battery INFINITI QX56 2006 Factory Service Manual

LT-152
INTERIOR ROOM LAMP
Revision: November 20092006 QX56
2. ACTIVE TEST
1. Select "BCM" on CONSULT-II. Select "INT LAMP" active test.
2. When switch is in DOOR position, use active test to make sure interior room lamp operates.
OK or NG
OK >> Replace BCM. Refer to BCS-20, "BCM" .
NG >> GO TO 3.
3. CHECK INTERIOR ROOM LAMP INPUT
1. Turn ignition switch OFF.
2. Check voltage between front room/map lamp assembly harness connector R102 terminal 1 and ground.
OK or NG
OK >> GO TO 4.
NG >> GO TO 5.
4. CHECK INTERIOR ROOM LAMP CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM harness connector M20 terminal 63 and front room/map lamp assembly harness connector R102
terminal 1.
OK or NG
OK >> Replace BCM if interior lamp does not work after setting the connector again. Refer to BCS-20, "
BCM" .
NG >> Repair harness or connector.
5. CHECK INTERIOR ROOM LAMP CIRCUIT
1. Disconnect BCM connector and interior room lamp connector.
2. Check continuity between BCM harness connector M20 terminal 56 and front room/map lamp assembly harness connector R102
terminal 6.
OK or NG
OK >> Replace BCM if interior lamp does not work after setting the connector again. Refer to BCS-20, "
BCM" .
NG >> Repair harness or connector between BCM and room/
map lamp.
Room lamps should turn ON.
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1 - Ground
: Battery voltage should exist.
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63 - 1: Continuity should exist.
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56 - 6: Continuity should exist.
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INTERIOR ROOM LAMPLT-153
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Revision: November 2009 2006 QX56
Personal Lamp Control Does Not Operate (Room/Map Lamps Operate)EKS00BBE
1. CHECK EACH DOOR SWITCH
Select "BCM" on CONSULT-II. With "INT LAMP" data monitor, make
sure switches listed in display item list turn ON-OFF linked with
switch operation. Refer to LT- 1 3 6 , "
SWITCH OPERATION" for
switches and their function.
OK or NG
OK >> GO TO 2.
NG >> Inspect malfunctioning door switch.
2. CHECK PERSONAL LAMP OUTPUT
1. Turn ignition switch OFF.
2. Confirm lamp switch is in the DOOR position.
3. Disconnect personal lamp connector.
4. Open any door.
5. Check voltage between personal lamp harness connector termi- nal 3 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3. CHECK PERSONAL LAMP CONTROL CIRCUIT
1. Disconnect front room/map lamp assembly connector.
2. Check continuity between front room/map lamp assembly har- ness connector R102 terminal 2 and personal lamp harness
connector terminal 1.
OK or NG
OK >> Replace personal lamp.
NG >> Repair harness or connector.
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3 - Ground : Battery voltage should exist.
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2 - 1 : Continuity should exist.
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LT-154
INTERIOR ROOM LAMP
Revision: November 20092006 QX56
All Step/Foot/Puddle Lamps Do Not OperateEKS00BBF
1. CHECK EACH DOOR SWITCH
Select "BCM" on CONSULT-II. With "INT LAMP" data monitor, make
sure switches listed in display item list turn ON-OFF linked with
switch operation. Refer to LT- 1 5 1 , "
Display Item List" for switches
and their functions.
OK or NG
OK >> GO TO 2.
NG >> Inspect malfunctioning switch system.
2. CHECK STEP LAMP POWER SUPPLY
1. Turn ignition switch OFF.
2. Check voltage between front step lamp LH harness connector D11 terminal + and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 4.
3. CHECK STEP LAMP CONTROL CIRCUIT
1. Disconnect BCM connector and front step lamp LH connector.
2. Check continuity between BCM harness connector M20 terminal 62 and front step lamp LH harness connector D11 terminal –.
OK or NG
OK >> Replace BCM if front step lamp does not work after set- ting the connector again. Refer to BCS-20, "
BCM" .
NG >> Repair harness or connector.
4. CHECK STEP LAMP CIRCUIT
1. Disconnect BCM connector and front step lamp LH connector.
2. Check continuity between BCM harness connector M20 terminal 56 and front step lamp LH harness connector D11 terminal +.
OK or NG
OK >> Replace BCM if front step lamp does not work after set- ting the connector again. Refer to BCS-20, "
BCM" .
NG >> Repair harness or connector.
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+ - Ground : Battery voltage should exist.
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– - 62 : Continuity should exist.
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+ - 56: Continuity should exist.
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INTERIOR ROOM LAMPLT-155
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Revision: November 2009 2006 QX56
All Interior Room Lamps Do Not OperateEKS00BBG
1. CHECK POWER SUPPLY CIRCUIT
1. All interior room lamp switches are OFF.
2. Turn ignition switch ON.
3. Check voltage between BCM harness connector M20 terminal 56 and ground.
OK or NG
OK >> Repair harness or connector. To prevent making a short circuit, be sure to disconnect battery negative cable
after repairing harness, and then reconnect.
NG >> Replace BCM. Refer to BCS-20, "
BCM" .
Ignition Keyhole Illumination Control Does Not OperateEKS00BBH
1. CHECK EACH SWITCH
Select "BCM" on CONSULT-II. With "INT LAMP" data monitor, make
sure switches listed in display item list turn ON-OFF linked with
switch operation. Refer to LT- 1 5 1 , "
Display Item List" for switches
and their functions.
OK or NG
OK >> GO TO 2.
NG >> Inspect malfunctioning switch system.
2. ACTIVE TEST
1. Select "BCM" on CONSULT-II. Select "INT LAMP".
2. Select "IGN ILLUM" active test to make sure lamp operates.
OK or NG
OK >> Replace BCM. Refer to BCS-20, "BCM" .
NG >> GO TO 3.
3. CHECK IGNITION KEYHOLE ILLUMINATION INPUT
1. Check voltage between ignition keyhole illumination harness connector M150 terminal + and ground.
OK or NG
OK >> GO TO 4.
NG >> GO TO 6. 56 - Ground
: Battery voltage should exist.
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SKIA5930E
Ignition keyhole illumination should turn ON.
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+ - Ground: Battery voltage should exist.
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ILLUMINATIONLT-159
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to front room/map lamp assembly (console box illumination) terminal 8

