Mitsubishi Evolution X. Manual — part 963

REAR COMBINATION LIGHT

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CHASSIS ELECTRICAL

54A-213

TECHNICAL DESCRIPTION (COMMENT)

If any of the taillights does not Illuminate, the wiring
harness, connector(s), or rear combination light unit
may have a problem, or the fuse may be burned out.

.

TROUBLESHOOTING HINTS

• Malfunction of rear combination light unit

• The wiring harness or connectors may have

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

DIAGNOSIS

Required Special Tools:

• MB992006: Extra fine probe

• MB991223: Harness set

• 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. Check rear combination light connector F-25 (LH)
or F-06 (RH) for loose, corroded or damaged terminals, or
terminals pushed back in the connector.
Q: Is rear combination light connector F-25 (RH) or F-06

(LH) in good condition?
YES : Go to Step 2.
NO : Repair or replace the damaged component(s). Refer

to GROUP 00E, Harness Connector Inspection

P.00E-2

.

STEP 2. Resistance measurement at rear combination light
connector F-25 (LH) or F-06 (RH).
(1) Disconnect the connector, and measure at the wiring

harness side.

(2) Measure the resistance between the connector of light

which does not illuminate and body ground.

•

Measure the resistance between rear combination light
(LH) connector F-25 (terminal 1) and body ground.

AC608255 AT

Harness side: F-20

REAR COMBINATION LIGHT

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•

Measure the resistance between rear combination light
(RH) connector F-06 ( terminal 1) and body ground.

OK: The measured value should be continuity
exists (2 ohms or less).

Q: Does the measured resistance value correspond with

this range?
YES : Go to Step 4.
NO : Go to Step 3.

STEP 3. Check the wiring harness between rear
combination light connectors F-25 (LH) (terminal 1) or F-06
(RH) (terminal 1) and ground.
Q: Is the wiring harness between rear combination light

connectors F-25 (LH) (terminal 1) or F-06 (RH) (terminal
1) and ground in good condition?
YES : Go to Step 6.
NO : The wiring harness may be damaged or the

connector(s) may have loose, corroded or damaged
terminals, or terminals pushed back in the connector.
Repair the wiring harness as necessary.

STEP 4. 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 5.
NO : Repair or replace the damaged component(s). Refer

to GROUP 00E, Harness Connector Inspection

P.00E-2

.

AC608255 AW

Harness side: F-06

REAR COMBINATION LIGHT

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CHASSIS ELECTRICAL

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STEP 5. Check the wiring harness between rear
combination light connector and ETACS-ECU connector.
Check the power supply line for open circuit.

• Check the wiring harness between rear combination light

(LH) connector F-25 (terminal 3) and ETACS-ECU connec-
tor C-311 (terminal 10). <LH>

• Check the wiring harness between rear combination light

(RH) connector F-06 (terminal 3) and ETACS-ECU connec-
tor C-311 (terminal 13). <RH>
NOTE: Also check joint connector C-43 and intermediate
connector D-11 for loose, corroded, or damaged terminals,
or terminals pushed back in the connector. If joint connector
C-43 or intermediate connector D-11 is damaged, repair or
replace the connector as described in GROUP 00E, Har-
ness Connector Inspection

P.00E-2

.

Q: Is the wiring harness between rear combination light

connector and ETACS-ECU connector in good
condition?
YES : Go to Step 6.
NO : The wiring harness may be damaged or the

connector(s) may have loose, corroded or damaged
terminals, or terminals pushed back in the connector.
Repair the wiring harness as necessary.

STEP 6. Retest the system.
Check that the taillight illuminates normally.
Q: Does the taillight work normally?

YES : 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

).

NO : Replace the defective rear combination light unit.

REAR COMBINATION LIGHT

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REAR COMBINATION LIGHT REMOVAL AND INSTALLATION

M1541402200295

AC709273AB

2

4

5

6

7

1.2 ± 0.7 N·m
11 ± 6 in-lb

Grommet

Section A - A

Grommet

Section B - B

3

1

A

A

B

B

2

2

Removal Steps

1.

Rear combination light assembly

2.

Rear combination light unit

3.

Stop/taillight bulb

4.

Rear turn-signal light bulb

5.

Rear side-marker light bulb

6.

Socket

7.

Grommet

Removal Steps (Continued)