Mitsubishi Outlander GS45X. Manual - part 61

REAR COMBINATION LIGHT

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STEP 14. Check the wiring harness between license plate 
light connector F-03 (LH) or F-07 (RH) (terminal No. 1) and 
ground.
Check the ground line for open circuit.
Q: Is the wiring harness between license plate light 

connector F-03 (LH) or F-07 (terminal No. 1) and ground 
in good condition?
YES : Go to Step 22.
NO :  Repair the wiring harness.

STEP 15. Check ETACS-ECU connectors C-311 for loose, 
corroded or damaged terminals, or terminals pushed back 
in the connector.
Q: Is ETACS-ECU connectors C-311 in good condition?

YES : Go to Step 16.
NO :  Repair the damaged parts.

STEP 16. Check the wiring harness between license plate 
light connector F-03 (LH), F-07 (RH) (terminal No. 2) and 
ETACS-ECU connector C-311 (terminal No. 10).
Check the communication line for open or short circuit.
NOTE: Before the wiring harness check, check the D-12 and 
repair that if necessary.
Q: Is the wiring harness between license plate light 

connector F-03 (LH), F-07 (RH) (terminal No. 2) and 
ETACS-ECU connector C-311 (terminal No. 10) in good 
condition?
YES : Go to Step 17.
NO :  Repair the wiring harness.

STEP 17. Check rear combination light (LH) connector 
D-14 for loose, corroded or damaged terminals, or 
terminals pushed back in the connector.
Q: Is combination light (LH) connector D-14 in good 

condition?
YES : Go to Step 18.
NO  :  Repair the damaged parts.

REAR COMBINATION LIGHT

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STEP 18. Resistance measurement at rear combination 
light (LH) connector D-14.
(1) Disconnect the connector, and measure at the wiring 

harness side.

(2) Measure the resistance between rear combination light (LH) 

connector D-14 (terminal No. 4) and the body ground.

The measured value should be continuity exists (2 
Ω or less).

Q: Does the measured resistance value correspond with 

this range?
YES : Go to Step 20.
NO :  Go to Step 19.

STEP 19. Check the wiring harness between rear 
combination light (LH) connector D-14 (terminal No. 4) and 
ground.
Check the ground line for open circuit.
Q: Is the wiring harness between rear combination light 

(LH) connector D-14 (terminal No. 4) and ground in good 
condition?
YES : Go to Step 22.
NO :  Repair the wiring harness.

STEP 20. Check ETACS-ECU connectors C-311 for loose, 
corroded or damaged terminals, or terminals pushed back 
in the connector.
Q: Is ETACS-ECU connectors C-311 in good condition?

YES : Go to Step 21.
NO :  Repair the damaged parts.

STEP 21. Check the wiring harness between rear 
combination light (LH) D-14 connector (terminal No. 2) and 
ETACS-ECU connector C-311 (terminal No. 10).
Check the communication line for open or short circuit.
Q: Is the wiring harness between rear combination light 

(LH) D-14 connector (terminal No. 2) and ETACS-ECU 
connector C-311 (terminal No. 10) in good condition?
YES : Go to Step 22.
NO :  Repair the wiring harness.

AC702818

Connector D-14
(Harness side)

AQ

REAR COMBINATION LIGHT

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STEP 22. Using scan tool MB991958, Check whether the 
diagnostic trouble code is reset.

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958. Refer to "How to connect 

scan tool 

P.54A-227

."

(2) Turn the ignition switch to the "ON" position.
(3) Erase the DTC.
(4) Turn the ignition switch from "LOCK" (OFF) position to "ON" 

position.

(5) Check if DTC is set.
Q: Is the DTC set?

YES : Go to Step 23.
NO :  The trouble can be an intermittent malfunction (Refer 

to GROUP 00 

− How to use 

Troubleshooting/inspection Service Points 

− How to 

Cope with Intermittent Malfunction 

P.00-15

).

STEP 23. Substitute a known good rear combination light 
unit (LH), and Using scan tool MB991958, Check whether 
the diagnostic trouble code is reset.
(1) Turn the ignition switch to the "ON" position.
(2) Erase the DTC.
(3) Turn the ignition switch from "LOCK" (OFF) position to "ON" 

position.

(4) Check if DTC is set.
Q: Is the DTC set?

YES : Replace the ETACS-ECU.
NO :  Replace the rear combination light unit (LH).

TROUBLE SYMPTOM CHART

M1541401000362

ZC501967

AC404789

AC702802

MB991824

MB991827

MB991910

Data link

connector

AB

Trouble symptom

Inspection 
Procedure No.

Reference page

None of taillights illuminates.

1

P.54A-244

One of the taillights does not illuminate.

2

P.54A-246

Stoplight does not illuminate or go out normally.

3

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REAR COMBINATION LIGHT

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SYMPTOM PROCEDURES

Inspection Procedure 1: None of taillights illuminates.

CAUTION

Before replacing the ECU, ensure that the power 
supply circuit, the ground circuit and the com-
munication circuit are normal.

.

TECHNICAL DESCRIPTION (COMMENT)

If none of taillights illuminates, the taillight switch 
input circuit or ETACS-ECU may have a problem. 

.

TROUBLESHOOTING HINTS

• Malfunction of column switch

• Malfunction of the ETACS-ECU

• The wiring harness or connectors may have 

loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector

DIAGNOSIS

Required Special Tools:

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A (Vehicles with 

CAN communication system)

STEP 1. License plate light operation check
Check that the license plate light illuminates normally.
Q: Does license plate light work normally?

YES : Go to Step 2.
NO :  Replace the ETACS-ECU.