Nissan Pathfinder (2012 year). Manual — part 365
EXL-36
< DTC/CIRCUIT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
Does continuity exist?
YES
>> Inspection End.
NO
>> Repair or replace harness.
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM) : Di-
agnosis Procedure
INFOID:0000000007827532
Regarding Wiring Diagram information, refer to
.
1.
CHECK FUSES AND FUSIBLE LINK
Check that the following IPDM E/R fuses or fusible link are not blown.
Is the fuse blown?
YES
>> Replace the blown fuse or fusible link after repairing the affected circuit.
NO
>> GO TO 2
2.
CHECK BATTERY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R.
3. Check voltage between IPDM E/R harness connectors and
ground.
Is the measurement value normal?
YES
>> GO TO 3
NO
>> Repair or replace harness.
3.
CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
BCM
Ground
Continuity
Connector
Terminal
M20
67
Yes
LIIA0915E
Terminal No.
Signal name
Fuses and fusible link No.
1
Battery
A, D
2
Battery
C
Terminals
Ignition switch position
(+)
(
−
)
OFF
ON
START
Connector
Terminal
E118
1
Ground
Battery
voltage
Battery
voltage
Battery
voltage
2
Battery
voltage
Battery
voltage
Battery
voltage
SKIA1987E
August 2012
2012 Pathfinder
POWER SUPPLY AND GROUND CIRCUIT
EXL-37
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
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A
B
EXL
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2. Check continuity between IPDM E/R harness connectors and
ground.
Does continuity exist?
YES
>> Inspection End.
NO
>> Repair or replace harness.
IPDM E/R
Ground
Continuity
Connector
Terminal
E122 (A)
38
Yes
E124 (B)
59
AWMIA0024ZZ
August 2012
2012 Pathfinder
EXL-38
< DTC/CIRCUIT DIAGNOSIS >
HEADLAMP (HI) CIRCUIT
HEADLAMP (HI) CIRCUIT
Description
INFOID:0000000007355143
The IPDM E/R (intelligent power distribution module engine room) controls the headlamp high relay based on
inputs from the BCM via the CAN communication lines. When the headlamp high relay is energized, power
flows through fuses 34 and 35, located in the IPDM E/R. Power then flows to the front headlamp high beam.
Component Function Check
INFOID:0000000007355144
1.
CHECK HEADLAMP (HI) OPERATION
WITHOUT CONSULT
1. Start IPDM E/R auto active test. Refer to
PCS-9, "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.
WITH CONSULT
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:0000000007355145
Regarding Wiring Diagram information, refer to
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
>> Replace the fuse after repairing the affected circuit.
NO
>> GO TO 2
2.
CHECK HEADLAMP (HI) OUTPUT VOLTAGE
1. Turn the ignition switch OFF.
2. Disconnect the front headlamp connector.
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 headlamp connector and ground.
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
(+)
(
−
)
Voltage
Connector
Terminal
WKIA4989E
August 2012
2012 Pathfinder
HEADLAMP (HI) CIRCUIT
EXL-39
< DTC/CIRCUIT DIAGNOSIS >
C
D
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F
G
H
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A
B
EXL
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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 headlamp harness connector (B).
Does continuity exist?
YES
>> Replace IPDM E/R. Refer to
PCS-29, "Removal and Installation of IPDM E/R"
.
NO
>> Repair the harnesses or connectors.
4.
CHECK FRONT HEADLAMP (HI) GROUND CIRCUIT
Check continuity between the front headlamp harness connector ter-
minal 2 and ground.
Does continuity exist?
YES
>> Inspect the headlamp bulb.
NO (Except LH with DTRL)>> Repair the harness.
NO (LH with DTRL)>> GO TO 5.
5.
CHECK CONTINUITY BETWEEN FRONT HEADLAMP LH (HI) AND DAYTIME LIGHT RELAY 1
1. Disconnect daytime light relay 1 connector.
2. Check continuity between front headlamp LH harness connector and daytime light relay 1 harness con-
nector.
Does continuity exist?
YES
>> GO TO 6.
NO
>> Repair the harness or connector.
6.
CHECK DAYTIME LIGHT RELAY 1 GROUND CIRCUIT
Check continuity between daytime light relay 1 harness connector and ground.
LH
E11 (without DTRL)
1
Ground
Battery voltage
E6 (with DTRL)
RH
E107
A
B
Continuity
Connector
Terminal
Connector
Terminal
LH
E123
55
E11 (without DTRL)
1
Yes
E6 (with DTRL)
RH
56
E107
ALLIA0623GB
Connector
Terminal
—
Continuity
LH
E11 (without DTRL)
2
Ground
Yes
E6 (with DTRL)
RH
E107
ALLIA0624GB
Front headlamp LH
Daytime light relay 1
Continuity
Connector
Terminal
Connector
Terminal
E6
2
E103
3
Yes
August 2012
2012 Pathfinder
EXL-40
< DTC/CIRCUIT DIAGNOSIS >
HEADLAMP (HI) CIRCUIT
Does continuity exist?
YES
>> GO TO 7.
NO
>> Repair the harness or connector.
7.
CHECK DAYTIME LIGHT RELAY 1
Check daytime light relay 1. Refer to
EXL-46, "Component Inspection"
Is the inspection result normal?
YES
>> Inspect the headlamp bulb.
NO
>> Replace daytime light relay 1.
