Mitsubishi Montero (2002-2004). Manual — part 338
SYMPTOM PROCEDURES
TSB Revision
SWS SYMPTOM PROCEDURES
54Bb-399
INSPECTION PROCEDURE K-2: Flasher Timer: Hazard warning lights do not illuminate.
.
CIRCUIT OPERATION
If the ETACS-ECU receives "ON" signal from the
hazard warning light switch, the ETACS-ECU turns
on the flasher timer (incorporated in the ETACS-
ECU), thus causing the turn-signal lights to flash.
.
TECHNICAL DESCRIPTION (COMMENT)
If the hazard warning lights do not flash, the power
supply line to the ETACS-ECU (dedicated to the turn-
signal lights) or the ETACS-ECU may be defective.
.
TROUBLESHOOTING HINTS
• The hazard warning light switch may be defective
• The ETACS-ECU may be defective
• The wiring harness or connectors may have
loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector
Hazard Warning Light Circuit
SYMPTOM PROCEDURES
TSB Revision
SWS SYMPTOM PROCEDURES
54Bb-400
DIAGNOSIS
Required Special Tools:
• MB991223: Harness Set
• MB991502: Scan Tool (MUT-II)
STEP 1. Verify the turn-signal light operation.
Q: Do the turn-signal lights illuminate normally?
YES : Go to Step 2.
NO : Refer to Inspection Procedure K-1 "Turn-signal lights
does not flash when the turn-signal light switch is
turned on
STEP 2. Check the input signal (by using the pulse check
mode of the monitor.)
Check input signal from the hazard warning light switch.
CAUTION
To prevent damage to scan tool MB991502, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991502.
(1) Connect scan tool MB991502 to the data link connector
(16-pin).
(2) Operate scan tool MB991502 according to the procedure
below to display "PULSE CHECK."
1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "PULSE CHECK."
(3) Verify that scan tool MB991502 sounds when the hazard
warning light switch is turned from "OFF" to "ON."
Q: Does scan tool MB991502 sound when the hazard
warning light switch is turned from "OFF" to "ON"?
YES : Replace the ETACS-ECU. Verify that the hazard
warning lights illuminate normally.
NO : Refer to Inspection Procedure P-2 "ETACS-ECU does
not receive any signal from the hazard warning light
switch
ACX01539
16-pin
MB991502
AI
SYMPTOM PROCEDURES
TSB Revision
SWS SYMPTOM PROCEDURES
54Bb-401
INSPECTION PROCEDURE K-3: Frasher timer: One of the turn-signal light do not illuminate.
Turn-signal Lights Circuit
SYMPTOM PROCEDURES
TSB Revision
SWS SYMPTOM PROCEDURES
54Bb-402
.
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
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