engine speed is raised in the G
<
range, the vehicle starts to move.
(13) The engine starts in ranges other than H;G . < <
(14) No gear shifting takes place. (kept in the 1st
< <
gear)
(15) No gear shifting takes place. (kept in the 3rd
<
gear)
(16) The vehicle starts off from the 2nd gear. < <
(17) Gear shifting shock;time lag large (G!D) < < < < < < < <
(18) Gear shifting shock;time lag large (G!I) < < < < < < <
(19) Gear shifting shock;time lag large (1st#2nd) < < < < < < <
(20) Gear shifting shock;time lag large (2nd#3rd) < < < < < < < <
(21) Gear shifting shock;time lag large (3rd#4th) < < < < < < < < <
(22) Engine racing during gear shifting (2nd!3rd) < < < < <
(23) Engine racing during gear shifting (3rd!4th) < < < < <
(24) Gear shifting takes place only in (1st#3rd) < <
F5–49
3-14-2 TROUBLE-SHOOTING ACCORDING TO MALFUNCTION PHENOMENON ITEMS
(1) Starter inoperative
1.CHECK AND ADJUSTMENT OF CONTROL CABLE
Refer to Page F3-2.

2.CHECK AND ADJUSTMENT OF NEUTRAL START SWITCH

Refer to Page F3-3.

3.Check of engine cranking system

4.Check of oil pump system
(2) The vehicle will not move forward nor backward.
è1. Check of oil level
Refer to Page F3-1.

çIf it is OK, go to step è2.

çIf NG, adjust the oil level.

è2. Check and adjustment of control cable

Refer to Page F3-2.

çIf it is OK, go to step è3.

çIf NG, adjust the control cable.

è3. Manual running test

1.Disconnect the A/T ECU connector. Check the gear position at each range.
SPECIFIED VALUE:
Range H;G D I
Gear position Neutral 3rd Reverse

çIf it is OK, go to step è4.

çIf it is NG, go to step è5.

è4. Check of ECU power supply circuit

Refer to Page A1-24.

çIf OK, replace the A/T ECU. After the replacement, if the malfunction persists, proceed to è5.
çIf NG, repair the connector or circuit concerned.

è5. Check and adjustment of manual valve

1.Remove the oil pan. Check that the manual valve groove is aligned with the hole at the valve body in
the G range.
Refer to Page F3-25.

CAUTION
• The oil pan is a non-reusable part.

çIf it is OK, go to step è6.

çIf NG, adjust the manual valve.
 F5–50
è6. Replacement of valve body
Refer to Page F3-25.

SPECIFIED VALUE: The vehicle returns to the normal state.

çIf OK, finish the trouble shooting.

çIf it is NG, go to step è7.

è7. Hydraulic pressure measurement

1.Measure the LUC OFF pressure when the lockup is OFF.
Refer to Page F3-6.

çIf OK, replace the torque converter Ay.

çIf it is NG, go to step è8.

è8. Check of drive plate

1.Remove the A/T from the vehicle. Check the drive plate for cracks; the bolts for looseness.
çIf OK, replace the oil pump Ay.
çIf NG, replace the drive plate or tighten the bolts.
(3) The vehicle can not move forward.
è1. Check and adjustment of control cable
Refer to Page F3-2.

çIf it is OK, go to step è2.

çIf NG, adjust the control cable.

è2. Manual running test

1.Disconnect the connector of the A/T ECU. Check the gear position of each range.
çIf it is OK, go to step è3.
çIf it is NG, go to step è4.
Range H;G D I
Gear position Neutral 3rd Reverse

è3. Check of ECU power supply circuit

Refer to Page A1-24.

çIf OK, replace the A/T ECU. After the replacement, if the malfunction persists, proceed to è5.
çIf NG, repair the connector or circuit concerned.

è4. Check and adjustment of manual valve

1.Remove the oil pan. Check that the manual valve groove is aligned with the hole at the valve body in
the G range.
Refer to Page F3-25.

çIf it is OK, go to step è5.

çIf NG, adjust the manual valve.
CAUTION
• The oil pan is a non-reusable part.
F5–51
è5. Check of solenoid No.2 unit (Operation)
Refer to Page F5-77.

çIf it is OK, go to step è6.

çIf NG, replace the solenoid No.2.

è6. Replacement of valve body

Refer to Page F3-25.

SPECIFIED VALUE: The vehicle returns to the normal state.

çIf OK, finish the trouble shooting.

çIf NG, repair or replace the A/T Ay.
(4) The vehicle can not move backward.
è1. Check and adjustment of control cable
Refer to Page F3-2.

çIf it is OK, go to step è2.

çIf NG, adjust the control cable.

è2. Manual running test

1.Disconnect the connector of the A/T ECU. Check the gear position of each range.
çIf it is OK, go to step è3.
çIf it is NG, go to step è4.
SPECIFIED VALUE:
Range H;G D I
Gear position Neutral 3rd Reverse

è3. ECU power supply circuit check

Refer to Page A1-24.

çIf OK, replace the A/T ECU. After the replacement, if the malfunction persists, proceed to è4.
çIf NG, repair the connector or circuit concerned.

è4. Check and adjustment of manual valve

1.Remove the oil pan. Check that the manual valve groove is aligned with the hole at the valve body in
the G range.
Refer to Page F3-25.

CAUTION
• The oil pan is a non-reusable part.

çIf OK, repair or replace the A/T Ay.

