Mitsubishi Outlander GS45X. Manual - part 33

HEADLIGHT

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CHASSIS ELECTRICAL

54A-129

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TROUBLE JUDGMENT

When the left bulb of turn-signal light is blown, the 
ETACS-ECU sets DTC B16A2.

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TECHNICAL DESCRIPTION (COMMENT)

The ETACS-ECU sets DTC B16A2 under the follow-
ing conditions.

• If there is a malfunction to the left turn-signal light 

bulb, the blown left bulb counter counts once 
when the illumination of hazard or turn-signal 
light (left side) is attempted.

• After the bulb counter reaches "3," DTC B16A2 is 

set.

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TROUBLESHOOTING HINTS

• Malfunction of turn-signal light bulb (left)

• 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

ACA02655AV

Connectors: C-304, C-311, C-317

C-304

C-311

C-317

AC709496

AB

Connector: D-14

AC703415AE

Connector: E-29

HEADLIGHT

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CHASSIS ELECTRICAL

54A-130

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. Bulb check.
Check whether the left turn-signal light illuminates normally.
Q: Is the check result normal?

YES : Go to Step 2.
NO :  Replace the bulb of turn-signal light which does not 

illuminate.

STEP 2. Check headlight assembly (LH) connector A-37, 
side turn-signal light (LH) connector A-10 <fender type>, 
door mirror assembly (LH) connector E-29 <door mirror 
type>, rear combination light (LH) connector D-14 for 
loose, corroded or damaged terminals, or terminals 
pushed back in the connector.
Q: Are headlight assembly (LH) connector A-37, side 

turn-signal light (LH) connector A-10 <fender type>, 
door mirror assembly (LH) connector E-29 <door mirror 
type>, rear combination light (LH) connector D-14 in 
good condition?
YES : Go to Step 3.
NO  :  Repair the damaged parts.

HEADLIGHT

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CHASSIS ELECTRICAL

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STEP 3. Resistance measurement at headlight assembly 
(LH) connector A-37, side turn-signal light (LH) connector 
A-10 <fender type>, door mirror assembly (LH) connector 
E-29 <door mirror type>, rear combination light (LH) 
connector D-14.
(1) Disconnect the connector, and measure at the wiring 

harness side.

(2) Measure the resistance between the connector terminal of 

light which does not illuminate and ground.

•

Measure the resistance between the headlight assem-
bly (LH) connector A-37 (terminal No. 6) and body 
ground.

•

Measure the resistance between side turn-signal light 
(LH) connector A-10 (terminal No. 1) and body ground. 
<fender type>

•

Measure the resistance between door mirror assembly 
(LH) connector E-29 (terminal No. 10) and body ground. 
<door mirror type>

•

Measure the resistance between rear combination light 
(LH) connector D-14 (terminal No. 4) and body ground.

The measured value should be 2 

Ω or less.

Q: Does the measured resistance value correspond with 

this range?
YES : Go to Step 5.
NO :  Go to Step 4.

AC702818

Connector A-37
(Harness side)

AE

AC702818

Connector A-10
(Harness side)

AF

AC702818

Connector E-29
(Harness side)

DT

AC702818

Connector D-14
(Harness side)

AG

HEADLIGHT

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STEP 4. Check the wiring harness between headlight 
assembly (LH) connector A-37 (terminal No. 6), side 
turn-signal light (LH) connector A-10 (terminal No. 1) 
<fender type>, door mirror assembly (LH) connector E-29 
(terminal No. 10) <door mirror type>, rear combination 
light (LH) connector D-14 (terminal No. 4) and ground.
Check the ground wires for open circuit.
NOTE: Also check intermediate connector C-126 <door mirror 
type> for loose, corroded, or damaged terminals, or terminals 
pushed back in the connector. If intermediate connector C-126 
<door mirror type> is damaged, repair or replace the connector 
as described in GROUP 00E, Harness Connector Inspection 

P.00E-2

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Q: Are the wiring harness between headlight assembly 

(LH) connector A-37 (terminal No. 6), side turn-signal 
light (LH) connector A-10 (terminal No. 1) <fender type>, 
door mirror assembly (LH) connector E-29 (terminal No. 
10) <door mirror type>, rear combination light (LH) 
connector D-14 (terminal No. 4) and ground in good 
condition?
YES : Go to Step 7.
NO :  Repair the wiring harness.

STEP 5. Check ETACS-ECU connectors C-304, C-311 and 
C-317 <door mirror type> for loose, corroded or damaged 
terminals, or terminals pushed back in the connector.
Q: Are ETACS-ECU connectors C-304, C-311 and C-317 in 

good condition?
YES : Go to Step 6.
NO :  Repair the damaged parts.