Mitsubishi Lancer Evolution IX. Manual - part 597

TROUBLESHOOTING <ACD>

MANUAL TRANSMISSION (FF)

22A-71

STEP 4. Check the harness between J/B 
connector C-214 terminal No.26 and lateral 
G-sensor connector D-37 terminal No.1.

Check the power supply line for short or open circuit.

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Repair the wiring harness.

STEP 5. Replace the lateral G-sensor and then 
recheck the diagnosis code.
(1) Replace the lateral G-sensor.
(2) Test drive the vehicle.
(3) Check the diagnosis code.

Q: Is the diagnosis code set?

YES : 

Go to Step 6.

NO : 

The inspection is complete.

STEP 6. 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.

STEP 7. Measure the resistance at lateral 
G-sensor connector D-37.

Disconnect the lateral G-sensor connector, and 
measure the resistance between terminal No.3 and 
earth.

OK: 2 

Ω or less

Q: Is the check result normal?

YES : 

Go to Step 12.

NO : 

Go to Step 8.

AC310448

AU

Connector: C-214 <LH drive vehicles>

Junction block (front view)

Junction block side

C-214

AC310458

AO

Connector: C-214 
<RH drive vehicles>

Junction block (front view)

Junction 
block side

C-214

AC311048

<LH drive vehicles>

Sensor side

D-37 (B)

AC

Connector: D-37

<RH drive vehicles>

D-37 (B)

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-72

STEP 8. Connector check: B-118 ABS-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 9.

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

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-73

STEP 9. Check the harness between ABS-ECU 
connector B-118 terminal No.24 and lateral 
G-sensor connector D-37 terminal No.3.

Check the earth line for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 10.

NO : 

Repair the wiring harness.

STEP 10. Replace the lateral G-sensor and then 
recheck the diagnosis code.
(1) Replace the lateral G-sensor.
(2) Test drive the vehicle.
(3) Check the diagnosis code.

Q: Is the diagnosis code set?

YES : 

Go to Step 11.

NO : 

The inspection is complete.

STEP 11. 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 : 

Refer to GROUP 35B 

− Inspection Chart for 

Diagnosis Code 

P.35B-9

.

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)

TROUBLESHOOTING <ACD>

MANUAL TRANSMISSION (FF)

22A-74

STEP 12. Measure the voltage at lateral G-sensor 
connector D-37.

(1) Disconnect the lateral G-sensor connector, and 

connect special tool harness set (MB991348) 
between the disconnected connectors.

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

(3) Measure the voltage between terminal No.2 and 

earth.

OK:

When vehicle is stationary (level): 2.4 

− 2.6 

V

When vehicle is being driven: 3.3 

− 3.7 V

Q: Is the check result normal?

YES : 

Go to Step 13.

NO : 

Replace the G-sensor.

AC103662AM

MB991348

Connector: D-37
(Harness side)

Label

Label