çIf NG, adjust the manual valve.
 F5–52
(5) The engine stalls during G!D;I
è1. Check of idle speed
1.Check the idle speed.
(1) Type K3-VE engine-mounted vehicle
Refer to Page B1-25.

çIf it is OK, go to step è2.

çIf NG, repair the engine idle system.

è2. Check of duty solenoid, LUC solenoid unit (Operation)

Refer to Page F5-77.

Refer to Page F5-78.

çIf it is OK, go to step è2.

çIf NG, replace the solenoid concerned.

è3. Replacement of valve body

Refer to Page F3-25.

SPECIFIED VALUE: The vehicle returns to the normal state.

çIf OK, finish the trouble shooting.

çIf NG, replace the torque converter Ay.
(6) The clutch is slipping during the 1st gear running.
è1. Check of oil level
Refer to Page F3-1.

çIf it is OK, go to step è2.

çIf NG, adjust the oil level.

è2. Check and adjustment of control cable

Refer to Page F3-2.

çIf it is OK, go to step è3.

çIf NG, adjust the control cable.

è3. Manual running test

1.Disconnect the connector of the A/T ECU. Check the gear position of each range.
çIf it is OK, go to step è4.
çIf it is NG, go to step è5.
SPECIFIED VALUE:
Range H;G D I
Gear position Neutral 3rd Reverse

è4. Check of ECU power supply circuit

Refer to Page A1-24.

çIf OK, replace the A/T ECU. After the replacement, if the malfunction persists, proceed to è5.
çIf NG, repair the connector or circuit concerned.
F5–53
è5. Check of strainer
1.Replace the oil pan and strainer. Check the O-ring of the strainer for cut and wear.
çIf it is OK, go to step è6.
çIf NG, replace the O-ring of the strainer.
CAUTION
• The O-ring is a non-reusable part. Hence, even in the case of OK, replace the O-ring.
• The oil pan is a non-reusable part.

è6. Check and adjustment of manual valve

1.Check that the manual valve groove is aligned with the hole at the valve body in the G range.
Refer to Page F3-25.

çIf it is OK, go to step è7.

çIf NG, adjust the manual valve.

è7. Check of solenoid No.2 unit (Operation)

Refer to Page F5-77.

çIf it is OK, go to step è8.

çIf NG, replace the solenoid No.2.

è8. Replacement of valve body

Refer to Page F3-25.

SPECIFIED VALUE: The vehicle returns to the normal state.

çIf OK, finish the trouble shooting.

çIf NG, repair or replace the A/T Ay.
(7) The clutch is slipping during the 2nd gear running.
è1. Check of oil level
Refer to Page F3-1.

çIf it is OK, go to step è2.

çIf NG, adjust the oil level.

è2. Manual running test

1.Disconnect the connector of the A/T ECU. Check the gear position of each range.
çIf it is OK, go to step è3.
çIf it is NG, go to step è4.
SPECIFIED VALUE:
Range H;G D I
Gear position Neutral 3rd Reverse

è3. Check of ECU power supply circuit

Refer to Page A1-24..................................

çIf OK, replace the A/T ECU. After the replacement, if the malfunction persists, proceed to è4.
çIf NG, repair the connector or circuit concerned.
 F5–54
è4. Check of strainer
1.Remove the oil pan and strainer. Check the strainer O-ring for cut and wear.
çIf it is OK, go to step è5.
çIf NG, replace the strainer O-ring.
CAUTION
• The O-ring is a non-reusable part. Hence, even in the case of OK, replace the O-ring.
• The O-ring is a non-reusable part.

è5. Check and adjustment of manual valve

1.Check that the manual valve groove is aligned with the hole at the valve body in the G range.
çIf it is OK, go to step è6.
çIf NG, adjust the manual valve.

è6. Check of solenoid No1, solenoid No.2 units (Operation)

Refer to Page F5-77.

Refer to Page F5-77.

çIf it is OK, go to step è7.

çIf NG, replace the solenoid concerned.

è7. Check of the 2nd & 4th brake cylinder seal

Refer to Page F3-25.

1.Check the 2nd & 4th brake cylinder seal for cut or wear.
çIf it is OK, go to step è8.
çIf NG, replace the 2nd & 4th brake cylinder seal.
CAUTION
• The 2nd & 4th brake cylinder seal is a non-reusable part. Hence, even in the case of OK, replace
the seal.

è8. Replacement of valve body

Refer to Page F3-25.

SPECIFIED VALUE: The vehicle returns to the normal state.

çIf OK, finish the trouble shooting.

çIf NG, repair or replace the A/T Ay.
(8) The clutch is slipping during the 3rd gear running.
è1. Check of oil level
Refer to Page F3-1.

çIf it is OK, go to step è2.

çIf NG, adjust the oil level.
F5–55
è2. Manual running test
1.Disconnect the connector of the A/T ECU. Check the gear position of each range.
çIf it is OK, go to step è3.
çIf it is NG, go to step è4.
SPECIFIED VALUE:
Range H;G D I
Gear position Neutral 3rd Reverse

è3. Check of ECU power supply circuit

Refer to Page A1-24.

çIf OK, replace the A/T ECU. After the replacement, if the malfunction persists, proceed to è4.
çIf NG, repair the connector or circuit concerned.

è4. Check of strainer

1.Remove the oil pan and strainer. Check the strainer O-ring for cut and wear.
çIf it is OK, go to step è5.
çIf NG, replace the strainer O-ring.
CAUTION
• The O-ring is a non-reusable part. Hence, even in the case of OK, replace the O-ring.

