Mitsubishi Grandis. Manual - part 927

TROUBLESHOOTING

TRACTION CONTROL/ACTIVE STABILITY CONTROL SYSTEM

35C-33

STEP 13. Check TCL/ASC-ECU connector A-04, 
intermediate connector C-16, C-124, D-28 and 
wheel speed sensor <rear: LH> connector D-14 
for loose, corroded or damaged terminals, or 
terminals pushed back in the connector.

TROUBLESHOOTING

TRACTION CONTROL/ACTIVE STABILITY CONTROL SYSTEM

35C-34

Q: Is the check result normal?

NO : 

Repair or replace the damaged 
component(s). Then go to Step 15.

YES : 

Open or short circuit may be present in the 

rear left wheel speed sensor circuit. Repair 
the wiring harness between TCL/ASC-ECU 
connector A-04 (terminals 36 and 37) and 
rear left wheel speed sensor D-14 
(terminals 1 and 2). Then go to Step 15.

STEP 14. Check whether the diagnosis code is 
reset.

Check again if the diagnosis code is set.
(1) Turn the ignition switch to the "ON" position.
(2) Drive the vehicle at 20km/h or more for 30 

seconds or more.

(3) Erase the diagnosis code.
(4) Turn the ignition switch to the "LOCK" (OFF) 

position.

(5) Turn the ignition switch to the "ON" position.
(6) Drive the vehicle at 20km/h or more for 30 

seconds or more.

AC312621

Oil reservoir

Connector: A-04

AB

A-04

Hydraulic unit
(with built-in TCL/ASC-ECU)

A-04 Harness connector
(harness side)

AC312624

Connectors: C-16, C-124 <L.H.drive vehicles>

C-16

AB

C-124

AC312625

Connectors: C-16, C-124 <R.H.drive vehicles>

C-16

AB

C-124

AC312622

Connectors: D-06, D-14, D-28
<L.H.drive vehicles>

D-06 (B)

AD

D-14 (B)

D-28

D-14 Harness
connector
(harness side)

AC312623

Connectors: D-06, D-14, D-28
<R.H.drive vehicles>

D-06 (B)

AB

D-14 (B)

D-28

D-14 Harness
connector
(harness side)

AC302297

AC310120

AB

MB991827

16-pin

MB991910

MB991824

TROUBLESHOOTING

TRACTION CONTROL/ACTIVE STABILITY CONTROL SYSTEM

35C-35

(7) Check if the diagnosis code is set.
(8) Turn the ignition switch to the "LOCK" (OFF) 

position.

Q: Is code No.C1201, C1206, C1211 or C1216 set?

YES : 

Replace the hydraulic unit (integrated with 

TCL/ASC-ECU). Then go to Step 15.

NO : 

It can be assumed that this malfunction is 
intermittent. Refer to GROUP 00, How to 
Use Troubleshooting/Inspection Service 
Points 

− How to Cope with Intermittent 

Malfunction 

P.00-5

.

STEP 15. Check whether the diagnosis code is 
reset.

Check again if the diagnosis code is set.
(1) Turn the ignition switch to the "ON" position.

(2) Drive the vehicle at 20km/h or more for 30 

seconds or more.

(3) Erase the diagnosis code.
(4) Turn the ignition switch to the "LOCK" (OFF) 

position.

(5) Turn the ignition switch to the "ON" position.
(6) Drive the vehicle at 20km/h or more for 30 

seconds or more.

(7) Check if the diagnosis code is set.
(8) Turn the ignition switch to the "LOCK" (OFF) 

position.

Q: Is code No.C1201, C1206, C1211 or C1216 set?

YES : 

Go to Step 1.

NO : 

The procedure is complete.

AC302297

AC310120

AB

MB991827

16-pin

MB991910

MB991824

TROUBLESHOOTING

TRACTION CONTROL/ACTIVE STABILITY CONTROL SYSTEM

35C-36

Code No.C1226: Control solenoid valve (FR) pressure holding system
Code No.C1236: Control solenoid valve (FL) pressure holding system
Code No.C1246: Control solenoid valve (RR) pressure holding system
Code No.C1256: Control solenoid valve (RL) pressure holding system
Code No.C1300: Front-right cut valve (Primary)
Code No.C1310: Front-left cut valve (secondly)
Code No.C1231: Control solenoid valve (FR) decompressing system
Code No.C1241: Control solenoid valve (FL) pressure reducing system
Code No.C1251: Control solenoid valve (RR) pressure reducing system
Code No.C1261: Control solenoid valve (RL) decompressing system
Code No.C1305: Front-right suction valve (Primary)
Code No.C1315: Front-left suction valve (secondly)

AC313584

3

FUSIBLE 
LINK

FUSIBLE 
LINK

HYDRAULIC UNIT

SOLENOID VALVE

SOLENOID 
VALVE POWER 
SOURCE

MOTOR 
POWER SOURCE

SOLENOID
VALVE POWER
SOURCE

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   

4

TCL/ASC-ECU

Solenoid Valve and Motor Power Supply Circuit

AB