Nissan Titan A60. Instruction — part 497
HEADLAMP (LO) CIRCUIT
EXL-43
< DTC/CIRCUIT DIAGNOSIS >
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1. Turn the ignition switch OFF.
2. Disconnect the front combination lamp connector.
3. Turn the ignition switch ON.
4. Turn the low beam headlamps ON.
5. With the low beam headlamps ON, check the voltage between
the combination lamp connector and ground.
Is voltage reading as specified?
YES
>> GO TO 4.
NO
>> GO TO 3.
3.
CHECK HEADLAMP (LO) CIRCUIT FOR OPEN
1. Turn the ignition switch OFF.
2. Disconnect IPDM E/R connector E123.
3. Check continuity between the IPDM E/R harness connector (A)
and the front combination lamp harness connector (B).
Does continuity exist?
YES
>> Replace IPDM E/R. Refer to
PCS-28, "Removal and Installation of IPDM E/R"
.
NO
>> Repair the harnesses or connectors.
4.
CHECK FRONT COMBINATION LAMP (LO) GROUND CIRCUIT
Check continuity between the front combination lamp harness con-
nector terminal and ground.
Does continuity exist?
YES
>> Inspect the headlamp bulb.
NO
>> Repair the harness.
Diagnosis Procedure - With Daytime Light System
INFOID:0000000006179029
Regarding Wiring Diagram information, refer to
.
1.
CHECK HEADLAMP (LO) FUSES
1. Turn the ignition switch OFF.
2. Check that the following fuses are not open.
(+)
(
−)
Voltage
Connector
Terminal
LH
E11
1
Ground
Battery voltage
RH
E107
1
ALLIA0389GB
A
B
Continuity
Connector
Terminal
Connector
Terminal
LH
E123
52
E11
1
Yes
RH
54
E107
1
ALLIA0390GB
Connector
Terminal
—
Continuity
LH
E11
4
Ground
Yes
RH
E107
4
ALLIA0391GB
EXL-44
< DTC/CIRCUIT DIAGNOSIS >
HEADLAMP (LO) CIRCUIT
Is the fuse open?
YES
>> Repair the harness and replace the fuse.
NO
>> GO TO 2.
2.
CHECK HEADLAMP (LO) OUTPUT VOLTAGE
1. Turn the ignition switch OFF.
2. Disconnect the front combination lamp connector.
3. Turn the ignition switch ON.
4. Turn the low beam headlamps ON.
5. With the low beam headlamps ON, check the voltage between
the combination lamp connector and ground.
Is voltage reading as specified?
YES
>> GO TO 4.
NO
>> GO TO 3.
3.
CHECK HEADLAMP (LO) CIRCUIT FOR OPEN
1. Turn the ignition switch OFF.
2. Disconnect IPDM E/R connector E123.
3. Check continuity between the IPDM E/R harness connector (A)
and the front combination lamp harness connector (B).
Does continuity exist?
YES
>> Replace IPDM E/R. Refer to
PCS-28, "Removal and Installation of IPDM E/R"
.
NO
>> Repair the harnesses or connectors.
4.
CHECK FRONT COMBINATION LAMP (LO) GROUND CIRCUIT
Check continuity between the front combination lamp harness con-
nector terminal and ground.
Does continuity exist?
YES
>> Inspect the headlamp bulb.
NO
>> Repair the harness.
Unit
Location
Fuse No.
Capacity
Headlamp LO (LH)
IPDM E/R
40
15A
Headlamp LO (RH)
IPDM E/R
41
15A
(+)
(
−)
Voltage
Connector
Terminal
LH
E6
1
Ground
Battery voltage
RH
E108
1
ALLIA0389GB
A
B
Continuity
Connector
Terminal
Connector
Terminal
LH
E123
52
E6
1
Yes
RH
54
E108
1
ALLIA0390GB
Connector
Terminal
—
Continuity
LH
E6
4
Ground
Yes
RH
E108
4
ALLIA0391GB
FRONT FOG LAMP CIRCUIT
EXL-45
< DTC/CIRCUIT DIAGNOSIS >
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FRONT FOG LAMP CIRCUIT
Description
INFOID:0000000006179030
The IPDM E/R (intelligent power distribution module engine room) controls the front fog lamp relay based on
inputs from the BCM via the CAN communication lines. When the front fog lamp relay is energized, power
flows from the front fog lamp relay in the IPDM E/R to the front fog lamps.
Component Function Check
INFOID:0000000006179031
1.
CHECK FRONT FOG LAMP OPERATION
WITHOUT CONSULT-III
1. Activate IPDM E/R auto active test. Refer to
PCS-11, "Diagnosis Description"
.
2. Check that the front fog lamp is turned ON.
CONSULT-III
1. Select "EXTERNAL LAMPS" of IPDM E/R active test item.
2. With operating the test items, Check that the front fog lamp is turned ON.
Is the front fog lamp turned ON?
YES
>> Front fog lamp circuit is normal.
NO
>> Refer to
.
Diagnosis Procedure
INFOID:0000000006179032
Regarding Wiring Diagram information, refer to
.
1.
CHECK FRONT FOG LAMP FUSE
1. Turn the ignition switch OFF.
2. Check that the following fuses are not open.
Is the fuse open?
YES
>> Repair the harness and replace the fuse.
NO
>> GO TO 2.
2.
CHECK FRONT FOG LAMP OUTPUT VOLTAGE
1. Turn the ignition switch OFF.
2. Disconnect the front fog lamp connector.
3. Turn the ignition switch ON.
4. Turn the front fog lamps ON.
5. Check the voltage between the fog lamp connector and ground.
Are the voltage readings as specified?
YES
>> GO TO 4.
NO
>> GO TO 3.
FOG
: Front fog lamp ON
OFF
: Front fog lamp OFF
Unit
Location
Fuse No.
Capacity
Front fog lamp
IPDM E/R
56
15A
(+)
(
−)
Voltage
Connector
Terminal
LH
E101
1
Ground
Battery voltage
RH
E102
1
AWLIA1610ZZ
EXL-46
< DTC/CIRCUIT DIAGNOSIS >
FRONT FOG LAMP CIRCUIT
3.
CHECK FRONT FOG LAMP OPEN CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect IPDM E/R connector E123.
3. Check continuity between the IPDM E/R harness connector and
the front fog lamp harness connector.
Does continuity exist?
YES
>> Replace IPDM E/R. Refer to
PCS-28, "Removal and Installation of IPDM E/R"
.
NO
>> Repair the harnesses or connectors.
4.
CHECK FRONT FOG LAMP GROUND CIRCUIT
1. Disconnect the front fog lamp connector.
2. Check continuity between the front fog lamp harness connector
and ground.
Does continuity exist?
YES
>> Inspect the fog lamp bulb.
NO
>> Repair the harness.
A
B
Continuity
Connector
Terminal
Connector
Terminal
LH
E123
50
E101
1
Yes
RH
51
E102
1
AWLIA1611ZZ
Connector
Terminal
—
Continuity
LH
E101
2
Ground
Yes
RH
E102
2
AWLIA1612ZZ
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