è5. Check and adjustment of manual valve

1.Check that the manual valve groove is aligned with the hole at the valve body in the G range.
Refer to Page F3-25.

çIf it is OK, go to step è6.

çIf NG, adjust the manual valve.

è6. Check of solenoid No2, solenoid No.3 and switch solenoid unit (Operation)
Refer to Page F5-77.

Refer to Page F5-78.

çIf it is OK, go to step è7.

çIf NG, replace the solenoid concerned.

è7. Replacement of valve body

Refer to Page F3-25.

SPECIFIED VALUE: The vehicle returns to the normal state.

çIf OK, finish the trouble shooting.

çIf NG, repair or replace the A/T Ay.
(9) The clutch is slipping during the 4th gear running.
è1. Check of oil level
Refer to Page F3-1.

çIf it is OK, go to step è2.

çIf NG, adjust the oil level.
 F5–56
è2. Manual running test
1.Disconnect the connector of the A/T ECU. Check the gear position of each range.
çIf it is OK, go to step è3.
çIf it is NG, go to step è4.
SPECIFIED VALUE:
Range H;G D I
Gear position Neutral 3rd Reverse

è3. Check of ECU power supply circuit

Refer to Page A1-24.

çIf OK, replace the A/T ECU. After the replacement, if the malfunction persists, proceed to the è4.
çIf NG, repair the connector or circuit concerned.

è4. Check of strainer

1.Remove the oil pan and strainer. Check the strainer O-ring for cut or wear.
çIf it is OK, go to step è5.
çIf NG, replace the O-ring of the strainer.
CAUTION
• The O-ring is a non-reusable part. Hence, even in the case of OK, replace the O-ring.

è5. Check and adjustment of manual valve

1.Check that the manual valve groove is aligned with the hole at the valve body in the G range.
Refer to Page F3-25.

çIf it is OK, go to step è6.

çIf NG, adjust the manual valve.

è6. Check of solenoid No.1, solenoid No.3 and switch solenoid unit (Operation)
Refer to Page F5-77.

Refer to Page F5-77.

Refer to Page F5-78.

çIf it is OK, go to step è7.

çIf NG, replace the solenoid concerned.

è7. Check of 2nd & 4th brake cylinder seal

Refer to Page F3-25.

1.Check the 2nd & 4th brake cylinder seal for cut or wear.
çIf it is OK, go to step è8.
çIf NG, replace the 2nd & 4th brake cylinder seal.
CAUTION
• The 2nd & 4th brake cylinder seal is a non-reusable part. Hence, even in the case of OK, replace
the seal.
F5–57
è8. Replacement of valve body
Refer to Page F3-25.

SPECIFIED VALUE: The vehicle returns to the normal state.

çIf OK, finish the trouble shooting.

çIf NG, repair or replace the A/T Ay.
(10) The clutch is slipping during the I range running.
è1. Check of oil level
Refer to Page F3-1.

çIf it is OK, go to step è2.

çIf NG, adjust the oil level.

è2. Check and adjustment of control cable

Refer to Page F3-2.

çIf it is OK, go to step è3.

çIf NG, adjust the control cable.

è3. Manual running test

1.Disconnect the connector of the A/T ECU. Check the gear position of each range.
çIf it is OK, go to step è4.
çIf it is NG, go to step è5.
SPECIFIED VALUE:
Range H;G D I
Gear position Neutral 3rd Reverse

è4. Check of ECU power supply circuit

Refer to Page A1-24.

çIf OK, replace the A/T ECU. After the replacement, if the malfunction persists, proceed to the è5.
çIf NG, repair the connector or circuit concerned.

è5. Check of strainer

1.Remove the oil pan and strainer. Check the strainer O-ring for cut or wear.
çIf it is OK, go to step è6.
çIf NG, replace the O-ring of the strainer.
CAUTION
• The O-ring is a non-reusable part. Hence, even in the case of OK, replace the O-ring.

è6. Check and adjustment of manual valve

1.Check that the manual valve groove is aligned with the hole at the valve body in the G range.
Refer to Page F3-25.

çIf it is OK, go to step è7.

çIf NG, adjust the manual valve.
 F5–58
è7. Check of solenoid No.3 and duty solenoid unit (Operation)
Refer to Page F5-77.

Refer to Page F5-77.

çIf it is OK, go to step è8.

çIf NG, replace the solenoid concerned.

è8. Replacement of valve body

Refer to Page F3-25.

SPECIFIED VALUE: The vehicle returns to the normal state.

çIf OK, finish the trouble shooting.

çIf NG, repair or replace the A/T Ay.
(11) The vehicle starts to move in the H or G range.
è1. Check and adjustment of control cable
Refer to Page F3-2.

çIf it is OK, go to step è2.

çIf NG, adjust the control cable.

è2. Check and adjustment of manual valve

1.Remove the oil pan. Check that the manual valve groove is aligned with the hole at the valve body in
the G range.
Refer to Page F3-25.

CAUTION
• The oil pan is a non-reusable part.

çIf OK, replace the A/T Ay.

çIf NG, adjust the manual valve.
(12) When the engine speed is raised in the G range, the vehicle starts to move.
1.Repair or replace the A/T Ay.
(13) The engine starts in ranges other than H;G.
è1. Check and adjustment of neutral start switch
Refer to Page F3-3.

