Infiniti FX35, FX50 (S51). Manual - part 1018

EXL-68

< DTC/CIRCUIT DIAGNOSIS >

[XENON TYPE]

HEADLAMP (HI) CIRCUIT

Is the measurement value normal?

YES

>> GO TO 2.

NO

>> GO TO 3.

2.

CHECK HEADLAMP (HI) OPEN CIRCUIT

1.

Turn the ignition switch OFF.

2.

Disconnect IPDM E/R connector.

3.

Check continuity between the IPDM E/R harness connector and the front combination lamp harness con-
nector.

Does continuity exist?

YES

>> GO TO 5. 

NO

>> Repair the harnesses or connectors.

3.

CHECK HEADLAMP (HI) FUSE

1.

Turn the ignition switch OFF.

2.

Check that the following fuses are not fusing.

Is the fuse fusing?

YES

>> GO TO 4.

NO

>> Replace IPDM E/R.

4.

CHECK FRONT COMBINATION LAMP (HI) SHORT CIRCUIT

1.

Disconnect IPDM E/R connector.

2.

Check continuity between the IPDM E/R harness connector terminal and the ground.

Does continuity exist?

YES

>> Repair the harnesses or connectors. And then replace the fuse.

NO

>> Replace the fuse. (Replace IPDM E/R if the fuse is fusing again.)

Terminals

Test item

Voltage

(Approx.)

(+)

(

−

)

IPDM E/R

Ground

EXTERNAL 

LAMPS

Connector

Terminal

RH

E8

89

Hi

Battery 
voltage

Off

0 V

LH

90

Hi

Battery 
voltage

Off

0 V

IPDM E/R

Front combination lamp

Continuity

Connector

Terminal

Connector

Terminal

RH

E8

89

E28

1

Existed

LH

90

E58

1

Unit

Location

Fuse No.

Capacity

Headlamp HI (RH) 

IPDM E/R

#55

10 A

Headlamp HI (LH) 

IPDM E/R

#54

10 A

IPDM E/R 

Ground

Continuity

Connector

Terminal

RH

E8

89

Not existed

LH

90

HEADLAMP (HI) CIRCUIT

EXL-69

< DTC/CIRCUIT DIAGNOSIS >

[XENON TYPE]

C

D

E

F

G

H

I

J

K

M

A

B

EXL

N

O

P

5.

CHECK HEADLAMP (HI) GROUND OPEN CIRCUIT

Check continuity between the front combination lamp harness connector and the ground.

Does continuity exist?

YES

>> Replace the front combination lamp.

NO

>> Repair the harnesses or connectors.

Front combination lamp 

Ground

Continuity

Connector

Terminal

RH

E28

3

Existed

LH

E58

3

EXL-70

< DTC/CIRCUIT DIAGNOSIS >

[XENON TYPE]

HEADLAMP (LO) CIRCUIT

HEADLAMP (LO) CIRCUIT

Description

INFOID:0000000005244733

Headlamp (LO) circuit is connected to HID control unit integrated in the headlamp. Headlamp (LO) circuit turns
xenon headlamp ON.
For the details of HID control unit and the xenon headlamp, refer to 

EXL-72, "Description"

.

Component Function Check

INFOID:0000000005244734

1.

CHECK HEADLAMP (LO) OPERATION

IPDM E/R AUTO ACTIVE TEST

1.

Activate IPDM E/R auto active test. Refer to 

PCS-11, "Diagnosis Description"

.

2.

Check that the headlamp is turned ON.

CONSULT-III ACTIVE TEST

1.

Select "EXTERNAL LAMPS" of IPDM E/R active test item.

2.

With operating the test items, check that the headlamp is turned ON.

Is the headlamp turned ON?

YES

>> Headlamp (LO) is normal.

NO

>> Refer to 

EXL-70, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005244735

1.

CHECK HEADLAMP (LO) OUTPUT VOLTAGE

CONSULT-III ACTIVE TEST

1.

Turn the ignition switch OFF.

2.

Disconnect the headlamp connector.

3.

Turn the ignition switch ON.

4.

Select "EXTERNAL LAMPS" of IPDM E/R active test item.

5.

With operating the test items, check the voltage between the IPDM E/R harness connector and the
ground.

Is the measurement value normal?

YES

>> GO TO 2.

NO

>> GO TO 3.

2.

CHECK HEADLAMP (LO) OPEN CIRCUIT

1.

Turn the ignition switch OFF.

2.

Disconnect IPDM E/R connector.

3.

Check continuity between the IPDM E/R harness connector and the headlamp harness connector.

Low

: Headlamp ON

Off

: Headlamp OFF

Terminals

Test item

Voltage

(Approx.)

(+)

(

−

)

IPDM E/R

Ground

EXTERNAL 

LAMPS

Connector

Terminal

RH

E8

83

Low

Battery 
voltage

Off

0 V

LH

84

Low

Battery 
voltage

Off

0 V

HEADLAMP (LO) CIRCUIT

EXL-71

< DTC/CIRCUIT DIAGNOSIS >

[XENON TYPE]

C

D

E

F

G

H

I

J

K

M

A

B

EXL

N

O

P

Does continuity exist?

YES

>> GO TO 5.

NO

>> Repair the harnesses or connectors.

3.

CHECK HEADLAMP (LO) FUSE

1.

Turn the ignition switch OFF.

2.

Check that the following fuses are not fusing.

Is the fuse fusing?

YES

>> GO TO 4.

NO

>> Replace IPDM E/R.

4.

CHECK HEADLAMP (LO) SHORT CIRCUIT

1.

Disconnect IPDM E/R connector.

2.

Check continuity between the IPDM E/R harness connector and the ground.

Does continuity exist?

YES

>> Repair the harnesses or connectors. And then replace the fuse.

NO

>> Replace the fuse. (Replace IPDM E/R if the fuse is fusing again.)

5.

CHECK HEADLAMP (LO) GROUND OPEN CIRCUIT

Check continuity between the headlamp harness connector and the ground.

Does continuity exist?

YES

>> Perform the xenon headlamp diagnosis. Refer to 

EXL-72, "Description"

.

NO

>> Repair the harnesses or connectors.

IPDM E/R

Headlamp

Continuity

Connector

Terminal

Connector

Terminal

RH

E8

83

E25

1

Existed

LH

84

E55

1

Unit

Lotion

Fuse No.

Capacity

Headlamp LO (RH) 

IPDM E/R

#57

15 A

Headlamp LO (LH) 

IPDM E/R

#56

15 A

IPDM E/R

Ground

Continuity

Connector

Terminal

RH

E8

83

Not existed

LH

84

Headlamp

Ground

Continuity

Connector

Terminal

RH

E25

2

Existed

LH

E55

2