to AV switch terminal 4

to hazard switch terminal 4

to audio unit terminal 7

to rear sonar system OFF switch terminal 4

to 4WD switch terminal 8 (with 4-wheel drive)

to front air control terminal 24

to rear power vent window switch terminal 6

to DVD player terminal 10 (with DVD entertainment system)

to pedal adjusting switch terminal 6

to A/T device terminal 12

to front heated seat switch LH and RH terminal 6

to VDC OFF switch terminal 4

to tow mode switch terminal 4

to headlamp aiming switch terminal 4

to clock terminal 4 and

to combination meter terminal 18.
Ground is supplied

to illumination control switch terminal 3

to glove box lamp terminal 2

to display control unit terminal 3

to rear heated seat switches terminal 6

to electric brake (pre-wiring) terminal 1 (with trailer tow) and

to compass and thermometer terminal 7

through grounds M57, M61 and M79, and

to NAVI control unit terminal 1

to rear air control terminal 3 and

to rear audio remote control unit terminal 15

through grounds B117 and B132.
With power and ground supplied, illumination lamps illuminate.
EXTERIOR LAMP BATTERY SAVER CONTROL
When the combination switch (lighting switch) is in the 1ST or 2ND position (or if auto light system is acti-
vated), and the ignition switch is turned from ON or ACC to OFF, the battery saver control function is activated.
Under this condition, the illumination lamps remain illuminated for 5 minutes, then the illumination lamps are
turned off.
When the lighting switch is turned from OFF to 1ST or 2ND position (or if auto light system is activated) after
illumination lamps are turned off by the battery saver control, the illumination lamps illuminate again.
Exterior lamp battery saver control mode can be changed by the function setting of CONSULT-II.
CAN Communication System DescriptionEKS00BBK
Refer to LAN-26, "CAN COMMUNICATION" .