çIf it is OK, go to step è2.

çIf NG, adjust the neutral start switch position.

è2. Check and adjustment of control cable

Refer to Page F3-2.
F5–59
(14) No gear shifting takes place (Kept in the 1st gear)
è1. Check of duty solenoid unit (Operation)
Refer to Page F5-77.

çIf OK, replace the valve body.

çIf NG, replace the duty solenoid.
(15) No gear shifting takes place (Kept in the 3rd gear)
è1. Check of ECU power supply circuit
Refer to Page A1-24.

çIf OK, replace the A/T ECU.

çIf NG, repair the connector or circuit concerned.
(16) The vehicle starts off from the 2nd gear
è1. Check of stop lamp switch unit
Refer to Page E3-36.

çIf it is OK, go to step è2.

çIf NG, replace the stop lamp switch.

è2. Check of ECU power supply circuit

Refer to Page A1-24.

çIf OK, replace the A/T ECU.

çIf NG, repair the connector or circuit concerned.
(17) Gear shifting shock ; time lag large (G!D)
è1. Check of oil level
Refer to Page F3-1.

çIf it is OK, go to step è2.

çIf NG, adjust the oil level.

è2. Check of stop lamp switch unit

Refer to Page E3-36.

çIf it is OK, go to step è3.

çIf NG, replace the stop lamp switch.

è3. Check of ECU power supply circuit

Refer to Page A1-24.

çIf OK, replace the A/T ECU. After the replacement, if the malfunction persists, proceed to the è4.
çIf NG, repair the connector or circuit concerned.
 F5–60
è4. Check of strainer
1.Remove the oil pan and strainer. Check the strainer O-ring for cut or wear.
çIf it is OK, go to step è5.
çIf NG, replace the O-ring of the strainer.
CAUTION
• The O-ring is a non-reusable part. Hence, even in the case of OK, replace the O-ring.
• The oil pan is a non-reusable part.

è5. Check of solenoid No.2, duty solenoid unit (Operation)

Refer to Page F5-77.

Refer to Page F5-77.

çIf it is OK, go to step è6.

çIf NG, replace the solenoid concerned.

è6. Replacement of valve body

Refer to Page F3-25.

SPECIFIED VALUE: The vehicle returns to the normal state.

çIf OK, finish the trouble shooting.

çIf NG, repair or replace the A/T Ay.
(18) Gear shifting shock ; time lag large (G!I)
è1. Check of oil level
Refer to Page F3-1.

çIf it is OK, go to step è2.

çIf NG, adjust the oil level.

è2. Check of ECU power supply circuit

Refer to Page A1-24.

çIf OK, replace the A/T ECU. After the replacement, if the malfunction persists, proceed to the è3.
çIf NG, repair the connector or circuit concerned.

è3. Check of strainer

1.Remove the oil pan and strainer. Check the strainer O-ring for cut or wear.
çIf it is OK, go to step è4.
çIf NG, replace the O-ring of the strainer.
CAUTION
• The O-ring is a non-reusable part. Hence, even in the case of OK, replace the O-ring.
• The oil pan is a non-reusable part.

è4. Check of solenoid No.3, duty solenoid unit (Operation)

Refer to Page F5-77.

çIf it is OK, go to step è5.

çIf NG, replace the solenoid concerned.
F5–61
è5. Replacement of valve body
Refer to Page F3-25.

SPECIFIED VALUE: The vehicle returns to the normal state.

çIf OK, finish the trouble shooting.

çIf NG, repair or replace the A/T Ay.
 F5–62
(19) Gear shifting shock ; time lag large (1st#2nd)
è1. Check of oil level
Refer to Page F3-1.

çIf it is OK, go to step è2.

çIf NG, adjust the oil level.

è2. Check of ECU power supply circuit

Refer to Page A1-24.

çIf OK, replace the A/T ECU. After the replacement, if the malfunction persists, proceed to the è3.
çIf NG, repair the connector and circuit concerned.

è3. Check of strainer

1.Remove the oil pan and strainer. Check the strainer O-ring for cut or wear.
çIf it is OK, go to step è4.
çIf NG, replace the O-ring of the strainer.
CAUTION
• The O-ring is a non-reusable part. Hence, even in the case of OK, replace the O-ring.
• The oil pan is a non-reusable part.

è4. Check of solenoid No.1 unit (Operation)

Refer to Page F5-77.

çIf it is OK, go to step è5.

çIf NG, replace the solenoid No.1.

è5. Check of 2nd & 4th brake cylinder seal

Refer to Page F3-25.

1.Check the 2nd & 4th brake cylinder seal for cut or wear.
çIf it is OK, go to step è6.
çIf NG, replace the 2nd & 4th brake cylinder seal.
CAUTION
• The 2nd & 4th brake cylinder seal is a non-reusable part.Hence, even in the case of OK, replace
the seal.

è6. Replacement of valve body

Refer to Page F3-25.

SPECIFIED VALUE: The vehicle returns to the normal state.

çIf OK, finish the trouble shooting.

çIf NG, repair or replace the A/T Ay.
(20) Gear shifting shock ; time lag large (2nd#3rd)
è1. Check of oil level
Refer to Page F3-1.

çIf it is OK, go to step è2.

çIf NG, adjust the oil level.
F5–63
è2. Check of ECU power supply circuit
Refer to Page A1-24.

