Mitsubishi Grandis. Manual - part 950

TROUBLESHOOTING

TRACTION CONTROL/ACTIVE STABILITY CONTROL SYSTEM

35C-125

DIAGNOSIS

STEP 1. MUT-III CAN bus diagnostics

CAUTION

Before connecting or disconnecting the MUT-III, 
turn the ignition switch to the "LOCK" (OFF) 
position.
Use MUT-III to diagnose the CAN bus lines.
(1) Connect MUT-III to the 16-pin diagnosis 

connector.

(2) Turn the ignition switch to the "ON" position.
(3) Diagnose the CAN bus line.

Q: Is the check result normal?

YES : 

Check and repair the power supply circuit 

system (Refer to 

P.35B-65

).   

NO : 

Repair the CAN bus lines (Refer to GROUP 
54D, CAN bus line Diagnostic flow 

P.54D-9

). 

AC302297

AC310120

AB

MB991827

16-pin

MB991910

MB991824

TROUBLESHOOTING

TRACTION CONTROL/ACTIVE STABILITY CONTROL SYSTEM

35C-126

INSPECTION PROCEDURE 2: Communication between Scan Tool and the steering wheel sensor is 
not possible.

<LH drive vehicles>

IGNITION 
SWITCH (IG1)

DIAGNOSIS 
CONNECTOR

FRONT SIDE

POWER
SUPPLY

TCL/ASC-ECU

Wire colour code
B : Black     LG : Light green     G : Green     L : Blue     W : White     Y : Yellow     SB : Sky blue
BR : Brown     O : Orange     GR : Gray     R : Red     P : Pink     V : Violet

Data Link Connector Circuit

TROUBLESHOOTING

TRACTION CONTROL/ACTIVE STABILITY CONTROL SYSTEM

35C-127

<RH drive vehicles>

TECHNICAL DESCRIPTION (COMMENT)

If the MUT-III can not communicate with the steering 
wheel sensor, the CAN bus lines may be defective. If 
the ASC system does not work, the steering wheel 
sensor or its power supply circuit may be defective. 

PROBABLE CAUSES

• Damaged wiring harness or connector

• Malfunction of the steering wheel sensor

IGNITION 
SWITCH (IG1)

DIAGNOSIS 
CONNECTOR

POWER
SUPPLY

TCL/ASC-ECU

Wire colour code
B : Black     LG : Light green     G : Green     L : Blue     W : White     Y : Yellow     SB : Sky blue
BR : Brown     O : Orange     GR : Gray     R : Red     P : Pink     V : Violet

FRONT SIDE

Data Link Connector Circuit

TROUBLESHOOTING

TRACTION CONTROL/ACTIVE STABILITY CONTROL SYSTEM

35C-128

DIAGNOSIS

STEP 1. MUT-III CAN bus diagnostics

CAUTION

Before connecting or disconnecting the MUT-III, 
turn the ignition switch to the "LOCK" (OFF) 
position.
Use MUT-III to diagnose the CAN bus lines.
(1) Connect MUT-III to the 16-pin diagnosis 

connector.

(2) Turn the ignition switch to the "ON" position.
(3) Diagnose the CAN bus line.

Q: Is the check result normal?

YES : 

Check and repair the power supply circuit 

system (Refer to 

P.35C-135

).   

NO : 

Repair the CAN bus lines  (Refer to GROUP 
54D, CAN bus line Diagnostic flow 

P.54D-9

). 

AC302297

AC310120

AB

MB991827

16-pin

MB991910

MB991824