MA-6
GENERAL MAINTENANCE
Revision: November 20092006 QX56
UNDER THE HOOD AND VEHICLE
The maintenance items listed here should be checked periodically (e.g. each time you check the engine oil or refuel).Brakes
Check that the brake does not pull the vehicle to one side when applied. —
Brake pedal and
booster Check the pedal for smooth operation and make sure it has the proper distance
under it when depressed fully. Check the brake booster function. Keep the floor
mats away from the pedal. ACC-5, "
ADJUSTABLE
ACCELERATOR
PEDAL",
BR-17, "On-
Vehicle Service"
Parking brake Check that the parking brake control has the proper travel and make sure that
the vehicle is held securely on a fairly steep hill when only the parking brake is
applied. PB-9, "Parking Brake
Control"
Automatic transmis-
sion “Park” mecha-
nismOn a fairly steep hill check that the vehicle is held securely with the selector
lever in the P position without applying the brakes.
—
Item
Reference page
Item Reference page
Windshield washer
fluid Check that there is adequate fluid in the tank.
—
Engine coolant level Check the coolant level when the engine is cold. —
Radiator and hoses Check the front of the radiator and clean off any dirt, insects, leaves, etc., that
may have accumulated. Make sure the hoses have no cracks, deformation,
deterioration or loose connections. —
Brake fluid level Make sure that the brake fluid level is between the “MAX ” and “ MIN” lines on the
reservoirs MA-28
Battery
Check the fluid level in each cell. It should be between the “MAX ” and “MIN ”
lines. Vehicles operated in high temperatures or under severe conditions require
frequent checks of the battery fluid level. —
Engine drive belt Make sure that no belt is frayed, worn, cracked or oily. MA-13
Engine oil levelCheck the level on the dipstick after parking the vehicle on a level spot and turn-
ing off the engine. —
Power steering fluid
level and lines Check the level on the reservoir with the engine off. Check the lines for improper
attachment, leaks, cracks, etc.
MA-29
Automatic transmis-
sion fluid levelCheck the level on the dipstick after putting the selector lever in
“P ” with the
engine idling. MA-22
Exhaust system
Make sure there are no loose supports, cracks or holes. If the sound of the
exhaust seems unusual or there is a smell of exhaust fumes, immediately locate
the trouble and correct it. MA-22
Underbody
The underbody is frequently exposed to corrosive substances such as those
used on icy roads or to control dust. It is very important to remove these sub-
stances, otherwise rust will form on the floor pan, frame, fuel lines and around
the exhaust system. At the end of winter, the underbody should be thoroughly
flushed with plain water, being careful to clean those areas where mud and dirt
can easily accumulate. —
Fluid leaks Check under the vehicle for fuel, oil, water or other fluid leaks after the vehicle
has been parked for a while. Water dripping from the air conditioner after use is
normal. If you should notice any leaks or gasoline fumes are evident, check for
the cause and correct it immediately. —