çIf OK, replace the A/T ECU. After the replacement, if the malfunction persists, proceed to the è3.
çIf NG, repair the connector or circuit concerned.

è3. Check of strainer

1.Remove the oil pan and strainer. Check the strainer O-ring for cut or wear.
çIf it is OK, go to step è4.
çIf NG, replace the O-ring of the strainer.
CAUTION
• The O-ring is a non-reusable part. Hence, even in the case of OK, replace the O-ring.
• The oil pan is a non-reusable part.

è4. Check of solenoid No.3 and solenoid No.1 unit (Operation)

Refer to Page F5-77.

Refer to Page F5-77.

çIf it is OK, go to step è5.

çIf NG, replace the solenoid concerned.

è5. Check of 2nd & 4th brake cylinder seal

Refer to Page F3-25.

1.Check the 2nd & 4th brake cylinder seal for cut or wear.
çIf it is OK, go to step è6.
çIf NG, replace the 2nd & 4th brake cylinder seal.
CAUTION
• The 2nd & 4th brake cylinder seal is a non-reusable part. Hence, even in the case of OK, replace
the seal.

è6. Replacement of valve body

Refer to Page F3-25.

SPECIFIED VALUE: The vehicle returns to the normal state.

çIf OK, finish the trouble shooting.

çIf NG, repair or replace the A/T Ay.
(21) Gear shifting shock; time lag large (3rd#4th)
è1. Check of oil level
Refer to Page F3-1.

çIf it is OK, go to step è2.

çIf NG, adjust the oil level.
 F5–64
è2. Check of ECU power supply circuit
Refer to Page A1-24.

çIf OK, replace the A/T ECU. After the replacement, if the malfunction persists, proceed to the è3.
çIf NG, repair the connector or circuit concerned.

è3. Check of strainer

1.Remove the oil pan and strainer. Check the strainer O-ring for cut or wear.
çIf it is OK, go to step è4.
çIf NG, replace the O-ring of the strainer.
CAUTION
• The O-ring is a non-reusable part. Hence, even in the case of OK, replace the O-ring.
• The oil pan is a non-reusable part.

è4. Check of solenoid No.1, solenoid No.2 and switch solenoid unit (Operation)
Refer to Page F5-77.

Refer to Page F5-77.

Refer to Page F5-78.

çIf it is OK, go to step è5.

çIf NG, replace the solenoid concerned.

è5. Check of the 2nd & 4th brake cylinder seal

Refer to Page F3-25.

1.Check the 2nd & 4th brake cylinder seal for cut or wear.
çIf it is OK, go to step è6.
çIf NG, replace the 2nd & 4th brake cylinder seal.
CAUTION
• The 2nd & 4th brake cylinder seal is a non-reusable part. Hence, even in the case of OK, replace
the seal.

è6. Replacement of valve body

Refer to Page F3-25.

SPECIFIED VALUE: The vehicle returns to the normal state.

çIf OK, finish the trouble shooting.

çIf NG, repair or replace the A/T Ay.
(22) Engine racing during gear shifting (2nd!3rd
è1. Check of solenoid No.1 unit (Operation)
Refer to Page F5-77.

çIf it is OK, go to step è2.

çIf NG, replace the solenoid No.1.
F5–65
è2. Check of ECU power supply circuit
Refer to Page A1-24.

çIf OK, replace the A/T ECU. After the replacement, if the malfunction persists, proceed to the è3.
çIf NG, repair the connector or circuit concerned.

è3. Check of 2nd & 4th brake cylinder seal

Refer to Page F3-25.

1.Check the 2nd & 4th brake cylinder seal for cut or wear.
çIf it is OK, go to step è4.
çIf NG, replace the 2nd & 4th brake cylinder seal.
CAUTION
• The 2nd & 4th brake cylinder seal is a non-reusable part. Hence, even in the case of OK, replace
the seal.

è4. Replacement of valve body

Refer to Page F3-25.

SPECIFIED VALUE: The vehicle returns to the normal state.

çIf OK, finish the trouble shooting.

çIf NG, repair or replace the A/T Ay.
(23) The engine racing during the gear shifting (3rd!4th)
è1. Check of solenoid No.2 unit (Operation)
Refer to Page F5-77.

çIf it is OK, go to step è2.

çIf NG, replace the solenoid No.2.

è2. Check of ECU power supply circuit

Refer to Page A1-24.

çIf OK, replace the A/T ECU. After the replacement, if the malfunction persists, proceed to the è3.
çIf NG, repair the connector or circuit concerned.

è3. Check of 2nd & 4th brake cylinder seal

Refer to Page F3-25.

1.Check the 2nd & 4th brake cylinder seal for cut or wear.
çIf it is OK, go to step è4.
çIf NG, replace the 2nd & 4th brake cylinder seal.
CAUTION
• The 2nd & 4th brake cylinder seal is a non-reusable part. Hence, even in the case of OK, replace
the seal.
 F5–66
è4. Replacement of valve body
Refer to Page F3-25.

SPECIFIED VALUE: The vehicle returns to the normal state.

çIf OK, finish the trouble shooting.

çIf NG, repair or replace the A/T Ay.
(24) The gear shifting takes place only for 1st#3rd
è1. Check of ECU power supply circuit
Refer to Page A1-24.

çIf OK, replace the A/T ECU. After the replacement, if the malfunction persists, proceed to the è2.
çIf NG, repair the connector or circuit concerned.

è2. Replacement of valve body

Refer to Page F3-25.

