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 

PCS-22, "Wiring Diagram"

.

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

H

I

J

K

M

A

B

EXL

N

O

P

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 

EXL-38, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000007355145

Regarding Wiring Diagram information, refer to 

EXL-77, "Wiring Diagram"

 or 

EXL-81, "Wiring Diagram"

.

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

E

F

G

H

I

J

K

M

A

B

EXL

N

O

P

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

P

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 

EXL-41, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000007355148

Regarding Wiring Diagram information, refer to 

EXL-77, "Wiring Diagram"

 or 

EXL-81, "Wiring Diagram"

.

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