Mitsubishi Lancer Evolution IX. Manual - part 613

TROUBLESHOOTING <ACD>

MANUAL TRANSMISSION (FF)

22A-135

Check for the contact with terminals.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Repair the defective connector.

STEP 3. Check the harness between combination 
meter connector C-01 terminal No.9 and ignition 
switch.

Check the power supply line for short or open circuit.

Q: Is the check result normal?

YES : 

Intermittent malfunction (Refer to GROUP 

00 

− How to Cope with Intermittent 

Malfunction 

P.00-5

).

NO : 

Repair the wiring harness.

STEP 4. Check the ACD mode indicator lamp 
illumination.

(1) Disconnect the 4WD-ECU connector C-26, and 

check the harness side.

(2) Turn the ignition switch to the ON position.
(3) Connect terminal No.40,51,52 to body earth.

OK: The indicator lamp illuminates.

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Go to Step 5.

AC310458

AS

Connector: C-211, 
C-214 <RH drive vehicles>

C-214

C-211

C-214

Junction block (front view)

C-211

AC311015AO

Connector: C-01 <LH drive vehicles>

C-01

C-01

AC311037

C-01

AG

Connector: C-01 <RH drive vehicles>

C-01

AC311002

4WD-ECU

Harness side

C-26 (Y)

AC

Connector: C-26

4WD-ECU

C-26 (Y)

Rear console 
assembly

<LH drive vehicles>

<RH drive vehicles>

TROUBLESHOOTING <ACD>

MANUAL TRANSMISSION (FF)

22A-136

STEP 5. Connectors check: C-01 combination 
meter connector, C-26 4WD-ECU connector, 
C-122 intermediate connector <LH drive 
vehicles> or C-01 combination meter connector, 
C-26 4WD-ECU connector, C-138 intermediate 
connector <RH drive vehicles>.

Check for the contact with terminals.

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Repair the defective connector.

AC311015AO

Connector: C-01 <LH drive vehicles>

C-01

C-01

AC311037

C-01

AG

Connector: C-01 <RH drive vehicles>

C-01

AC311002

4WD-ECU

Harness side

C-26 (Y)

AC

Connector: C-26

4WD-ECU

C-26 (Y)

Rear console 
assembly

<LH drive vehicles>

<RH drive vehicles>

AC311015AC

Connector: C-122 <LH drive vehicles>

C-122

AC311016AB

Connector: C-138 <RH drive vehicles>

C-138

TROUBLESHOOTING <ACD>

MANUAL TRANSMISSION (FF)

22A-137

STEP 6. Check the harness between combination 
meter connector C-01 (terminal No.10, 14, 15) and 
4WD-ECU connector C-26 (terminal No.40, 52, 
51).

Check the output line for short or open circuit.

Q: Is the check result normal?

YES : 

Replace the ACD mode indicator lamp 

assembly.

NO : 

Repair the wiring harness.

STEP 7. Connector check: C-26 4WD-ECU 
connector.

Check for the contact with terminals.

Q: Is the check result normal?

YES : 

Replace the 4WD-ECU.

NO : 

Repair the defective connector.

AC311015AO

Connector: C-01 <LH drive vehicles>

C-01

C-01

AC311037

C-01

AG

Connector: C-01 <RH drive vehicles>

C-01

AC311002

4WD-ECU

Harness side

C-26 (Y)

AC

Connector: C-26

4WD-ECU

C-26 (Y)

Rear console 
assembly

<LH drive vehicles>

<RH drive vehicles>

AC311002

4WD-ECU

Harness side

C-26 (Y)

AC

Connector: C-26

4WD-ECU

C-26 (Y)

Rear console 
assembly

<LH drive vehicles>

<RH drive vehicles>

TROUBLESHOOTING <ACD>

MANUAL TRANSMISSION (FF)

22A-138

INSPECTION PROCEDURE 4: More than two ACD mode indicator lamps remain lit even after the 
engine is started

ACD MODE INDICATOR LAMP SYSTEM 
CIRCUIT

Refer to 

P.22A-132

.

OPERATION

Refer to 

P.22A-132

.

COMMENTS ON TROUBLE SYMPTOM

The output circuit of the ACD mode indicator lamp 
may be faulty.

PROBABLE CAUSES

• Damaged harness wires and connectors

• Malfunction of the ACD mode indicator lamp 

assembly

• Malfunction of the 4WD-ECU

DIAGNOSIS

STEP 1. Check the ACD mode indicator lamp 
illumination.

(1) Disconnect the 4WD-ECU connector C-26.
(2) Turn the ignition switch to the ON position.
(3) Check that the ACD mode indicator lamp does 

not illuminate.

OK: The indicator lamp does not illumi-
nate.

Q: Is the check result normal?

YES : 

Replace the 4WD-ECU.

NO : 

Go to Step 2.

AC311002

4WD-ECU

Harness side

C-26 (Y)

AC

Connector: C-26

4WD-ECU

C-26 (Y)

Rear console 
assembly

<LH drive vehicles>

<RH drive vehicles>