SPECIFIED VALUE: The vehicle returns to the normal state.

çIf OK, finish the trouble shooting.

çIf NG, repair or replace the A/T Ay.
F5–67
3-15 UNIT CHECK
3-15-1 TURBINE REVOLUTION SENSOR,OUTPUT REVOLUTION SENSOR
1.As for the turbine revolution sensor and output revolution sensor, it is impossible to evaluate good/bad
of their individual performance because of their construction. Hence, make a total evaluation, using
the trouble-shooting according to diagnosis codes (No.37, 42) and transmission control computer
input / output signal check (Oscilloscope waveform ).
Refer to Page F5-31.

Refer to Page F5-34.

Refer to Page F5-79.

 F5–68
3-15-2 SOLENOID WIRE AY (INCLUDING OIR TEMPERA- 2LUCR 3LUCC
TURE SENSOR) 1SOLR

(1) In-vehicle Check

1.Disconnect the solenoid connector of the transaxle. 5OTMP
8C2+
2.Connect the SST to the transaxle.
SST: 09990-97201-000
3.Check of switch solenoid system 9E !2C2-
(1) Measure the resistance between the 1SOLR and the 6B1+
7C3B2+
!0B1- !1C3B2-
transmission ground. T04K5048T10
SPECIFIED VALUE: 16&2.0+(at time of 20°C)
(2) Connect the battery positive terminal to the 1SOLR
terminal. Connect the battery negative terminal to the
transmission ground. Check the solenoid for operat-
ing sound.
SPECIFIED VALUE: Emits a clicking sound.
CAUTION
• No spring is included in the switch solenoid valve.
Therefore, when it is necessary to operate it again
after it has been operated, once start the engine in the
P range. Then, after stopping, redo the operation.
• The operating sound is very small. Hence, it is neces-
sary to apply a sound scope or the like to the oil pan
so as to confirm it.
4.Check of LUC solenoid system
(1) Measure the resistance between the 2 LUCR and the
transmission ground
SPECIFIED VALUE: 16&2.0+(At time of 20°C)
(2) Connect the battery positive terminal to the 2LUCR.
Connect the battery negative terminal to the trans-
mission ground. Check the solenoid for operating
sound.
SPECIFIED VALUE: Emits a clicking sound.
CAUTION
• No spring is included in the switch solenoid valve.
Therefore, when it is necessary to operate it again
after it has been operated, once start the engine in the
P range. Then, after stopping, redo the operation.
• The operating sound is very small. Hence, it is neces-
sary to apply a sound scope or the like to the oil pan
so as to confirm it.
5.Check of duty solenoid system
(1) Measure the resistance between 3 LUCC and trans-
mission ground.
SPECIFIED VALUE: 12&1+(at time of 20°C)
(2) Connect the battery positive terminal to
the3LUCC.Connect the battery negative terminal to
the transmission ground.Check the solenoid for oper-
ating sound.
SPECIFIED VALUE: Emits a clicking sound.
F5–69
6.Check of oil temperature sensor system
(1) Measure the resistance between 5OTMP and 9E.
SPECIFIED VALUE: 5.63&0.56k+(0°C)
0.072&0.0022k+(140°C)

NOTE
• About 2.4k+(20°C)
about 0.313k+(80°C)

CAUTION
• The final evaluation shall be carried out in the next unit check given below.

7.Check of solenoid No.1 system

(1) Measure the resistance between 6B1' and !B1(.
SPECIFIED VALUE: 5.3&0.3+(At time of 20°C)

(2) Connect the battery positive terminal to the 6B1' with a bulb of 12V(21W interposed.Connect
the battery negative terminal to the !B1(. Check for the operating sound of the solenoid.
SPECIFIED VALUE: Emits a clicking sound.

CAUTION
• Never directly apply the battery voltage. (Do not allow a current of 1A or more to flow) Carry out
the operation check through the specified bulb (resistance).
• If a current of 1A or more is allowed to flow, the solenoid characteristics will be changed.

8.Check of solenoid No.2 system

(1) Measure the resistance between the 8C2' and the #C2(.
SPECIFIED VALUE: 5.3&0.2+(at time of 20°C)

(2) Connect the battery positive terminal to the 8C2' with a bulb of 12V(21W interposed. Connect
the battery negative terminal to the #C2(. Check for the operating sound of the solenoid.
SPECIFIED VALUE: Emits a clicking sound.

CAUTION
• Never directly apply the battery voltage. (Do not allow a current of 1A or more to flow.) Carry out
the operation check through the specified bulb (Resistance).
• If a current of 1A or more is allowed to flow, the solenoid characteristics will be changed.

9.Check of solenoid No.3 system

(1) 7C3B2' - "C3B2(
SPECIFIED VALUE: 5.3&0.2+(At time of 20°C)

(2) Connect the battery positive terminal to the 7C3B2' with a bulb of 12V(21W interposed.
Connect the battery negative terminal to the "C3B2(. Check for the operating sound of the sole-
noid.
SPECIFIED VALUE: Emits a clicking sound.
 F5–70
CAUTION
• Never directly apply the battery voltage. (Do not allow a current of 1A or more to flow.) Carry out
the operation check through the specified bulb (Resistance).
• If a current of 1 A or more is allowed to flow, the solenoid characteristics will be changed.

(2) Unit Check

1.Remove the solenoid wire Ay from the transaxle.
Refer to Page F3-25.

2.Check continuity between the following terminals given below.

