Infiniti M35/M45 Y50. Manual - part 871

HEADLAMP (FOR USA) - CONVENTIONAL TYPE -

LT-29

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Headlamp High Beam Does Not Illuminate (One Side)

NKS003OB

1. 

CHECK BULB

Check bulb of lamp which does not illuminate.
OK or NG

OK

>> GO TO 2.

NG

>> Replace headlamp bulb.

2. 

CHECK HEADLAMP INPUT SIGNAL

With CONSULT-II

1.

Turn ignition switch OFF.

2.

Disconnect front combination lamp RH or LH connector.

3.

Select “IPDM E/R” on CONSULT-II. Select “ACTIVE TEST” on “SELECT DIAG MODE” screen.

4.

Select “LAMPS” on “SELECT TEST ITEM” screen.

5.

Touch “HI” screen.

6.

When headlamp high beam is operating, check voltage between
front combination lamp RH or LH harness connector and
ground. (Headlamp high beam repeats ON-OFF every 1 sec-
ond.)

Without CONSULT-II

1.

Turn ignition switch OFF.

2.

Disconnect front combination lamp RH or LH connector.

3.

Start auto active test. Refer to 

PG-23, "Auto Active Test"

 .

4.

When headlamp high beam is operating, check voltage between front combination lamp RH or LH har-
ness connector and ground.

OK or NG

OK

>> GO TO 3.

NG

>> GO TO 4.

Terminal

Voltage 

(Approx.)

(+)

(-)

Front combination lamp 

connector

Terminal

RH

E47

6

Ground

Battery voltage

LH

E54

6

Terminal

Voltage 

(Approx.)

(+)

(-)

Front combination lamp 

connector

Terminal

RH

E47

6

Ground

Battery voltage

LH

E54

6

SKIB4749E

LT-30

HEADLAMP (FOR USA) - CONVENTIONAL TYPE -

3. 

CHECK HEADLAMP GROUND

1.

Turn ignition switch OFF.

2.

Check continuity between front combination lamp RH or LH har-
ness connector and ground.

OK or NG

OK

>> Check connecting condition headlamp harness and con-

nector. 

NG

>> Repair harness or connector.

4. 

CHECK CIRCUIT BETWEEN IPDM E/R AND FRONT COMBINATION LAMP

1.

Turn ignition switch OFF.

2.

Disconnect IPDM E/R connector and front combination lamp RH or LH connector.

3.

Check continuity between IPDM E/R harness connector (A) and
front combination lamp RH or LH harness connector (B).

4.

Check continuity between IPDM E/R harness connector (A) and
ground.

OK or NG

OK

>> Replace IPDM E/R. Refer to 

PG-31, "Removal and Installation of IPDM E/R"

 .

NG

>> Repair harness or connector.

High Beam Indicator Lamp Does Not Illuminate

NKS003OC

1. 

CHECK UNIFIED METER AND A/C AMP.

1.

Select “METER A/C AMP” on CONSULT-II, and perform self-
diagnosis for “METER A/C AMP”.

2.

Check if malfunction is indicated.

Is malfunction indicated?

YES

>> Repair or replace malfunctioning parts.

NO

>> GO TO 2.

Front combination lamp 

connector

Terminal

Ground

Continuity

RH

E47

2

Yes

LH

E54

2

SKIB4750E

Circuit

A

B

Continuity

Connector

Terminal

Connector

Terminal

RH

E7

27

E47

6

Yes

LH

28

E54

6

A

Ground

Continuity

Connector

Terminal

RH

E7

27

No

LH

28

SKIB4753E

PKIA6866E

HEADLAMP (FOR USA) - CONVENTIONAL TYPE -

LT-31

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2. 

CHECK COMBINATION METER INPUT SIGNAL

1.

Select “METER A/C AMP” on CONSULT-II. 

2.

Select “DATA MONITOR” on “SELECT DIAG MODE” screen.
Make sure that “HI

−

BEAM IND” turns ON-OFF linked with oper-

ation of lighting switch.

