Infiniti M45 (Y34). Manual - part 630

HEADLAMP (FOR USA)

LT-27

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2. 

CHECK HEADLAMP RELAY-1 CONTROL SIGNAL

1.

Install headlamp relay-1.

2.

Remove headlamp relay-2 and disconnect headlamp battery
saver control unit connectors.

3.

Check voltage between headlamp battery saver control unit har-
ness connector M33 terminal 2 (W/PU) and ground.

4.

Check voltage between headlamp battery saver control unit har-
ness connector M34 terminal 8 (W/PU) and ground.

OK or NG

OK

>> INSPECTION END

NG

>> Check harness for open or short between headlamp relay-1 and headlamp battery saver control

unit.

Headlamp Relay-2 Circuit Inspection

AKS003S1

1. 

CHECK HEADLAMP RELAY-2

1.

Turn ignition switch OFF.

2.

Remove headlamp relay-2.

3.

Apply 12V between headlamp relay-2 terminals 1 and 2, and
check continuity between terminals 3 and 5.

OK or NG

OK

>> GO TO 2.

NG

>> Replace headlamp relay-2.

2. 

CHECK HEADLAMP RELAY-2 CONTROL SIGNAL

1.

Install headlamp relay-2.

2.

Remove headlamp relay-1 and disconnect headlamp battery
saver control unit connectors.

3.

Check voltage between headlamp battery saver control unit har-
ness connector M33 terminal 2 (W/PU) and ground.

4.

Check voltage between headlamp battery saver control unit har-
ness connector M34 terminal 8 (W/PU) and ground.

OK or NG

OK

>> INSPECTION END

NG

>> Check harness for open or short between headlamp relay-2 and headlamp battery saver control

unit.

2 (W/PU) - Ground

: Battery voltage should exist.

8 (W/PU) - Ground

: Battery voltage should exist.

PKIA5846E

3 - 5

: Continuity should exist.

PKIA5847E

2 (W/PU) - Ground

: Battery voltage should exist.

8 (W/PU) - Ground

: Battery voltage should exist.

PKIA5848E

LT-28

HEADLAMP (FOR USA)

Headlamp (Low) Circuit Inspection

AKS003S2

1. 

CHECK XENON BULB

1.

Replace xenon bulb with other side bulb or new one.

2.

Check if headlamp illuminates correctly.

OK or NG

OK

>> Replace bulb.

NG

>> GO TO 2.

2. 

CHECK HEADLAMP LH POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Remove headlamp relay-1 and disconnect headlamp LH con-
nector.

3.

Check continuity between headlamp LH harness connector E10
terminal 3 (L) and headlamp relay-1 harness connector E3-4 ter-
minal 5 (L). 

4.

Check continuity between headlamp LH harness connector E10
terminal 3 (L) and ground.

NOTE:
If headlamp LH is normal, skip this procedure and go to 3.

OK or NG

OK

>> GO TO 4.

NG

>> Repair harness or connector.

3. 

CHECK HEADLAMP RH POWER SUPPLY CIRCUIT

1.

Remove headlamp relay-1 and disconnect headlamp RH con-
nector.

2.

Check continuity between headlamp RH harness connector E40
terminal 3 (W) and headlamp relay-1 harness connector E3-4
terminal 6 (W). 

3.

Check continuity between headlamp RH harness connector E40
terminal 3 (W) and ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair harness or connector.

3 (L) - 5 (L)

: Continuity should exist.

3 (L) - Ground

: Continuity should not exist.

PKIA5849E

3 (W) - 6 (W)

: Continuity should exist.

3 (W) - Ground

: Continuity should not exist.

PKIA5850E

HEADLAMP (FOR USA)

LT-29

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4. 

CHECK HEADLAMP GROUND CIRCUIT

Check continuity between headlamp LH harness connector E10 ter-
minal 4 (B) or headlamp RH harness connector E40 terminal 4 (B)
and ground. 

NOTE:
Only the headlamp which does not turn on should be inspected.

OK or NG

OK

>> GO TO 5.

NG

>> Repair harness.

5. 

CHECK HID CONTROL UNIT

1.

Install headlamp relay-1.

2.

Replace HID control unit with other side control unit or new one.

3.

Check if headlamp illuminates correctly.

OK or NG

OK

>> Replace HID control unit.

NG

>> INSPECTION END

Headlamp (High) Circuit Inspection

AKS003S3

1. 

CHECK BULB

1.

Replace bulb with other side bulb or new one.

2.

Check if headlamp illuminates correctly.

OK or NG

OK

>> Replace bulb.

NG

>> GO TO 2.

2. 

CHECK HEADLAMP LH POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Install headlamp relay-2 and disconnect headlamp LH connec-
tor.

3.

Check continuity between headlamp LH harness connector E9
terminal 1 (W/G) and headlamp relay-2 harness connector E5
terminal 5 (W/G).

4.

Check continuity between headlamp LH harness connector E9
terminal 1 (W/G) and ground.

NOTE:
If headlamp LH is normal, skip this procedure and go to 3.
OK or NG

OK

>> GO TO 4.

NG

>> Repair harness or connector.

Unit

Terminals

Continuity

Connector

Terminal (Wire color)

Headlamp LH

E10

4 (B)

Ground

Yes

Headlamp RH

E40

PKIA5851E

1 (W/G) - 5 (W/G)

: Continuity should exist.

1 (W/G) - Ground

: Continuity should not exist.

PKIA5852E

LT-30

HEADLAMP (FOR USA)

3. 

CHECK HEADLAMP RH POWER SUPPLY CIRCUIT

1.

Remove headlamp relay-2 and disconnect headlamp RH con-
nector.

2.

Check continuity between headlamp RH harness connector E39
terminal 1 (W/G) and headlamp relay-2 harness connector E5
terminal 5 (W/G).

3.

Check continuity between headlamp RH harness connector E39
terminal 1 (W/G) and ground.

OK or NG

OK

>> GO TO 5.

NG

>> Repair harness or connector.

4. 

CHECK HEADLAMP LH GROUND CIRCUIT

1.

Disconnect lighting switch connector.

2.

Check continuity between headlamp LH harness connector E9
terminal 2 (L/R) and lighting switch harness connector M55 ter-
minal 9 (L/R).

3.

Check continuity between headlamp LH harness connector E9
terminal 2 (L/R) and ground.

OK or NG

OK

>> INSPECTION END

NG

>> Repair harness or connector.

5. 

CHECK HEADLAMP RH GROUND CIRCUIT

1.

Disconnect lighting switch connector.

2.

Check continuity between headlamp RH harness connector E39
terminal 2 (P) and lighting switch harness connector M55 termi-
nal 6 (P).

3.

Check continuity between headlamp RH harness connector E39
terminal 2 (P) and ground. 

OK or NG

OK

>> INSPECTION END

NG

>> Repair harness or connector.

1 (W/G) - 5 (W/G)

: Continuity should exist.

1 (W/G) - Ground

: Continuity should not exist.

PKIA5853E

2 (L/R) - 9 (L/R)

: Continuity should exist.

2 (L/R) - Ground

: Continuity should not exist.

PKIA5854E

2 (P) - 6 (P)

: Continuity should exist.

2 (P) - Ground

: Continuity should not exist.

PKIA5855E