Daytime light relay 1
Ground
Continuity
Connector
Terminal
E103
4
Yes
August 2012
2012 Pathfinder
HEADLAMP (LO) CIRCUIT
EXL-41
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
M
A
B
EXL
N
O
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HEADLAMP (LO) CIRCUIT
Description
INFOID:0000000007355146
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 headlamp low beams.
Component Function Check
INFOID:0000000007355147
1.
CHECK HEADLAMP (LO) OPERATION
WITHOUT CONSULT
1. Start IPDM E/R auto active test. Refer to
PCS-9, "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.
WITH CONSULT
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:0000000007355148
Regarding Wiring Diagram information, refer to
or
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
>> Replace the fuse after repairing the affected circuit.
NO
>> GO TO 2
2.
CHECK HEADLAMP (LO) OUTPUT VOLTAGE
1. Turn the ignition switch OFF.
2. Disconnect the front headlamp 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 headlamp connector terminal 3 and ground.
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
(+)
(
−
)
Voltage
Connector
Terminal
ALLIA0625GB
August 2012
2012 Pathfinder
EXL-42
< DTC/CIRCUIT DIAGNOSIS >
HEADLAMP (LO) CIRCUIT
Is battery voltage present?
YES
>> GO TO 8
NO (Except LH with DTRL)>>CHECK HEADLAMP (LO) CIRCUIT FOR OPEN GO TO 3
NO (LH with DTRL)>>CHECK HEADLAMP (LO) CIRCUIT FOR OPEN GO TO 4
3.
CHECK HEADLAMP (LO) CIRCUIT FOR OPEN (EXCEPT LH WITH DTRL)
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 headlamp harness connector (B).
Does continuity exist?
YES
>> Replace IPDM E/R. Refer to
PCS-29, "Removal and Installation of IPDM E/R"
.
NO
>> Repair the harnesses or connectors.
4.
CHECK HEADLAMP (LO) CIRCUIT FOR OPEN (LH WITH DTRL)
1. Turn the ignition switch OFF.
2. Disconnect IPDM E/R connector E123 and daytime light relay 2 connector.
3. Check continuity between the IPDM E/R harness connector and the daytime light relay 2 harness connec-
tor.
4. Check continuity between the daytime light relay 2 harness connector and the front headlamp LH harness
connector.
Does continuity exist?
YES
>> GO TO 5
NO
>> Repair the harnesses or connectors.
5.
CHECK DAYTIME LIGHT RELAY 2 CIRCUIT FOR OPEN
1. Check continuity between the daytime light relay 2 harness connector and the front headlamp LH harness
connector.
2. Check continuity between the daytime light relay 2 harness connector and ground.
LH
E11 (without DTRL)
3
Ground
Battery voltage
E6 (with DTRL)
RH
E107
A
B
Continuity
Connector
Terminal
Connector
Terminal
LH
E123
52
E11
3
Yes
RH
54
E107
ALLIA0626GB
IPDM E/R
Daytime light relay 2
Continuity
Connector
Terminal
Connector
Terminal
E123
52
E104
5
Yes
2
Daytime light relay 2
Front headlamp LH
Continuity
Connector
Terminal
Connector
Terminal
E104
3
E6
3
Yes
Daytime light relay 2
Front headlamp LH
Continuity
Connector
Terminal
Connector
Terminal
E104
3
E6
3
Yes
August 2012
2012 Pathfinder
HEADLAMP (LO) CIRCUIT
EXL-43
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
M
A
B
EXL
N
O
P
Is the measurement value normal?
YES
>> GO TO 6
NO
>> Repair the harnesses or connectors.
6.
CHECK DAYTIME LIGHT RELAY 2 GROUND CIRCUIT
Check continuity between daytime light relay 2 harness connector and ground.
Does continuity exist?
YES
>> GO TO 7
NO
>> Repair the harness or connector.
7.
CHECK DAYTIME LIGHT RELAY 2
Check daytime light relay 2. Refer to
EXL-44, "Component Inspection"
Is the inspection result normal?
YES
>> Replace IPDM E/R. Refer to
PCS-29, "Removal and Installation of IPDM E/R"
.
NO
>> Replace daytime light relay 2.
8.
CHECK FRONT HEADLAMP (LO) GROUND CIRCUIT
Check continuity between the front headlamp harness connector ter-
minal 2 and ground.
Does continuity exist?
YES
>> Inspect the headlamp bulb.
NO (Except LH with DTRL)>> Repair the harness.
NO (LH with DTRL)>> GO TO 9
9.
CHECK CONTINUITY BETWEEN FRONT HEADLAMP LH (HI) AND DAYTIME LIGHT RELAY 1
1. Disconnect daytime light relay 1 connector.
2. Check continuity between front headlamp LH harness connector and daytime light relay 1 harness con-
nector.
Does continuity exist?
YES
>> GO TO 10
NO
>> Repair the harness or connector.
10.
CHECK DAYTIME LIGHT RELAY 1 GROUND CIRCUIT
Check continuity between daytime light relay 1 harness connector and ground.
Daytime light relay 2
Ground
Continuity
Connector
Terminal
E104
3
No
Daytime light relay 2
Ground
Continuity
Connector
Terminal
E104
1
Yes
Connector
Terminal
—
Continuity
LH
E11 (without DTRL)
2
Ground
Yes
E6 (with DTRL)
RH
E107
ALLIA0624GB
Front headlamp LH
Daytime light relay 1
Continuity
Connector
Terminal
Connector
Terminal
E6
2
E103
3
Yes
August 2012
2012 Pathfinder
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