Mitsubishi Lancer Evolution IX. Manual - part 599

TROUBLESHOOTING <ACD>

MANUAL TRANSMISSION (FF)

22A-79

STEP 4. Connector check: C-25 4WD-ECU 
connector.

Check for the contact with terminals.

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Repair the defective connector.

STEP 5. M.U.T.-II/III data list
Item 15: Lateral G-sensor voltage (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.

AC311002

4WD-ECU

Harness side

C-25 (Y)

AB

Connector: C-25

4WD-ECU

C-25 (Y)

Rear console 
assembly

<LH drive vehicles>

<RH drive vehicles>

TROUBLESHOOTING <ACD>

MANUAL TRANSMISSION (FF)

22A-80

STEP 6. Connectors check: B-118 ABS-ECU 
connector, C-25 4WD-ECU connector, C-122 
intermediate connector, D-37 lateral G-sensor 
connector.

Check for the contact with terminals.

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Repair the defective connector.

AC311020

Harness side

B-118 
(B)

AB

Connector: B-118

<LH drive vehicles>

<RH drive vehicles>

B-118 
(GR)

B-118

AC311002

4WD-ECU

Harness side

C-25 (Y)

AB

Connector: C-25

4WD-ECU

C-25 (Y)

Rear console 
assembly

<LH drive vehicles>

<RH drive vehicles>

AC311015AC

Connector: C-122 <LH drive vehicles>

C-122

AC311016AE

Connector: C-122 <RH drive vehicles>

C-122 (L)

AC311048

<LH drive vehicles>

Sensor side

D-37 (B)

AC

Connector: D-37

<RH drive vehicles>

D-37 (B)

TROUBLESHOOTING <ACD>

MANUAL TRANSMISSION (FF)

22A-81

STEP 7. Check the harness between 4WD-ECU 
connector C-25 terminal No.11 and lateral 
G-sensor connector D-37 terminal No.2.

Check the output line for short or open circuit.

Q: Is the check result normal?

YES : 

Go to Step 8.

NO : 

Repair the wiring harness.

AC311002

4WD-ECU

Harness side

C-25 (Y)

AB

Connector: C-25

4WD-ECU

C-25 (Y)

Rear console 
assembly

<LH drive vehicles>

<RH drive vehicles>

AC311048

<LH drive vehicles>

Sensor side

D-37 (B)

AC

Connector: D-37

<RH drive vehicles>

D-37 (B)

TROUBLESHOOTING <ACD>

MANUAL TRANSMISSION (FF)

22A-82

STEP 8. Check the harness between ABS-ECU 
connector B-118 terminal No.14 and lateral 
G-sensor connector D-37 terminal No.2.

Check the output line for short circuit.

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Repair the wiring harness.

AC311020

Harness side

B-118 
(B)

AB

Connector: B-118

<LH drive vehicles>

<RH drive vehicles>

B-118 
(GR)

B-118

AC311048

<LH drive vehicles>

Sensor side

D-37 (B)

AC

Connector: D-37

<RH drive vehicles>

D-37 (B)