Mitsubishi Grandis. Manual - part 936

TROUBLESHOOTING

TRACTION CONTROL/ACTIVE STABILITY CONTROL SYSTEM

35C-69

STEP 7. Check the harness wire between 
TCL/ASC-ECU connector A-04 terminal 31 and G 
and yaw rate sensor connector C-117 terminal 5.

TROUBLESHOOTING

TRACTION CONTROL/ACTIVE STABILITY CONTROL SYSTEM

35C-70

NOTE: After inspecting the TCL/ASC-ECU 
connector A-04, intermediate connector A-16 and G 
and yaw rate sensor connector C-117, inspect the 
wire. If any of these connector is damaged, repair or 
replace it. Then go to Step 10.

Q: Is the check result normal?

YES : 

Go to Step 8.

NO : 

Repair it and go to Step 10.

STEP 8. Check whether the diagnosis code is 
reset.

CAUTION

Before connecting or disconnecting the MUT-III, 
turn the ignition switch to the "LOCK" (OFF) 
position.
Replace the G and yaw rate sensor, and check 
whether diagnosis code C1366 or C1371 is reset.
(1) Replace the G and yaw rate sensor.
(2) Connect MUT-III to the 16-pin diagnosis 

connector.

(3) Turn the ignition switch to the "ON" position.

AC312621

Oil reservoir

Connector: A-04

AB

A-04

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

A-04 Harness connector
(harness side)

AC312624AF

Connector: C-117
<L.H.drive vehicles>

C-117

C-117 Harness connector
(harness side)

AC312625AF

Connector: C-117
<R.H.drive vehicles>

C-117

C-117 Harness connector
(harness side)

AC312617AC

Connector: A-16
<L.H.drive vehicles>

A-16(B)

AC312619AC

Connector: A-16
<R.H.drive vehicles>

A-16(B)

AC302297

AC310120

AB

MB991827

16-pin

MB991910

MB991824

TROUBLESHOOTING

TRACTION CONTROL/ACTIVE STABILITY CONTROL SYSTEM

35C-71

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

position.

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

position.

Q: Is code No.C1366 or C1371 set? 

YES : 

Replace the hydraulic unit (integrated with 

TCL/ASC-ECU). Then go to Step 10.

NO : 

The procedure is complete.

STEP 9. 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) Erase the diagnosis code.
(3) Turn the ignition switch to the "LOCK" (OFF) 

position.

(4) Turn the ignition switch to the "ON" position.
(5) Check if the diagnosis code is set.
(6) Turn the ignition switch to the "LOCK" (OFF) 

position.

Q: Is code No.C1366 or C1371 set?

YES : 

Replace the hydraulic unit (integrated with 

TCL/ASC-ECU). Then go to Step 10.

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 10. Recheck for diagnosis code.

Check again if the diagnosis code is set.
(1) Turn the ignition switch to the "ON" position.
(2) Erase the diagnosis code.
(3) Turn the ignition switch to the "LOCK" (OFF) 

position.

(4) Turn the ignition switch to the "ON" position.
(5) Check if the diagnosis code is set.
(6) Turn the ignition switch to the "LOCK" (OFF) 

position.

Q: Is code No.C1366 or C1371 set?

YES : 

Go to Step 1.

NO : 

The procedure is complete.

AC302297

AC310120

AB

MB991827

16-pin

MB991910

MB991824

AC302297

AC310120

AB

MB991827

16-pin

MB991910

MB991824

TROUBLESHOOTING

TRACTION CONTROL/ACTIVE STABILITY CONTROL SYSTEM

35C-72

Code No.C1377: Sensor cluster communication abnormality

CAUTION

If there is any problem in the CAN bus lines, an 
incorrect diagnosis code may be set. Prior to this 
diagnosis, diagnose the CAN bus lines.

OPERATION

• The G and yaw rate sensor is energized by the 

TCL/ASC-ECU and the G and yaw rate sensor 
terminal 1.

• The G and yaw rate sensor output signal is sent 

to the TCL/ASC-ECU via the private CAN bus 
line.

DIAGNOSIS CODE SET CONDITIONS

This code is set when the signal from the G and yaw 
rate sensor is not normal.

PROBABLE CAUSES

• Malfunction of the G and yaw rate sensor

• Damaged wiring harness or connector

• Malfunction of the hydraulic unit (integrated with 

TCL/ASC-ECU)

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   

G AND YAW 
LATE SENSOR

G and Yaw Late Sensor Circuit