Mitsubishi Outlander GS45X. Manual - part 59

REAR COMBINATION LIGHT

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STEP 10. 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 11.
NO :  Repair the damaged parts.

STEP 11. Check the wiring harness between rear side 
marker light (RH) F-10 connector (terminal No. 2) and 
ETACS-ECU connector C-311 (terminal No. 13).
Check the communication line for open or short circuit.
NOTE: Before the wiring harness check, check the F-15, F-18 
and repair that if necessary.
Q: Is the wiring harness between rear side marker light 

(RH) F-10 connector (terminal No. 2) and ETACS-ECU 
connector C-311 (terminal No. 13) in good condition?
YES : Go to Step 12.
NO :  Repair the wiring harness.

STEP 12. Check rear combination light (RH) connector 
D-09 for loose, corroded or damaged terminals, or 
terminals pushed back in the connector.
Q: Is combination light (RH) connector D-09 in good 

condition?
YES : Go to Step 13.
NO  :  Repair the damaged parts.

STEP 13. Resistance measurement at rear combination 
light (RH) connector D-09.
(1) Disconnect the connector, and measure at the wiring 

harness side.

(2) Measure the resistance between rear combination light 

(RH) connector D-09 (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 15.
NO :  Go to Step 14.

AC702818

Connector D-09
(Harness side)

AP

REAR COMBINATION LIGHT

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STEP 14. Check the wiring harness between rear 
combination light (RH) connector D-09 (terminal No. 4) and 
ground.
Check the ground line for open circuit.
Q: Is the wiring harness between rear combination light 

(RH) connector D-09 (terminal No. 4) and ground in 
good condition?
YES : Go to Step 17.
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 rear 
combination light (RH) D-09 connector (terminal No. 2) and 
ETACS-ECU connector C-311 (terminal No. 13).
Check the communication line for open or short circuit.
Q: Is the wiring harness between rear combination light 

(RH) D-09 connector (terminal No. 2) and ETACS-ECU 
connector C-311 (terminal No. 13) in good condition?
YES : Go to Step 17.
NO :  Repair the wiring harness.

REAR COMBINATION LIGHT

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STEP 17. 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 18.
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 18. Substitute a known good rear combination light 
unit (RH), 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 (RH).

ZC501967

AC404789

AC702802

MB991824

MB991827

MB991910

Data link

connector

AB

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DTC B16A1: Taillight (LH) circuit open <Open circuit in the position light (LH) circuit, rear side marker 
light (LH) circuit, taillight (LH) and the license plate light circuit>

 

DTC B16A8: Taillight (LH) circuit short <Short circuit in the position light (LH) circuit, rear side marker 
light (LH) circuit, taillight (LH) circuit or the license plate light circuit>

Taillight (LH) Circuit

REAR
COMBINATION
LIGHT (TAIL: LH)

ETACS-
ECU

TAILLIGHT 
CONTROL CIRCUIT

HEADLIGHT 
ASSEMBLY 
(POSITION: LH)

REAR SIDE 
MARKER 
LIGHT (LH)

LICENCE 
PLATE 
LIGHT 

(LH)

(RH)