wiring INFINITI QX4 2005 Factory Service Manual

LT-10
HEADLAMP (FOR USA)
Revision: October 20052005 QX56
Wiring Diagram — H/LAMP —EKS00B7W
WKWA2394E

LT-16
HEADLAMP (FOR USA)
Revision: October 20052005 QX56
Refer to LT- 1 0 , "Wiring Diagram — H/LAMP —" .
OK or NG
OK >> GO TO 2.
NG >> If fuse or fusible link is blown, be sure to eliminate cause of malfunction before installing new fuse
or fusible link. Refer to PG-4, "
POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Disconnect BCM connectors.
2. Check voltage between BCM harness connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Check harness for open between BCM and fuse or fus-
ible link.
3. CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
OK or NG
OK >> Inspection End.
NG >> Check ground circuit harness.
IPDM E/R Battery34
35
40
41
53 Unit Power source Fuse and fusible link No.
Terminals Ignition switch position
(+)
(–) OFF ACC ON
ConnectorTe r m i n a l
(Wire color)
M18 38 (W/L)
Ground0V 0VBattery
voltage
M20 70 (W/B)Battery
voltageBattery
voltageBattery
voltage
WKIA1436E
Te r m i n a l s
Continuity
ConnectorTe r m i n a l
(Wire color)
M20 67 (B) Ground Yes
LIIA0915E

LT-32
HEADLAMP (FOR USA)
Revision: October 20052005 QX56
Installation is in the reverse order of removal.
CAUTION:

After installing the bulb, be sure to install the bulb socket securely to ensure watertightness.

Do not touch the glass of bulb directly by hand. Keep grease and other oily substances away from
it. Do not touch bulb by hand while it is lit or right after being turned off. Burning may result.

Do not leave bulb out of headlamp assembly for a long time because dust, moisture, smoke, etc.
may affect the performance of the lamp. When replacing bulb, be sure to replace it with a new one.
Removal and InstallationEKS00B8B
REMOVAL
1. Remove the front bumper. Refer to EI-13, "Removal and Installation" .
2. Disconnect the connector.
3. Remove the 5 headlamp mounting bolts.
INSTALLATION
Installation is in the reverse order of removal.
Disassembly and AssemblyEKS00B8C
WKIA1860E
: 6.0 N·m (0.61 kg-m, 53 in-lb)
WKIA1861E
1. Parking lamp bulb (Outer) 2. Parking lamp bulb (Inner) 3. Headlamp bulb (High beam)
4. Headlamp assembly 5. Xenon bulb (Low beam) 6. Side marker lamp bulb
7. Ballast 8. Wiring harness assembly

HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -
LT-37
C
D
E
F
G
H
I
J
L
MA
B
LT
Revision: October 20052005 QX56
Wiring Diagram — DTRL —EKS00B8H
WKWA2398E

LT-42
HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -
Revision: October 20052005 QX56
How to Proceed With Trouble DiagnosisEKS00B8J
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT-34, "
System Description" .
3. Perform the Preliminary Check. Refer to LT-42, "
Preliminary Check" .
4. Check symptom and repair or replace the cause of malfunction.
5. Does the headlamp operate normally? If YES: GO TO 6. If NO: GO TO 4.
6. Inspection End.
Preliminary CheckEKS00B8K
CHECK BCM CONFIGURATION
1. CHECK BCM CONFIGURATION
Confirm BCM configuration for "DTRL" is set to "WITH". Refer to BCS-14, "
READ CONFIGURATION PROCE-
DURE" .
OK or NG
OK >> Continue preliminary check. Refer to LT- 4 2 , "INSPECTION FOR POWER SUPPLY AND
GROUND CIRCUIT" .
NG >> Change BCM configuration for "DTRL" to "WITH". Refer to BCS-16, "
WRITE CONFIGURATION
PROCEDURE" .
INSPECTION FOR POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSES AND FUSIBLE LINK
Check for blown fuses or fusible link.
Refer to LT- 3 7 , "
Wiring Diagram — DTRL —" .
OK or NG
OK >> GO TO 2.
NG >> If fuse or fusible link is blown, be sure to eliminate cause of malfunction before installing new fuse
or fusible link. Refer to PG-4, "
POWER SUPPLY ROUTING CIRCUIT" .
35 O/B Combination switch output 2
ONLighting, turn, wiper OFF
Wiper dial position 4
36 R/W Combination switch output 1
38 W/L Ignition switch (ON) ON — Battery voltage
39 L CAN-H — — —
40 P CAN-L — — —
67 B Ground ON — 0V
70 W/B Battery power supply (fusible link) OFF — Battery voltage Te r m i n a l
No.Wire
colorSignal nameMeasuring condition
Reference value
(Approx.) Ignition
switchOperation or condition
SKIA5292E
Unit Power source Fuse and fusible link No.
BCMBattery f
Ignition switch ON or START position 59
Daytime light relay Battery 45

