Mitsubishi Grandis. Manual — part 931

TROUBLESHOOTING

TRACTION CONTROL/ACTIVE STABILITY CONTROL SYSTEM

35C-49

STEP 3. Voltage measurement at TCL/ASC-ECU
connector A-04.

(1) Disconnect the connector A-04, and connect

special tool ABS Check Harness (MB991997) to
the wiring harness-side connector.
NOTE: Do not connect special tool ABS Check
Harness (MB991997) to the TCL/ASC-ECU.

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

(3) Measure the voltage between terminal 32 and

earth.

OK: System voltage

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

Go to Step 4.

STEP 4. Check TCL/ASC-ECU connector A-04 for
loose, corroded or damaged terminals, or
terminals pushed back in the connector.

Q: Is the check result normal?

YES :

An open or short circuit may be present in

the solenoid valve power supply circuit.
Repair the wiring harness between
TCL/ASC-ECU connector A-04 terminal 32
and fusible link No.3. Then go to Step 8.

NO :

Repair or replace the damaged
component(s). Then go to Step 8.

AC312620AL

Oil reservoir

Connector: A-04

TCL/ASC-ECU

MB991997

Check connector

A-04 Harness connector

A-04

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

AC312621

Oil reservoir

Connector: A-04

AB

A-04

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

A-04 Harness connector
(harness side)

TROUBLESHOOTING

TRACTION CONTROL/ACTIVE STABILITY CONTROL SYSTEM

35C-50

STEP 5. Measure the resistance at TCL/ASC-ECU
connector A-04.

(1) Disconnect the connector A-04, and connect

special tool ABS Check Harness (MB991997) to
the wiring harness-side connector.
NOTE: Do not connect special tool ABS Check
Harness (MB991997) to the TCL/ASC-ECU.

(2) Measure the resistance between terminal 16 and

earth.

OK: 2 ohm or less

Q: Is the result normal?

YES :

Go to Step 7.

NO :

Go to Step 6.

STEP 6. Check TCL/ASC-ECU connector A-04 for
loose, corroded or damaged terminals, or
terminals pushed back in the connector.

Q: Is the result normal?

YES :

An open circuit may be present in the earth

circuit. Repair the wiring harness between
TCL/ASC-ECU connector A-04 terminal 16
and the body earth. Then go to Step 8.

NO :

Repair or replace the damaged
component(s). Then go to Step 8.

AC312620AN

Oil reservoir

Connector: A-04

TCL/ASC-ECU

MB991997

Check connector

A-04 Harness connector

A-04

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

AC312621

Oil reservoir

Connector: A-04

AB

A-04

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

A-04 Harness connector
(harness side)

TROUBLESHOOTING

TRACTION CONTROL/ACTIVE STABILITY CONTROL SYSTEM

35C-51

STEP 7. 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.C1276 set?

YES :

Replace the hydraulic unit (integrated with

TCL/ASC-ECU). Then go to Step 8.

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 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.C1276 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-52

Code No.C1340: Stop lamp switch system

<LH drive vehicles>

26

FUSIBLE
LINK

RELAY
BOX

STOP LAMP
SWITCH

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

Stop Lamp Switch Circuit

AB