Mitsubishi Lancer Evolution IX. Manual - part 612

TROUBLESHOOTING <ACD>

MANUAL TRANSMISSION (FF)

22A-131

STEP 10. Connectors check: C-25, C-26 
4WD-ECU connector.

Check for the contact with terminals.

Q: Is the check result normal?

YES : 

Repair the 4WD-ECU.

NO : 

Repair the defective connector.

AC311002

4WD-ECU

Harness side

C-26 (Y)

AD

Connector: C-25, C-26

4WD-ECU

C-26 (Y)

Rear console 
assembly

<LH drive vehicles>

<RH drive vehicles>

Harness side

C-25 (Y)

C-25 (Y)

C-25

C-26

TROUBLESHOOTING <ACD>

MANUAL TRANSMISSION (FF)

22A-132

INSPECTION PROCEDURE 3: ACD mode indicator lamp does not light up when the ignition switch is 
set to "ON" (engine is stopped)

IGNITION
SWITCH (IG1)

DRIVE CIRCUIT

4WD-ECU

COMBINATION
METER

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

ACD mode indicator lamp system circuit <LH drive vehicles>

TROUBLESHOOTING <ACD>

MANUAL TRANSMISSION (FF)

22A-133

OPERATION

The 4WD-ECU displays a control mode (tarmac, 
gravel, snow) on the ACD mode indicator lamp on 
the combination meter.

COMMENTS ON TROUBLE SYMPTOM

The ACD mode indicator lamp circuit or 4WD-ECU 
may be faulty.

PROBABLE CAUSES

• Damaged harness wires and connectors

• Malfunction of the ACD mode indicator lamp 

assembly

• Malfunction of the 4WD-ECU

IGNITION
SWITCH (IG1)

DRIVE CIRCUIT

4WD-ECU

COMBINATION
METER

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

ACD mode indicator lamp system circuit <RH drive vehicles>

TROUBLESHOOTING <ACD>

MANUAL TRANSMISSION (FF)

22A-134

DIAGNOSIS

STEP 1. Measure the voltage at combination 
meter connector C-01.

(1) Disconnect the combination meter connector, 

and measure the voltage between terminal No.9 
and earth.

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

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Go to Step 2.

STEP 2. Connectors check: C-01 combination 
meter connector, C-23 J/C (4), C-211, C-214 J/B 
connector <LH drive vehicles> or C-01 
combination meter connector, C-211, C-214 J/B 
connector <RH drive vehicles>.

AC311015AO

Connector: C-01 <LH drive vehicles>

C-01

C-01

AC311037

C-01

AG

Connector: C-01 <RH drive vehicles>

C-01

AC311015AO

Connector: C-01 <LH drive vehicles>

C-01

C-01

AC311037

C-01

AG

Connector: C-01 <RH drive vehicles>

C-01

AC311015AK

Connector: C-23 <LH drive vehicles>

C-23 (B)

AC310448

AW

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

Junction block (front view)

C-214

C-211

C-211

C-214