LT-50
AUTO LIGHT SYSTEM
Revision: October 20052005 QX56
Wiring Diagram — AUTO/L —EKS00B8W
WKWA1198E

AUTO LIGHT SYSTEM
LT-55
C
D
E
F
G
H
I
J
L
MA
B
LT
Revision: October 20052005 QX56
1 USA
2 Canada
How to Proceed With Trouble DiagnosisEKS00B8Z
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT- 4 8 , "
System Description" .
3. Carry out the Preliminary Check. Refer to LT- 5 5 , "
Preliminary Check" .
4. Check symptom and repair or replace the cause of malfunction. Refer to LT- 6 2 , "
Trouble Diagnosis Chart
by Symptom" .
5. Does the auto light system operate normally? If YES: GO TO 6. If NO: GO TO 4.
6. Inspection End.
Preliminary CheckEKS00B90
SETTING CHANGE FUNCTIONS

Sensitivity of auto light system can be adjusted using CONSULT-II. Refer to LT-58, "WORK SUPPORT" .
CHECK POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSES OR FUSIBLE LINK
Check for blown fuses or fusible link.
Refer to LT- 5 0 , "
Wiring Diagram — AUTO/L —" .
OK or NG
OK >> GO TO 2.
NG >> If fuse or fusible link is blown, be sure to eliminate cause of malfunction before installing new fuse
or fusible link. Refer to PG-4, "
POWER SUPPLY ROUTING CIRCUIT" .
56L/W1
Y2Headlamp high (RH) ONLighting switch
HIGH or PASS
positionOFF 0V
ON Battery voltage
57 R/LParking, license, and tail
lampONLighting switch
1ST positionOFF 0V
ON Battery voltage
59 B Ground ON — 0V Te r m i n a l
No.Wire
colorSignal nameMeasuring condition
Reference value
(Approx.) Ignition
switchOperation or condition
Unit Power source Fuse and fusible link No.
BCMBattery f
Ignition switch ON or START position 59
IPDM E/R Battery34
35
37
40
41
53

LT-66
HEADLAMP AIMING CONTROL
Revision: October 20052005 QX56
Wiring Diagram — H/AIM —EKS00B98
WKWA2487E

FRONT FOG LAMP
LT-71
C
D
E
F
G
H
I
J
L
MA
B
LT
Revision: October 20052005 QX56
Wiring Diagram — F/FOG —EKS00B9E
WKWA2406E

FRONT FOG LAMP
LT-75
C
D
E
F
G
H
I
J
L
MA
B
LT
Revision: October 20052005 QX56
Preliminary CheckEKS00B9I
CHECK POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSES OR FUSIBLE LINK
Check for blown fuses or fusible link.
Refer to LT- 7 1 , "
Wiring Diagram — F/FOG —" .
OK or NG
OK >> GO TO 2.
NG >> If fuse or fusible link is blown, be sure to eliminate cause of malfunction before installing new fuse
or fusible link. Refer to PG-4, "
POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Disconnect BCM connectors.
2. Check voltage between BCM harness connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Check harness for open between BCM and fuse or fus-
ible link.
3. CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
OK or NG
OK >> Inspection End.
NG >> Check ground circuit harness.
Unit Power source Fuse and fusible link No.
BCMBattery f
Ignition switch ON or START position 59
IPDM E/RBattery 53
Battery (Fog lamps ON) 56
Terminals Ignition switch position
(+)
(–) OFF ACC ON
ConnectorTerminal
(Wire color)
M18 38 (W/L)
Ground0V 0VBattery
voltage
M20 70 (W/B)Battery
voltageBattery
voltageBattery
voltage
WKIA1436E
Terminals
Continuity
ConnectorTe r m i n a l
(Wire color)
M20 67 (B) Ground Yes
LIIA0915E