SPECIFIED VALUE: Continuity exists.

(1) Switch solenoid system

Between solenoid connector 1 and switch solenoid connector 1 (SOLR)
(2) LUC solenoid system
Between solenoid connector 2 and LUC solenoid connector 1 (LUCR)
(3) Duty solenoid system
Between solenoid connector 3 and duty solenoid connector 1 (LUCC)
(4) Solenoid No.1 system
Between solenoid connector 6 and solenoid No.1 connector 1 (B1')
Between solenoid connector ! and solenoid No.1 connector 2 (B1()
(5) Solenoid No.2 system
Between solenoid connector 8 and solenoid No.2 connector 1 (C2')
Between solenoid connector # and solenoid No.2 connector 2 (C2()
(6) Solenoid No.3 system
Between solenoid connector 7 and solenoid No.3 connector 1 (C3B2')
Between solenoid connector " and solenoid No.3 connector 2 (C3B2()
3.Oil temperature sensor system
(1) Measure the resistance between solenoid connectors 5OTMP and 9E.
SPECIFIED VALUE: 5.63&0.56k+(0°C)
0.072&0.0022k+(140°C)

4.Ensure that there is no short-circuit between connector terminals.

Solenoid No.2 Solenoid No.1 Solenoid No.3 Duty solenoid connector

connector(Black) connector(White) connector(Black) (Yellow)
LUCR C2+ C2- B1- C3B2+ C3B2-
SOLR B1+ LUCC
LUCC Fluid temperature
sensor LUC solenoid
OTMP 1 2
1 2
1 2 1
connector
1 2 3
(Blue)
LUCR
5 6 7 8

9 10 11 12
1

SOLR
B1+ C2+
C2- 1
E C3B2+
Switch solenoid
C3B2- connector
B1-
Solenoid connector (Gray)
T0NK5002ES16
F5–71
3-15-3 SOLENOID NO.1
2 1
1.Operation check
(1) Connect the battery positive terminal to the terminal 1
( '
with a bulb of 12V(21W interposed. Connect the
battery negative terminal to the terminal 2. Check that
the valve inside the solenoid is working.
CAUTION (
'
• Never directly apply the battery voltage. (Do not allow
a current of 1A or more to flow.) Carry out the opera- T04K5034T10
tion check through the specified bulb (Resistance)
• If a current of 1A or more is allowed to flow, the sole-
noid characteristics will be changed.
2.Resistance check
(1) Measure the resistance between terminals 1 and 2.
SPECIFIED VALUE: 5.3&0.3+(At time of 20°C)
3-15-4 SOLENOID NO.2, SOLENOID NO.3
2 1
1.Operation check
(1) Connect the battery positive terminal to the terminal 1
( '
with a bulb of 12V(21W interposed. Connect the
battery negative terminal to the terminal 2. Check that
the valve inside the solenoid is working.
(
CAUTION '

• Never directly apply the battery voltage. (Do not allow

a current of 1A or more to flow.) Carry out the opera- T04K5033T10

tion check through the specified valve (Resistance)

• If a current of 1 A or more is allowed to flow, the sole-
noid characteristics will be changed.
2.Resistance check
(1) Measure the resistance between the terminals 1 and 2.
SPECIFIED VALUE: 5.3&0.2+(At time of 20°C)
3-15-5 DUTY SOLENOID
1.Operation check
(1) Connect the battery positive terminal to the solenoid terminal. Connect the battery negative termi-
nal to the solenoid body. Check that the valve inside the solenoid is working.
2.Resistance check
(1) Check the resistance between the solenoid terminal and solenoid body.
SPECIFIED VALUE: 12&1+(At time of 20°C)
 F5–72
3-15-6 LUC SOLENOID, SWITCH SOLENOID
1.Operation check
(1) Connect the battery positive terminal to the solenoid terminal. Connect the battery negative termi-
nal to the solenoid body. Check that the valve inside the solenoid is working.
CAUTION
• No spring is included in the LUC solenoid, switch solenoid valve. Therefore, when you want to
operate it again after it has been operated, shake the solenoid or return the valve position by push-
ing the ball. (When you want to return the valve position on the vehicle, start the engine in the P
range.)

2.Resistance check
(1) Check the resistance between the solenoid terminal and solenoid body.
SPECIFIED VALUE: 16&2.0+(at time of 20°C)

3-15-7 NEUTRAL START SWITCH

1.Carry out the continuity check, based on the connection
table.
:Continuity should exist

Shift position
Terminal No. E R RB P N D 2 L P D 2 R
P L RB E N
R

D
R11K6021T10
2

L
R11K6110EL10

3-15-8 O/D OFF SWITCH

1.Carry out the continuity check, based on the connection
table.
O/D switch

O/D( 2 1 O/D'
4 3

Terminal name O/D+ O/D-

Selection
O/D ON

O/D OFF

T11K5525ET16
F5–73
3-16 ECU INPUT/OUTPUT SIGNAL CHECK
3-16-1 CHECKING METHOD
1.Check the voltage, pulse and continuity between each terminal, using the SST.
SST: 09842-97215-000

