Infiniti QX56 (JA60). Manual - part 527

EXTERIOR LIGHTING SYSTEM SYMPTOMS

EXL-137

< SYMPTOM DIAGNOSIS >

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Daytime light system does not activate.

• Either high beam bulb
• Parking brake switch
• Combination switch (lighting 

and turn signal switch)

• BCM
• IPDM E/R
• Daytime light relay
• Harness between IPDM E/R 

and daytime light relay.

Daytime light system description. 
Refer to 

EXL-9, "System Descrip-

tion"

.

Front fog lamp is not 
turned ON.

One side

• Front fog lamp bulb
• Harness between IPDM E/R 

and the front combination lamp

• Front combination lamp
• IPDM E/R

Front fog lamp circuit
Refer to 

EXL-36

.

Both sides

Symptom diagnosis
"BOTH SIDE FRONT FOG LAMPS ARE NOT TURNED ON"
Refer to 

EXL-142

.

Parking lamp is not turned 
ON.

One side

• Fuse
• Parking lamp bulb
• Harness between IPDM E/R 

and the front/rear combination 
lamp

• Front/rear combination lamp
• IPDM E/R

Parking lamp circuit
Refer to 

EXL-38

.

Both sides

Symptom diagnosis
"PARKING, LICENSE PLATE AND TAIL LAMPS ARE NOT TURNED 
ON"
Refer to 

EXL-141

.

Turn signal lamp does not 
blink.

Indicator lamp is nor-
mal.
(The applicable side 
performs the high flash-
er activation).

• Harness between BCM and 

each turn signal lamp

• Turn signal lamp bulb
• Door mirror

Turn signal lamp circuit
Refer to 

EXL-44

.

Turn signal indicator lamp 
does not blink.

One side

Combination meter

—

Both sides
(Always)

• Turn signal indicator lamp sig-

nal

• Combination meter
• BCM

• Combination meter. 

Data monitor "TURN IND".

• BCM (FLASHER)

Active test "FLASHER".

Both sides
(Does blink when acti-
vating the hazard warn-
ing lamp with the 
ignition switch OFF)

• The combination meter power 

supply and the ground circuit

• Combination meter

Combination meter
Power supply and the ground circuit
Refer to 

MWI-28

.

Symptom

Possible cause

Inspection item

EXL-138

< SYMPTOM DIAGNOSIS >

NORMAL OPERATING CONDITION

NORMAL OPERATING CONDITION

Description

INFOID:0000000005146687

XENON HEADLAMPS

The brightness and color of the light may vary slightly immediately after turning the headlamp ON. This condi-

tionwill remain until the xenon bulb becomes stable. This is normal. 

• Illumination time lag may occur between right and left. This is normal.

AUTO LIGHT SYSTEM

The auto light system may not turn the headlamp ON/OFF immediately after passing a dark area or a bright

area (short tunnel, sky bridge, shadowed area etc.). This is normal.

BOTH SIDE HEADLAMPS DO NOT SWITCH TO HIGH BEAM

EXL-139

< SYMPTOM DIAGNOSIS >

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BOTH SIDE HEADLAMPS DO NOT SWITCH TO HIGH BEAM

Description

INFOID:0000000005146688

The headlamps (both sides) do not switch to high beam when the combination switch (lighting and turn signal

switch) is in the HI or PASS setting.

Diagnosis Procedure

INFOID:0000000005146689

1.

COMBINATION SWITCH (LIGHTING AND TURN SIGNAL SWITCH) INSPECTION

Check the combination switch (lighting and turn signal switch). Refer to 

BCS-38, "Diagnosis Procedure"

.

Is the combination switch (lighting and turn signal switch) normal? 

YES

>> GO TO 2.

NO

>> Repair or replace the malfunctioning part.

2.

CHECK HEADLAMP (HI) REQUEST SIGNAL INPUT

CONSULT-III DATA MONITOR

1. Select "HL HI REQ" of IPDM E/R DATA MONITOR item.

2. With operating the combination switch (lighting and turn signal switch), check the monitor status.

Is the item status normal?

YES

>> GO TO 3.

NO

>> Replace BCM. Refer to 

BCS-59, "Removal and Installation"

 .

3.

HEADLAMP (HI) CIRCUIT INSPECTION

Check the headlamp (HI) circuit. Refer to 

EXL-30, "Description"

.

Is the headlamp (HI) circuit normal?

YES

>> Replace IPDM E/R. Refer to 

PCS-35, "Removal and Installation of IPDM E/R"

 .

NO

>> Repair or replace the malfunctioning part.

Monitor item

Condition

Monitor status

HL HI REQ

Combination switch (lighting and 
turn signal switch)
(2ND)

HI or PASS

ON

Except for HI or 
PASS

OFF

EXL-140

< SYMPTOM DIAGNOSIS >

BOTH SIDE HEADLAMPS (LO) ARE NOT TURNED ON

BOTH SIDE HEADLAMPS (LO) ARE NOT TURNED ON

Description

INFOID:0000000005146690

The headlamps (both sides) do not turn ON in any combination switch (lighting and turn signal switch) setting.

Diagnosis Procedure

INFOID:0000000005146691

1.

COMBINATION SWITCH (LIGHTING AND TURN SIGNAL SWITCH) INSPECTION

Check the combination switch (lighting and turn signal switch). Refer to 

BCS-38, "Diagnosis Procedure"

.

Is the combination switch (lighting and turn signal switch) normal?

YES

>> GO TO 2.

NO

>> Repair or replace the malfunctioning part.

2.

CHECK HEADLAMP (LO) REQUEST SIGNAL INPUT

CONSULT-III DATA MONITOR

1. Select "HL LO REQ" of IPDM E/R DATA MONITOR item.

2. With operating the combination switch (lighting and turn signal switch), check the monitor status.

Is the item status normal?

YES

>> GO TO 3.

NO

>> Replace BCM. Refer to 

BCS-59, "Removal and Installation"

 .

3.

HEADLAMP (LO) CIRCUIT INSPECTION

Check the headlamp (LO) circuit. Refer to 

EXL-33, "Description"

.

Is the headlamp (LO) circuit normal?

YES

>> Replace IPDM E/R. Refer to 

PCS-35, "Removal and Installation of IPDM E/R"

 .

NO

>> Repair or replace the malfunctioning part.

Monitor item

Condition

Monitor status

HL LO REQ

Combination switch 
(lighting and turn signal 
switch)

2ND

ON

OFF

OFF