Mitsubishi Montero Sport (2004+). Manual — part 538
HEADLIGHT
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CHASSIS ELECTRICAL
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INSPECTION PROCEDURE 2: Daytime Running Light Function does not Illuminate .<Vehicles for
CANADA>
FUSIBLE
LINK
JUNCTION
BLOCK
DRL-ECU
IGNITION
SWITCH (IG2)
COLUMN
SWITCH
DRL
LOWER
RELAY
DRL
UPPER
RELAY
HEADLIGHT
RELAY
(LO)
HEADLIGHT
(HI)
COLUMN
SWITCH
LIGHTING
SWITCH
11
JOINT
CONNECTOR (3)
DIMMER·
PASSING
SWITCH
Day Time Running Light Circuit
HEADLIGHT
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CHASSIS ELECTRICAL
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.
CIRCUIT OPERATION
If the ignition switch is turned to the "ON" position,
and battery positive voltage will be applied from the
daytime running light-ECU to the headlights.
Daytime running light-ECU terminal No.3 sends a
constant voltage to the headlights at a constant fre-
quency. This causes the headlights to dim more than
normal low-beam.
When the lighting switch is turned to the "HEAD"
position or the passing switch is turned on, daytime
running light-ECU terminal No.3 ceases the voltage
supply. This causes the headlights to illuminate at
normal low-beam.
.
TECHNICAL DESCRIPTION (COMMENT)
The cause may be a faulty daytime running light cir-
cuit or a faulty daytime running light-ECU.
.
TROUBLESHOOTING HINTS
• Malfunction of the daytime running light-ECU
• Malfunction of the daytime running light relay
• Damaged harness wires or connectors
.
AC002583AD
CONNECTOR: A-52X
A-52X
AC202180
CONNECTORS: A-96, A-97, A-98
AB
A-96
A-97
A-98
AC003830
CONNECTOR: C-70
AJ
C-70
AC003522
CONNECTOR: D-01
AC
JUNCTION BLOCK (FRONT)
D-01
AC003519
CONNECTOR: D-08
AE
JUNCTION BLOCK (REAR)
D-08
AC202556
CONNECTORS: D-22, D-24
AC
D-22
D-24
HEADLIGHT
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CHASSIS ELECTRICAL
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DIAGNOSIS
Required Special Tool:
• MB991223: Harness Set
STEP 1. Check the daytime running light-ECU power
supply (battery) circuit at daytime running light-ECU
connector A-96.
(1) Disconnect daytime running light-ECU connector A-96.
(2) Measure the voltage between terminal 1 and ground.
Q: Is the voltage 12 volts (battery positive voltage) between
terminal 1 and ground?
YES : Go to Step 3.
NO : Go to Step 2.
STEP 2. Check daytime running light-ECU connector A-96
for loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Are the connectors and terminals in good condition?
YES : Go to Step 3.
NO : Repair or replace the damaged components. Refer to
GROUP 00E, Harness Connector Inspection
AC202180
1
2
5 4
3
6
COMPONENT SIDE
CONNECTOR: A-96
AC
A-96
4
3 2 1
5
6
AC002360
A-96 HARNESS CONNECTOR:
COMPONENT SIDE
AC
AC202180
1
2
5 4
3
6
COMPONENT SIDE
CONNECTOR: A-96
AC
A-96
HEADLIGHT
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CHASSIS ELECTRICAL
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STEP 3. Check the harness wires between daytime running
light-ECU connector A-96 (terminal No.1) and fusible link
No. 11.
Q: Are the harness wires between daytime running
light-ECU connector A-96 (terminal No.1) and fusible
link No. 11 in good condition?
YES : Go to step 4.
NO : Repair or replace the damaged components. Refer to
GROUP 00E, Harness Connector Inspection
STEP 4. Check the daytime running light-ECU power
supply circuit (IG2) at the daytime running light-ECU
connector A-96.
(1) Disconnect the daytime running light-ECU connector A-96.
(2) Turn the ignition switch "ON" position.
(3) Measure the resistance between terminal 2 and ground.
Q: Is battery positive voltage (approximately 12 volts)
present?
YES : Go to Step 7.
NO : Go to Step 5.
AC202180
1
2
5 4
3
6
COMPONENT SIDE
CONNECTOR: A-96
AC
A-96
AC202180
1
2
5 4
3
6
COMPONENT SIDE
CONNECTOR: A-96
AC
A-96
4
3 2 1
5
6
AC309262 AB
A-96 HARNESS CONNECTOR:
COMPONENT SIDE
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