Mitsubishi Montero (2004+). Manual — part 781

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-381

INSPECTION PROCEDURE K-3: Frasher timer: One of the turn-signal light do not illuminate.

ETACS-
ECU

FRONT TURN
SIGNAL LIGHT

(LH)

(RH)

REAR COMBINATION
LIGHT

TURN-SIGNAL
LIGHT

(LH)

(RH)

JOINT
CONNECTOR (8)

JOINT
CONNECTOR (1)

COMBINATION
METER

JUNCTION
BLOCK

TURN-SIGNAL
LIGHT RELAY
: LH

TURN-SIGNAL
LIGHT RELAY
: RH

Turn-Signal Lights Circuit

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-382

.

TECHNICAL DESCRIPTION (COMMENT)
If the right or left turn-signal light does not illuminate,
their bulb may be defective.

.

TROUBLESHOOTING HINTS

• The turn-signal light bulb may be defective

• The wiring harness or connectors may have

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

.

AC204167

CONNECTORS : A-16, A-19

A-16

AR

A-19(B)

AC204166

CONNECTOR : A-35

AN

A-35(B)

AC204170

CONNECTORS : D-03,D-04,D-28,D-30,D-125

BM

D-03(GR)

D-04(GR)

D-125

D-28

D-30

AC204171

CONNECTOR : D-111

AG

AC204173

CONNECTORS : D-210, D-212, D-217

D-210

D-217

D-212

AV

AC204174

CONNECTOR : D-222

AE

AC204179

CONNECTOR : G-19

AM

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-383

DIAGNOSIS

Required Special Tool:

• MB991223: Test Harness Set

STEP 1. Verify the hazard warning light.
Q: Which turn-signal light does not illuminate?

Front turn-signal light (LH) : Go to Step 2.
Front turn-signal light (RH) : Go to Step 8.
Rear combination light (LH) : Go to Step 14.
Rear combination light (RH) : Go to Step 20.
Combination meter (LH) : Go to Step 26.
Combination meter (RH) : Go to Step 28.
Combination meter (both RH and LH) : Go to Step 30.
Front turn-signal light (LH) and combination meter (LH)
:

Go to Step 32.

LH side only : Refer to Inspection Procedure K-1

"Turn-signal lights does not flash when the turn-signal
light switch is turned on

P.54B-372

."

RH side only : Refer to Inspection Procedure K-1

"Turn-signal lights does not flash when the turn-signal
light switch is turned on

P.54B-372

."

Both LH and RH sides : Refer to Inspection Procedure K-2

"Hazard warning light does not illuminate

P.54B-379

."

STEP 2. Check the front turn-signal light bulb (LH).
(1) Remove the front turn-signal (LH) light bulb.
(2) Verify that the front turn-signal light bulb (LH) is not

damaged or burned out.

Q: Is the front turn-signal (LH) light bulb in good

condition?
YES : Go to Step 3.
NO : Replace the front turn-signal (LH) light bulb. Verify

that the turn-signal lights illuminate normally.

STEP 3. Check front turn-signal light (LH) connector A-19
for loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is the front turn-signal light (LH) connector A-19 in good

condition?
YES : Go to Step 4.
NO : Repair or replace the damaged component(s). Refer

to GROUP 00E, Harness Connector Inspection

P.00E-2

. Verify that the turn-signal lights illuminate

normally.

AC204167

CONNECTOR : A-19

HARNESS
SIDE

A-19(B)

A-19(B)

AH

1

2

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-384

STEP 4. Check the ground circuit to the front combination
light (LH). Test at front combination light (LH) connector
A-19.
(1) Disconnect front combination light (LH) connector A-19 and

measure the resistance available at the wiring harness side
of the connector.

(2) Measure the resistance value between terminal 2 and

ground.

• The resistance should equal 2 ohms or less.

Q: Is the measured resistance 2 ohms or less?

YES : Go to Step 6.
NO : Go to Step 5.

STEP 5. Check the wiring harness between front
turn-signal light (LH) connector A-19 (terminal 2) and
ground.
Q: Is the wiring harness between front turn-signal light

(LH) connector A-19 (terminal 2) and ground in good
condition?
YES : Replace the socket. Verify that the turn-signal lights

illuminate normally.

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. Verify that
the turn-signal lights illuminate normally.

AC204167

CONNECTOR : A-19

HARNESS
SIDE

A-19(B)

A-19(B)

AH

1

2

AC204786

1

2

AB

CONNECTOR A-19
(HARNESS SIDE)

AC204167

CONNECTOR : A-19

HARNESS
SIDE

A-19(B)

A-19(B)

AH

1

2