Infiniti QX56 (JA60). Manual - part 500

POWER SUPPLY AND GROUND CIRCUIT

EXL-29

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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

EXL-30

< COMPONENT DIAGNOSIS >

HEADLAMP (HI) CIRCUIT

HEADLAMP (HI) CIRCUIT

Description

INFOID:0000000005370270

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:0000000005146640

1.

CHECK HEADLAMP (HI) OPERATION

WITHOUT CONSULT-III

1. Start IPDM E/R auto active test. Refer to 

PCS-12, "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 

EXL-30, "Diagnosis Procedure - Without Daytime Light System"

, 

EXL-31, "Diagnosis

Procedure - With Daytime Light System"

.

Diagnosis Procedure - Without Daytime Light System

INFOID:0000000005146641

Regarding Wiring Diagram information, refer to 

EXL-52, "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

>> 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

HEADLAMP (HI) CIRCUIT

EXL-31

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1. Turn the ignition switch OFF.

2. Disconnect the front combination lamp connector E11 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.

Are the voltage readings as specified?

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.

Diagnosis Procedure - With Daytime Light System

INFOID:0000000005146642

Regarding Wiring Diagram information, refer to 

EXL-56, "Wiring Diagram"

.

1.

CHECK HEADLAMP (HI) FUSES

1. Turn the ignition switch OFF.

2. Check that the following fuses are not open.

(+)

(

−)

Voltage

Connector

Terminal

LH

E11

6

Ground

Battery voltage

RH

E107

6

ALLIA0852ZZ

A

B

Continuity

Connector

Terminal

Connector

Terminal

LH

E123

55

E11

6

Yes

RH

56

E107

6

AWLIA1371ZZ

Connector

Terminal

—

Continuity

LH

E11

2

Ground

Yes

RH

E107

2

ALLIA0854ZZ

EXL-32

< COMPONENT DIAGNOSIS >

HEADLAMP (HI) CIRCUIT

Is the fuse open?

YES

>> Repair the harness and replace the fuse.

NO

>> GO TO 2.

2.

CHECK HEADLAMP (HI) OUTPUT VOLTAGE

1. Turn the ignition switch OFF.

2. Disconnect the front combination lamp connector E6 or E108.

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.

Are the voltage readings as specified?

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 - RH>>Repair the harness.

NO - LH >>Inspect daytime light relay. If OK, repair harness. If NG,

replace the daytime light relay. 

Unit

Location

Fuse No.

Capacity

Headlamp HI (LH) 

IPDM E/R

35

10A

Headlamp HI (RH) 

IPDM E/R

34

10A

(+)

(

−)

Voltage

Connector

Terminal

LH

E6

6

Ground

Battery voltage

RH

E108

6

ALLIA0852ZZ

A

B

Continuity

Connector

Terminal

Connector

Terminal

LH

E123

55

E6

6

Yes

RH

56

E108

6

AWLIA1371ZZ

Connector

Terminal

—

Continuity

LH

E6

2

Ground

Yes

RH

E108

2

ALLIA0854ZZ