PG-1
POWER SUPPLY, GROUND & CIRCUIT ELEMENTS
K ELECTRICAL
CONTENTS
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PRECAUTIONS .....................................................
..... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 3
POWER SUPPLY ROUTING CIRCUIT ................. ..... 4
Schematic ........................................................... ..... 4
Wiring Diagram — POWER — ................................. 6 BATTERY POWER SUPPLY — IGNITION SW.
IN ANY POSITION ................................................ 6
ACCESSORY POWER SUPPLY — IGNITION
SW. IN ACC OR ON ............................................. 11
IGNITION POWER SUPPLY — IGNITION SW.
IN ON ............................................................... ... 12
IGNITION POWER SUPPLY — IGNITION SW.
IN ON AND/OR START .................................... ... 13
Fuse .................................................................... ... 17
Fusible Link ......................................................... ... 17
Circuit Breaker (Built Into BCM) .......................... ... 17
IPDM E/R (INTELLIGENT POWER DISTRIBUTION
MODULE ENGINE ROOM) ................................... ... 18
System Description ............................................. ... 18
SYSTEMS CONTROLLED BY IPDM E/R ........ ... 18
CAN COMMUNICATION LINE CONTROL ...... ... 18
IPDM E/R STATUS CONTROL ........................ ... 19
CAN Communication System Description ........... ... 19
Function of Detecting Ignition Relay Malfunction ... 19
CONSULT-II Function IPDM E/R ......................... ... 20
CONSULT-II BASIC OPERATION ................... ... 20
SELF-DIAGNOSTIC RESULTS ....................... ... 21
DATA MONITOR .............................................. ... 21
ACTIVE TEST .................................................. ... 23
Auto Active Test .................................................. ... 24
DESCRIPTION ................................................. ... 24
OPERATION PROCEDURE ............................ ... 24
INSPECTION IN AUTO ACTIVE TEST MODE ... 24
Schematic ........................................................... ... 26
IPDM E/R Terminal Arrangement ........................ ... 27
IPDM E/R Power/Ground Circuit Inspection ....... ... 28Inspection with CONSULT-II (Self-Diagnosis) .....
... 29
Removal and Installation of IPDM E/R ................ ... 30
REMOVAL ........................................................ ... 30
INSTALLATION ................................................ ... 30
GROUND CIRCUIT ................................................ ... 31
Ground Distribution ................................................. 31 MAIN HARNESS ................................................. 31
ENGINE ROOM HARNESS ............................. ... 34
ENGINE CONTROL HARNESS ....................... ... 37
BODY HARNESS ............................................. ... 38
BODY NO. 2 HARNESS .................................. ... 39
BACK DOOR NO. 2 RH HARNESS ................. ... 40
HARNESS .............................................................. ... 41
Harness Layout ...................................................... 41 HOW TO READ HARNESS LAYOUT .............. ... 41
OUTLINE .......................................................... ... 42
MAIN HARNESS ................................................. 43
ENGINE ROOM HARNESS (LH VIEW) ........... ... 45
ENGINE ROOM HARNESS (RH VIEW) .......... ... 48
ENGINE CONTROL HARNESS ....................... ... 50
CHASSIS HARNESS ....................................... ... 52
BODY HARNESS ............................................. ... 54
BODY NO. 2 HARNESS .................................. ... 56
ROOM LAMP HARNESS ................................. ... 58
FRONT DOOR LH HARNESS ......................... ... 59
FRONT DOOR RH HARNESS ......................... ... 59
REAR DOOR LH HARNESS ............................ ... 60
REAR DOOR RH HARNESS ........................... ... 60
BACK DOOR HARNESS ................................. ... 61
Wiring Diagram Codes (Cell Codes) ................... ... 62
ELECTRICAL UNITS LOCATION ......................... ... 65
Electrical Units Location ...................................... ... 65
ENGINE COMPARTMENT ............................... ... 65
PASSENGER COMPARTMENT ...................... ... 66
HARNESS CONNECTOR ...................................... ... 68
Description ........................................................... ... 68
HARNESS CONNECTOR (TAB-LOCKING
TYPE) ............................................................... ... 68
HARNESS CONNECTOR (SLIDE-LOCKING

PG-6
POWER SUPPLY ROUTING CIRCUIT
Revision: November 20092006 QX56
Wiring Diagram — POWER —EKS00BN1
BATTERY POWER SUPPLY — IGNITION SW. IN ANY POSITION
WKWA3820E

PG-28
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: November 20092006 QX56
IPDM E/R Power/Ground Circuit InspectionEKS00BN9
1. FUSE AND FUSIBLE LINK INSPECTION
Check that the following fusible links or IPDM E/R fuses are not blown.
OK or NG
OK >> GO TO 2.
NG >> Replace fuse or fusible link.
2. POWER CIRCUIT INSPECTION
1. Disconnect IPDM E/R harness connector E118.
2. Check voltage between IPDM E/R harness connector E118 terminals 1, 2 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace IPDM E/R power circuit harness.
3. GROUND CIRCUIT INSPECTION
1. Disconnect IPDM E/R harness connectors E122 and E124.
2. Check continuity between IPDM E/R harness connector E122 terminal 38, and E124 terminal 59 and ground.
OK or NG
OK >> Inspection End.
NG >> Repair or replace IPDM E/R ground circuit harness.
Terminal No. Signal nameFuse, fusible link No.
1, 2 Battery power a, c, d
Battery voltage should exist.
SKIA1987E
Continuity should exist.
WKIA1453E

PG-30
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
Revision: November 20092006 QX56
Removal and Installation of IPDM E/REKS00BNB
REMOVAL
1. Disconnect negative battery cable.
2. Remove IPDM E/R upper cover.
3. Release 2 clips and pull IPDM E/R up from case.
4. Disconnect IPDM E/R connectors and remove the IPDM E/R.
INSTALLATION
Installation is in the reverse order of removal.
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