2005 INFINITI QX4 Factory Service Manual

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Page 2441 of 3419

INFINITI QX4 2005 Factory Service Manual LAN-162
[CAN]
CAN SYSTEM (TYPE 4)
Revision: October 20052005 QX56
Driver Seat Control Unit Circuit CheckUKS001NZ
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the negative battery term

Page 2442 of 3419

INFINITI QX4 2005 Factory Service Manual CAN SYSTEM (TYPE 4)
LAN-163
[CAN]
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LAN
Revision: October 20052005 QX56
Display Control Unit Circuit CheckUKS001O1
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect th

Page 2443 of 3419

INFINITI QX4 2005 Factory Service Manual LAN-164
[CAN]
CAN SYSTEM (TYPE 4)
Revision: October 20052005 QX56
Data Link Connector Circuit CheckUKS001O3
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the negative battery terminal.

Page 2444 of 3419

INFINITI QX4 2005 Factory Service Manual CAN SYSTEM (TYPE 4)
LAN-165
[CAN]
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LAN
Revision: October 20052005 QX56
Front Air Control Circuit CheckUKS001O5
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the n

Page 2445 of 3419

INFINITI QX4 2005 Factory Service Manual LAN-166
[CAN]
CAN SYSTEM (TYPE 4)
Revision: October 20052005 QX56
ABS Actuator and Electric Unit (Control Unit) Circuit CheckUKS001O7
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the

Page 2446 of 3419

INFINITI QX4 2005 Factory Service Manual CAN SYSTEM (TYPE 4)
LAN-167
[CAN]
C
D
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F
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LAN
Revision: October 20052005 QX56
CAN Communication Circuit CheckUKS001O9
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the n

Page 2447 of 3419

INFINITI QX4 2005 Factory Service Manual LAN-168
[CAN]
CAN SYSTEM (TYPE 4)
Revision: October 20052005 QX56
Ignition power supply circuit. Refer to PG-13, "IGNITION POWER SUPPLY — IGNITION SW. IN ON
AND/OR START" .
Component InspectionUKS0

Page 2448 of 3419

INFINITI QX4 2005 Factory Service Manual LT-1
LIGHTING SYSTEM
K ELECTRICAL
CONTENTS
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SECTION LT
A
B
LT
Revision: October 20052005 QX56 PRECAUTIONS .......................................................... 4
Precautions f

LT-1
LIGHTING SYSTEM
K ELECTRICAL
CONTENTS
C
D
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SECTION LT
A
B
LT
Revision: October 20052005 QX56 PRECAUTIONS .......................................................... 4
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 4
General precautions for service operations ............. 4
Wiring Diagrams and Trouble Diagnosis .................. 4
HEADLAMP (FOR USA) ............................................ 6
Component Parts and Harness Connector Location ..... 6
System Description .................................................. 6
OUTLINE ............................................................... 6
XENON HEADLAMP ............................................. 7
BATTERY SAVER CONTROL .............................. 8
AUTO LIGHT OPERATION ................................... 8
VEHICLE SECURITY SYSTEM (PANIC ALARM) ..... 8
CAN Communication System Description ................ 8
Schematic ................................................................ 9
Wiring Diagram — H/LAMP — ............................... 10
Terminals and Reference Values for BCM ............. 14
Terminals and Reference Values for IPDM E/R ..... 15
How to Proceed With Trouble Diagnosis ................ 15
Preliminary Check .................................................. 15
CHECK POWER SUPPLY AND GROUND CIR-
CUIT .................................................................... 15
CONSULT-II Function (BCM) ................................. 17
CONSULT-II OPERATION .................................. 17
WORK SUPPORT ............................................... 18
DATA MONITOR ................................................. 18
ACTIVE TEST ..................................................... 19
SELF-DIAGNOSTIC RESULTS .......................... 19
CONSULT-II Function (IPDM E/R) ......................... 20
CONSULT-II OPERATION .................................. 20
DATA MONITOR ................................................. 21
ACTIVE TEST ..................................................... 21
Headlamp HI Does Not Illuminate (Both Sides) ..... 22
Headlamp HI Does Not Illuminate (One Side) ....... 24
High Beam Indicator Lamp Does Not Illuminate .... 25
Headlamp LO Does Not Illuminate (Both Sides) .... 25
Headlamp LO Does Not Illuminate (One Side) ...... 27
Headlamps Do Not Turn OFF ................................ 28
Aiming Adjustment ................................................. 30LOW BEAM AND HIGH BEAM ........................... 30
Bulb Replacement .................................................. 31
HEADLAMP (OUTER SIDE), FOR LOW BEAM ... 31
HEADLAMP (INNER SIDE), FOR HIGH BEAM ... 31
FRONT PARKING LAMP (INNER OR OUTER) ... 31
FRONT SIDE MARKER LAMP ........................... 31
Removal and Installation ........................................ 32
REMOVAL ........................................................... 32
INSTALLATION ................................................... 32
Disassembly and Assembly .................................... 32
HEADLAMP (FOR CANADA) - DAYTIME LIGHT
SYSTEM - .................................................................. 33
Component Parts and Harness Connector Location ... 33
System Description ................................................. 34
OUTLINE ............................................................. 34
DAYTIME LIGHT OPERATION ........................... 34
COMBINATION SWITCH READING FUNCTION ... 34
AUTO LIGHT OPERATION ................................. 35
CAN Communication System Description .............. 35
Schematic ............................................................... 36
Wiring Diagram — DTRL — ................................... 37
Terminals and Reference Values for BCM .............. 41
How to Proceed With Trouble Diagnosis ................ 42
Preliminary Check .................................................. 42
CHECK BCM CONFIGURATION ........................ 42
INSPECTION FOR POWER SUPPLY AND
GROUND CIRCUIT ............................................. 42
INSPECTION PARKING BRAKE SWITCH CIR-
CUIT .................................................................... 43
CONSULT-II Functions ........................................... 44
Daytime Light Control Does Not Operate Properly
(Normal Headlamps Operate Properly) .................. 44
Aiming Adjustment .................................................. 46
Bulb Replacement .................................................. 46
Removal and Installation ........................................ 46
Disassembly and Assembly .................................... 46
AUTO LIGHT SYSTEM ............................................. 47
Component Parts and Harness Connector Location ... 47
System Description ................................................. 48
OUTLINE ............................................................. 48

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