Infiniti M45 (Y34). Manual - part 639

HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -

LT-63

C

D

E

F

G

H

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J

L

M

A

B

LT

5. 

CHECK DAYTIME LIGHT CONTROL UNIT POWER SUPPLY CIRCUIT

1.

Disconnect daytime light control unit connector.

2.

Turn ignition switch ON.

3.

Check voltage between daytime light control unit harness con-
nector E28 terminal 3 (W/G) and ground.

OK or NG

OK

>> GO TO 6.

NG

>> Check harness for open or short between daytime light

control unit and fuse.

6. 

CHECK HEADLAMP BATTERY SAVER CONTROL UNIT GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Check continuity between headlamp battery saver control unit
harness connector terminals and ground.

OK or NG

OK

>> GO TO 7.

NG

>> Check harness ground circuit.

7. 

CHECK DAYTIME LIGHT CONTROL UNIT GROUND CIRCUIT

Check continuity between daytime light control unit harness connec-
tor E26 terminal 16 (B) and ground.

OK or NG

OK

>> INSPECTION END

NG

>> Repair harness.

3 (W/G) - Ground

: Battery voltage should exist.

PKIA5882E

Terminals

Continuity

Connector

Terminal (Wire color)

M33

4 (B)

Ground

Yes

M34

11 (B)

PKIA5883E

16 (B) - Ground

: Continuity should exist.

PKIA5884E

LT-64

HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -

Headlamp Relay-1 Circuit Inspection

AKS003SE

1. 

CHECK HEADLAMP RELAY-1

1.

Turn ignition switch OFF.

2.

Remove headlamp relay-1.

3.

Apply 12V between headlamp relay-1 terminals 2 and 1, and
check continuity between terminals 3 and 5 and between termi-
nals 6 and 7.

OK or NG

OK

>> GO TO 2.

NG

>> Replace headlamp relay-1.

2. 

CHECK HEADLAMP RELAY-1 CONTROL SIGNAL

1.

Install headlamp relay-1.

2.

Disconnect headlamp relay-2 and headlamp battery saver con-
trol 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

AKS003SF

1. 

CHECK HEADLAMP RELAY-2

1.

Remove headlamp relay-2.

2.

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.

3 - 5

: Continuity should exist.

6 - 7

: Continuity should exist.

PKIA5885E

2 (W/PU) - Ground

: Battery voltage should exist.

8 (W/PU) - Ground

: Battery voltage should exist.

PKIA5886E

3 - 5

: Continuity should exist.

PKIA5887E

HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -

LT-65

C

D

E

F

G

H

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J

L

M

A

B

LT

2. 

CHECK HEADLAMP RELAY-2 CONTROL SIGNAL

1.

Install headlamp relay-2.

2.

Disconnect headlamp relay-1 and headlamp battery saver con-
trol 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.

Headlamp (Low) Circuit Inspection

AKS003SG

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. 

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.

2 (W/PU) - Ground

: Battery voltage should exist.

8 (W/PU) - Ground

: Battery voltage should exist.

PKIA5888E

3 (L) - 5

: Continuity should exist.

3 (L) - Ground

: Continuity should not exist.

PKIA5889E

LT-66

HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -

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. 

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.

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 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 LH (High) Circuit Inspection

AKS003TU

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.

3 (W) - 6

: Continuity should exist.

3 (W) - Ground

: Continuity should not exist.

PKIA5890E

Unit

Terminals

Continuity

Connector

Terminal (Wire color)

Headlamp LH

E10

4 (B)

Ground

Yes

Headlamp RH

E40

PKIA5891E