OK or NG

OK

>> Replace combination meter. Refer to 

DI-27, "Removal

and Installation of Combination Meter"

 .

NG

>> Replace unified meter and A/C amp. Refer to 

DI-38,

"Removal and Installation of Unified Meter and A/C
Amp."

 .

Headlamp Low Beam Does Not Illuminate (Both Sides)

NKS003OD

1. 

CHECK COMBINATION SWITCH INPUT SIGNAL 

With CONSULT-II

1.

Select “BCM” on CONSULT-II. Select “HEAD LAMP” on
“SELECT TEST ITEM” screen.

2.

Select “DATA MONITOR” on “SELECT DIAG MODE” screen.
Make sure that “HEAD LAMP SW 1” and “HEAD LAMP SW 2”
turns ON-OFF linked with operation of lighting switch.

Without CONSULT-II

Refer to 

LT-239, "Combination Switch Inspection"

 .

OK or NG

OK

>> GO TO 2.

NG

>> Check combination switch (lighting switch). Refer to 

LT-239, "Combination Switch Inspection"

 .

2. 

HEADLAMP ACTIVE TEST

With CONSULT-II

1.

Select “IPDM E/R” on CONSULT-II. Select “ACTIVE TEST” on
“SELECT DIAG MODE” screen.

2.

Select “LAMPS” on “SELECT TEST ITEM” screen. 

3.

Touch “LO” screen.

4.

Make sure headlamp low beam operation.

Without CONSULT-II

1.

Start auto active test. Refer to 

PG-23, "Auto Active Test"

 .

2.

Make sure headlamp low beam operation.

OK or NG

OK

>> GO TO 3.

NG

>> GO TO 4.

When lighting switch is in 
the HIGH BEAM position

: HI

−

BEAM IND ON

PKID0081E

When lighting switch is 2ND 
position

: HEAD LAMP SW 1 ON
: HEAD LAMP SW 2 ON

PKIA7586E

Headlamp low beam should operate.

Headlamp low beam should operate.

SKIA5774E

LT-32

HEADLAMP (FOR USA) - CONVENTIONAL TYPE -

3. 

CHECK IPDM E/R

1.

Select “IPDM E/R” on CONSULT-II. Select “DATA MONITOR”
on “SELECT DIAG MODE” screen.

2.

Make sure “HL LO REQ” turns ON when lighting switch is in
2ND position.

OK or NG

OK

>> Replace IPDM E/R. Refer to 

PG-31, "Removal and

Installation of IPDM E/R"

 .

NG

>> Replace BCM. Refer to 

BCS-15, "Removal and Installa-

tion of BCM"

 .

4. 

CHECK HEADLAMP INPUT SIGNAL

With CONSULT-II

1.

Turn ignition switch OFF.

2.

Disconnect front combination lamp RH and LH connector.

3.

Select “IPDM E/R” on CONSULT-II. Select “ACTIVE TEST” on “SELECT DIAG MODE” screen.

4.

Select “LAMPS” on “SELECT TEST ITEM” screen. 

5.

Touch “LO” screen.

6.

When headlamp low beam is operating, check voltage between
front combination lamp (RH and LH) harness connector and
ground.

Without CONSULT-II

1.

Turn ignition switch OFF.

2.

Disconnect front combination lamp RH and LH connector.

3.

Start auto active test. Refer to 

PG-23, "Auto Active Test"

 .

4.

When headlamp low beam is operating, check voltage between front combination lamp (RH and LH) har-
ness connector and ground.

OK or NG

OK

>> GO TO 5.

NG

>> GO TO 6.

When lighting switch is 2ND 
position

: HL LO REQ ON

PKIA7644E

Terminal

Voltage 

(Approx.)

(+)

(-)

Front combination lamp 

connector

terminal

RH

E47

8

Ground

Battery voltage

LH

E54

8

Terminal

Voltage 

(Approx.)

(+)

(-)

Front combination lamp 

connector

terminal

RH

E47

8

Ground

Battery voltage

LH

E54

8

SKIB4758E