Nissan Frontier D40. Instruction — part 641
HEADLAMP (HI) CIRCUIT
EXL-37
< COMPONENT DIAGNOSIS >
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HEADLAMP (HI) CIRCUIT
Description
INFOID:0000000005561521
The IPDM E/R (intelligent power distribution module engine room) controls the headlamp LH high and head-
lamp RH high relays based on inputs from the BCM via the CAN communication lines. When the headlamp LH
high and headlamp RH high relays are energized, power flows through fuses 34 and 35, located in the IPDM
E/R. Power then flows to the front combination lamps to the headlamp high beam.
Component Function Check
INFOID:0000000005274736
1.
CHECK HEADLAMP (HI) OPERATION
WITHOUT CONSULT-III
1.
Start IPDM E/R auto active test. Refer to
PCS-13, "Diagnosis Description"
2.
Check that the headlamp switches to the high beam.
NOTE:
HI/LO is repeated 1 second each when using the IPDM E/R auto active test.
CONSULT-III
1.
Select "EXTERNAL LAMPS" of IPDM E/R active test item.
2.
With the test item operating, check that the headlamp switches to high beam.
Does the headlamp switch to high beam?
YES
>> Headlamp (HI) circuit is normal.
NO
>> Refer to
.
Diagnosis Procedure
INFOID:0000000005274737
Regarding Wiring Diagram information, refer to
(with DTRL).
1.
CHECK HEADLAMP (HI) FUSES
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 HEADLAMP (HI) OUTPUT VOLTAGE
HI
: Headlamp switches to the high beam.
OFF
: Headlamp OFF
Unit
Location
Fuse No.
Capacity
Headlamp HI (LH)
IPDM E/R
35
10A
Headlamp HI (RH)
IPDM E/R
34
10A
EXL-38
< COMPONENT DIAGNOSIS >
HEADLAMP (HI) CIRCUIT
1.
Turn the ignition switch OFF.
2.
Disconnect the front combination lamp connector E7 (with
DTRL), E11(without DTRL) or E107.
3.
Turn the ignition switch ON.
4.
Turn the high beam headlamps ON.
5.
With the high beam headlamps ON, check the voltage between
the combination lamp connector and ground.
Is battery voltage present?
YES
>> GO TO 4
NO
>> GO TO 3
3.
CHECK HEADLAMP (HI) 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
>> GO TO 4
NO
>> Repair the harnesses or connectors.
4.
CHECK FRONT COMBINATION LAMP (HI) 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.
(+)
(
−
)
Voltage
Connector
Terminal
LH
E7 (with DTRL)
1
Ground
Battery voltage
E11 (without DTRL)
RH
E107
WKIA4989E
A
B
Continuity
Connector
Terminal
Connector
Terminal
LH
E123
55
E7 (with DTRL)
1
Yes
E11 (without DTRL)
RH
56
E107
ALLIA0623GB
Connector
Terminal
—
Continuity
LH
E7 (with DTRL)
2
Ground
Yes
E11 (without DTRL)
RH
E107
ALLIA0624GB
HEADLAMP (LO) CIRCUIT
EXL-39
< COMPONENT DIAGNOSIS >
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B
EXL
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HEADLAMP (LO) CIRCUIT
Description
INFOID:0000000005274738
The IPDM E/R (intelligent power distribution module engine room) controls the headlamp low relay based on
inputs from the BCM via the CAN communication lines. When the headlamp low relay is energized, power
flows through fuses 40 and 41, located in the IPDM E/R. Power then flows to the front combination lamps to
the headlamp low beam.
Component Function Check
INFOID:0000000005274739
1.
CHECK HEADLAMP (LO) OPERATION
WITHOUT CONSULT-III
1.
Start IPDM E/R auto active test. Refer to
PCS-13, "Diagnosis Description"
2.
Check that the headlamp is turned ON.
NOTE:
HI/LO is repeated 1 second each when using the IPDM E/R auto active test.
CONSULT-III
1.
Select "EXTERNAL LAMPS" of IPDM E/R active test item.
2.
With the test items operating, check that the headlamp is turned ON.
Is the headlamp turned ON?
YES
>> Headlamp (LO) is normal.
NO
>> Refer to
.
Diagnosis Procedure
INFOID:0000000005274740
Regarding Wiring Diagram information, refer to
(with DTRL).
1.
CHECK HEADLAMP (LO) FUSES
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 HEADLAMP (LO) OUTPUT VOLTAGE
LO
: Headlamp ON
OFF
: Headlamp OFF
Unit
Location
Fuse No.
Capacity
Headlamp LO (LH)
IPDM E/R
40
15A
Headlamp LO (RH)
IPDM E/R
41
15A
EXL-40
< COMPONENT DIAGNOSIS >
HEADLAMP (LO) CIRCUIT
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 battery voltage present?
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.
3.
Check continuity between the IPDM E/R harness connector (A)
and the front combination lamp harness connector (B).
Does continuity exist?
YES
>> GO TO 4
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.
(+)
(
−
)
Voltage
Connector
Terminal
LH
E7 (with DTRL)
3
Ground
Battery voltage
E11 (without DTRL)
RH
E107
ALLIA0625GB
A
B
Continuity
Connector
Terminal
Connector
Terminal
LH
E123
52
E7 (with DTRL)
3
Yes
E11 (without DTRL)
RH
54
E107
ALLIA0626GB
Connector
Terminal
—
Continuity
LH
E7 (with DTRL)
2
Ground
Yes
E11 (without DTRL)
RH
E107
ALLIA0624GB
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