Mitsubishi Montero (2002-2004). Manual — part 332
SYMPTOM PROCEDURES
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SWS SYMPTOM PROCEDURES
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DOOR SW": Refer to Inspection Procedure O-5
"ETACS-ECU does not receive any signal from
the driver's or the front passenger's door switch
• Normal condition is not displayed on the "H/L
AUTO-CUT": Replace the front-ECU. Verify that
the headlight automatic shutdown function now
works normally.
INSPECTION PROCEDURE J-10: Headlight and Taillight: Headlight dimmer switch automatic resetting
function does not work normally.
.
CIRCUIT OPERATION
The headlight dimmer switch automatic resetting
function is controlled by the front-ECU.
.
TECHNICAL DESCRIPTION (COMMENT)
If the headlight dimmer switch automatic resetting
function does not work normally, the front-ECU may
be defective.
.
TROUBLESHOOTING HINT
The front-ECU may be defective
DIAGNOSIS
Replace the front-ECU.
Verify that the headlight dimmer switch automatic resetting
function now works normally.
Headlight (Dimmer/Passing) Input Signal
SYMPTOM PROCEDURES
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INSPECTION PROCEDURE J-11: Headlight and Taillight: Daytime running light function does not
work normally. <vehicles for Canada>
Daytime Running Light Circuit
AC204167
CONNECTORS : A-15, A-17
A-15
AO
A-17(GR)
AC204166
CONNECTORS : A-32, A-40
AK
A-40(B)
A-32(B)
SYMPTOM PROCEDURES
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SWS SYMPTOM PROCEDURES
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.
TECHNICAL DESCRIPTION (COMMENT)
If the daytime running light function is not operating
normally the daytime running light-ECU power circuit
may be defective or the daytime running light-ECU
may be defective.
.
TROUBLESHOOTING HINTS
• The daytime running light-ECU may be defective
• The wiring harness or connectors may have
loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector
DIAGNOSIS
Required Special Tools:
• MB991223: Harness Set
• MB991502: Scan Tool (MUT-II)
STEP 1. Verify the headlight (low-beam) operation.
Check to see that the headlight (low-beam) lights up properly
when operating the lighting switch while the headlight switch is
ON.
Q: Do the headlights (low-beam) illuminate normally?
YES : Go to Step 2.
NO : Refer to Inspection Procedure J-7 "One of the
headlights does not illuminate
AC204170
CONNECTOR : D-28
BB
AC204173
CONNECTORS: D-208, D-210
D-208
D-210
AR
SYMPTOM PROCEDURES
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SWS SYMPTOM PROCEDURES
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STEP 2. Check the battery power supply circuit to the
daytime running light-ECU. Test at daytime running light-
ECU connector A-40.
(1) Disconnect daytime running light-ECU connector A-40 and
measure the voltage available at the wiring harness side of
the connector.
(2) Measure the voltage between terminal 1 and ground.
• The voltage should measure approximately 12 volts
(battery positive voltage).
Q: Is the measured voltage approximately 12 volts (battery
positive voltage)?
YES : Go to Step 5.
NO : Go to Step 3.
STEP 3. Check daytime running light-ECU connector A-40
for loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is daytime running light-ECU connector A-40 in good
condition?
YES : Go to Step 4.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. The daytime running light function should
now work normally.
AC204166
CONNECTOR : A-40
HARNESS
SIDE
A-40(B)
A-40(B)
AH
1
4
2
3
6 5
5
6
3 2
4
1
AC204465
CONNECTOR: A-40
(HARNESS SIDE)
AB
AC204166
CONNECTOR : A-40
HARNESS
SIDE
A-40(B)
A-40(B)
AH
1
4
2
3
6 5
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