Mitsubishi Grandis. Manual - part 944

TROUBLESHOOTING

TRACTION CONTROL/ACTIVE STABILITY CONTROL SYSTEM

35C-101

STEP 6. Check the harness wire between 
TCL/ASC-ECU connector A-04 terminal 31 and G 
and yaw late sensor connector C-117 terminal 5.

TROUBLESHOOTING

TRACTION CONTROL/ACTIVE STABILITY CONTROL SYSTEM

35C-102

NOTE: After inspecting the TCL/ASC-ECU 
connector A-04, intermediate connector A-16 and G 
and yaw late sensor connector C-117, inspect the 
wire. If any of these connector is damaged, repair or 
replace it. Then go to Step 8.

Q: Is the check result normal?

YES : 

This malfunctions is intermittent. Refer to 

GROUP 00, How to Use 
Troubleshooting/Inspection Service Points 

− 

How to Cope with Intermittent Malfunction 

P.00-5

.

NO : 

Repair it and go to Step 8.

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)

TROUBLESHOOTING

TRACTION CONTROL/ACTIVE STABILITY CONTROL SYSTEM

35C-103

STEP 7. 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 late sensor, and check 
whether diagnosis code C1366 or C1371 is reset.
(1) Replace the G and yaw late sensor.
(2) Connect MUT-III to the 16-pin diagnosis 

connector.

(3) Turn the ignition switch to the "ON" position.
(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.C1864 set? 

YES : 

Replace the hydraulic unit (integrated with 

TCL/ASC-ECU). Then go to Step 9.

NO : 

The procedure is complete.

STEP 8. 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.C1864 set?

YES : 

Replace the hydraulic unit (integrated with 

TCL/ASC-ECU). Then go to Step 9.

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

.

AC302297

AC310120

AB

MB991827

16-pin

MB991910

MB991824

AC302297

AC310120

AB

MB991827

16-pin

MB991910

MB991824

TROUBLESHOOTING

TRACTION CONTROL/ACTIVE STABILITY CONTROL SYSTEM

35C-104

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.C1864 set?

YES : 

Go to Step 1.

NO : 

The procedure is complete.

Code No.U1073: Bus off

CAUTION

• If diagnosis code U1073 is set in the 

TCL/ASC-ECU, always diagnose the CAN 
main bus line. If there is any fault in the CAN 
bus lines, an incorrect diagnosis code may be 
set.

• Whenever the ECU is replaced, ensure that 

the communication circuit is normal.

TROUBLE JUDGMENT

This code is stored when the TCL/ASC-ECU has 
ceased the CAN communication (bus off). Then, if a 
penalty mode is entered after approximately five 
minutes, regular data transmission will be cancelled.

PROBABLE CAUSES

• Damaged wiring harness or connector

• Malfunction of the hydraulic unit (integrated with 

TCL/ASC-ECU)

AC302297

AC310120

AB

MB991827

16-pin

MB991910

MB991824