2.As for those items where no specific measuring conditions are provided, perform checks with the
engine stopped and the IG SW turned ON.
 F5–74
3-16-2 SPECIFIED VALUE FOR INPUT/ OUTPUT SIGNAL
Reference
value
Check system Terminal Measuring condition Specified value (Example of
measured
value)
Turbine revolution
C10(RTBN)~B24(E1) When the engine is idling Pulse generation ~
sensor
Output revolution At the time when the vehicle speed is 20
C8(ROPT)(B24(E1) Pulse generation ~
sensor km/h
Turbine revolution
sensor power C9(VBTB)(B24(E1) Engine stopped, IG SW turned ON Battery voltage 13.3V
supply
Output revolution
sensor power C7(VBOP)(B24(E1) Engine stopped, IG SW turned ON Battery voltage 13.3V
supply
Engine revolution
B8(REG1)(B24(E1) When the engine is idling Pulse generation ~
signal
H range About 0V 0V
C15(P)(B24(E1)
Except for H range Battery voltage 12.1V
I range Battery voltage 11.2V
B7(R)(B24(E1)
Except for I range About 0V 0V
G range About 0V 0V
C24(N)(B24(E1)
NEUTRAL START Except for G range Battery voltage 11.9V
SWITCH D range About 0V 0V
C17(D)(B24(E1)
Except for D range Battery voltage 10.8V
L range About 0V 0V
C16(2)(B24(E1)
Except for L range Battery voltage 12.4V
F range About 0V 0V
C25(L)(B24(E1)
Except for F range Battery voltage 12.3V
At time when the oil temperature is 20 About 3.4V (
Oil temperature C14(OTMP)(C13(ETM
At the time when the oil temperature is
sensor system P) About 1.1V
80
During non-energizing period About 0V 0V
Solenoid No.1 C6(B1')(C5(B1()
During energizing period Pulse generation ~
During non-energizing period About 0V 0V
Solenoid No.2 C4(C2')(C3(C2()
During energizing period Pulse generation ~
C2(C3B2')(C1(C3B2 During non-energizing period About 0V 0V
Solenoid No.3
() During energizing period Pulse generation ~
Lock-up OFF period About 0V 0V
Duty solenoid C23(LUCC)(B6(E01)
Slip lock-up period Pulse generation ~
During non-energizing period About 0V 0V
LUC solenoid C11(LUCR)(B6(E01)
During energizing period Battery voltage 12.6V
During non-energizing period About 0V 0V
Switch solenoid C12(SOLR)(B6(E01)
During energizing period Battery voltage 12.6V
B3('B1)(B6(E01) Engine stopped, IG SW turned ON Battery voltage 12.3V
Power supply B2(BAT1)(B6(E01) At all times Battery time 12.5V
B1(BAT2)(B6(E01) At all times Battery voltage 12.5V
Continuity
B7(R)(Body ground At all times Continuity exists.
exists.
Continuity
Ground B6(E01)(Body ground At all times Continuity exists.
exists.
Continuity
B5(E02)(Body ground At all times Continuity exists.
exists.

~:Refer to the oscilloscope waveforms indicated in the following Item given below.
F5–75
3-16-3 OSCILLOSCOPE WAVEFORMS
Waveforms measured by the oscilloscope function of the diagnosis tester (DS-21) are shown below as ref-
erence.
(1) Turbine revolution sensor
1.Measuring terminals C10(RTBN)(B24(E1)
2.Measuring conditions: During engine idling period:
(Measured waveform is the one at the time of 1360rpm)
3.Measuring range : 5V (voltage axis), 1mS (time axis)
4.The more the turbine revolution speed, the shorter the
period.

T04K5041T10

(2) Output revolution sensor

1.Measuring terminals C8(ROPT)(B24(E1)
2.Measuring conditions: The vehicle speed is about 20
km/h.
3.Measuring range : 5V (Voltage axis), 1mS (Time axis)
4.The more the output revolution speed (Vehicle speed), the
shorter the period.

T11K5060T10

(3) Engine revolution signal waveform

1.Measuring terminals B8(REG1)(B24(E1)
2.Measuring conditions: During engine idling period:
(Measurement waveform is the one at the time of 1100
rpm)
3.Measuring range : 5V (Voltage axis), 5mS (Time axis)
4.The more the engine revolution speed, the shorter the peri-
od.
T11K5061T10

(4) Solenoid No.1

1.Measuring terminals C6(B1')(C5(B1()
2.Measuring conditions: During energizing period
3.Measuring range : 5V (Voltage axis), 1mS (Time axis)
4.The duty ratio becomes smaller during the gear shift tran-
sient period.
5.The waveform frequency: 300 Hz

T04K5042T10

(5) Solenoid No.2

1.Measuring terminals C4(C2')(C3(C2()
2.Measuring conditions: During energizing period
3.Measuring range : 5V (Voltage axis), 1mS (time )
4.The duty ratio becomes smaller during the gear shift tran-
sient period.
5.The waveform frequency: 300 Hz

T04K5042T10
 F5–76
(6) Solenoid No.3
1.Measuring terminals C2(C3B2')(C1(C3B2()
2.Measuring conditions: During energizing period
3.Measuring range : 5V (Voltage axis), 1mS (Time axis)
4.The duty ratio becomes smaller during the gear shift tran-
sient period and line pressure regulating period
5.The waveform frequency: 300 Hz

T04K5042T10

(7) Duty solenoid

1.Measuring terminals C23(LUCC)(B6(E01)
2.Measuring conditions: Slip lock-up time period
3.Measuring range : 5V (Voltage axis), 5mS (Time axis)
4.The duty ratio becomes 100% during the direct lock-up
period.
5.The waveform frequency: 60 Hz

T04K5043T10

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