Mitsubishi Lancer Evolution IX. Manual - part 602

TROUBLESHOOTING <ACD>

MANUAL TRANSMISSION (FF)

22A-91

Check for the contact with terminals.

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Repair the defective connector.

STEP 5. Check the harness between ACD mode 
changeover switch connector C-135 terminal 
No.2 and ignition switch.

Check the power supply line for short or open circuit.

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Repair the wiring harness.

STEP 6. M.U.T.-II/III data list
Item 63: ACD mode changeover switch (Refer to 
data list reference table 

P.22A-142

).

Q: Is the check result normal?

YES : 

Intermittent malfunction (Refer to GROUP 

00 

− How to Cope with Intermittent 

Malfunction 

P.00-5

).

NO : 

Replace the 4WD-ECU.

STEP 7. Measure the voltage at 4WD-ECU 
connector C-26.
(1) Turn the ignition switch to the ON position.

(2) Measure the voltage between 4WD-ECU 

connector C-26 terminal No.47 and earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 10.

NO : 

Go to Step 8.

AC310458

AT

Connector: C-210, 
C-211 <RH drive vehicles>

Junction block (front view)

C-210

C-210

C-211

C-211

AC311015AI

Connector: C-135 <LH drive vehicles>

C-135

AC311037

C-135

AD

Connector: C-135 <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-92

STEP 8. Connectors check: C-26 4WD-ECU 
connector, C-122 intermediate connector, C-135 
ACD mode changeover switch connector <LH 
drive vehicles> or C-26 4WD-ECU connector, 
C-138 intermediate connector, C-135 ACD mode 
changeover switch connector <RH drive 
vehicles>.

Check for the contact with terminals.

Q: Is the check result normal?

YES : 

Go to Step 9.

NO : 

Repair the defective connector.

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

AC311015AI

Connector: C-135 <LH drive vehicles>

C-135

AC311037

C-135

AD

Connector: C-135 <RH drive vehicles>

TROUBLESHOOTING <ACD>

MANUAL TRANSMISSION (FF)

22A-93

STEP 9. Check the harness between 4WD-ECU 
connector C-26 terminal No.47 and ACD mode 
changeover switch connector C-135 terminal 
No.1.

Check the output line for short or open circuit.

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Repair the wiring harness.

STEP 10. Connector check: C-26 4WD-ECU 
connector.

Check for the contact with terminals.

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Repair the defective connector.

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>

AC311015AI

Connector: C-135 <LH drive vehicles>

C-135

AC311037

C-135

AD

Connector: C-135 <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-94

Code No.63 Parking brake switch system

Parking brake switch system circuit <LH drive vehicles>

4WD-ECU

PARKING BRAKE SWITCH

ABS-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

Parking brake switch system circuit <RH drive vehicles>

4WD-ECU

PARKING BRAKE SWITCH

ABS-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