battery INFINITI QX56 2007 Factory Service Manual

LT-90
< SERVICE INFORMATION >
PARKING, LICENSE PLATE AND TAIL LAMPS
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5.CHECK PARKING, LICENSE PLATE AND TAIL LAMP CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Check continuity between IPDM E/R harness connector and
front combination lamp harness connector.
4. Check continuity between IPDM E/R connector E124 (A) and
license plate lamps connector D703 (B).
5. Check continuity between IPDM E/R harness connector and
rear combination lamp harness connector.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-28, "Removal and
Installation of IPDM E/R" .
NG >> Repair harness or connector.
6.CHECK GROUND
Rear combination lamp (+)
(–) Voltage
Connector Terminal
RH B130
3 Ground Battery voltage
LH B70
WKIA1901E
IPDM E/R Front combination lamp
Continuity
Connector Terminal Connector Terminal
E124 57RH E107
3Yes
LH E11
WKIA1902E
IPDM E/R License plate lamps
Continuity
Connector Terminal Connector Terminal
A: E124 57 B: D703 1 Yes
WKIA4614E
IPDM E/R Rear combination lamp
Continuity
Connector Terminal Connector Terminal
E124 57RH B130
3 Yes
LH B70
WKIA1903E

LT-94
< SERVICE INFORMATION >
TRAILER TOW
TRAILER TOW
Component Parts and Harness Connector LocationINFOID:0000000003533451
System DescriptionINFOID:0000000003533452
Power is supplied at all times
• to ignition relay, located in the IPDM E/R (intelligent power distribution module engine room),
• through 50A fusible link (letter f , located in the fuse and fusible link box)
• to BCM (body control module) terminal 70,
• through 10A fuse (No. 32, located in the IPDM E/R)
• through IPDM E/R terminal 61
1. Fuse and fusible link box 2. IPDM E/R fuse layout 3. Fuse and relay box
4. IPDM E/R E118, E119, E120, E121,
E122, E123, E1245. A. Steering column
B. Data link connector M22
C. BCM M18, M19, M20
(view with instrument lower panel LH
removed)6. A. Trailer turn relay LH E156
B. Battery
C. Trailer tow relay 2 E140
D. Trailer turn relay RH E157
7. A. Trailer tow relay 1 M51
B. Electric brake (pre-wiring) M76
(view with instrument lower panel LH
removed)8. Trailer connector C2 9. Combination switch (lighting switch)
M28
WKIA4616E

INTERIOR ROOM LAMP
LT-103
< SERVICE INFORMATION >
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• through grounds M57, M61 and M79.
When a signal, or combination of signals is received by BCM, ground is supplied
• through BCM terminal 63
• to door mirror LH and RH terminal 13
• to front room/map lamp assembly terminal 1
• through front room/map lamp assembly terminal 2
• to personal lamps terminal 1, and
• through BCM terminal 49
• to cargo lamp terminal 1.
With power and ground supplied, the lamps illuminate.
SWITCH OPERATION
When any door switch is ON (door is opened), ground is supplied
• to front and rear step lamps LH and RH and foot lamp LH and RH terminal –
• through BCM terminal 62.
And power is supplied
• through BCM terminal 56
• to front and rear step lamps LH and RH terminal +
• to ignition keyhole illumination terminal +
• to door mirror LH and RH terminal 12
• to front room/map lamp assembly terminal 6
• to vanity lamp LH and RH terminal 1
• to personal lamp 2nd row and 3rd row terminal 3
• to cargo lamp terminal 2, and
• to foot lamp LH and RH terminal +.
When map lamp switch is ON, ground is supplied
• to front room/map lamp assembly terminal 5
• through grounds M57, M61 and M79.
When vanity lamp (LH and RH) is ON, ground is supplied
• to vanity lamp (LH and RH) terminal 2
• through grounds M57, M61 and M79.
When cargo lamp is ON, ground is supplied through cargo lamp case ground.
ROOM LAMP TIMER OPERATION
When lamp switch is in DOOR position and all conditions below are met, BCM performs timer control (maxi-
mum 30 seconds) for interior room lamp and map lamp ON/OFF.
Power is supplied
• through 10A fuse [No. 19, located in the fuse block (J/B)]
• to key switch and key lock solenoid terminal 3.
Key is removed from ignition key cylinder (key switch OFF), power will not be supplied to BCM terminal 37.
Serial data is supplied
• to BCM terminal 22
• through main power window and door lock/unlock switch terminal 14.
At the time that front door LH is opened, BCM detects that front door LH is unlocked. It determines that interior
room lamp and map lamp timer operation conditions are met, and turns the interior room lamps ON for 30 sec-
onds.
Key is in ignition key cylinder (key switch ON), power is supplied
• through key switch and key lock solenoid terminal 4
• to BCM terminal 37.
When key is removed from key switch and key lock solenoid (key switch OFF), power supply to BCM terminal
37 is terminated. BCM detects that key has been removed, determines that interior room lamp and map lamp
timer conditions are met, and turns the interior room lamps ON for 30 seconds.
When front door LH opens → closes, and the key is not inserted in the key switch and key lock solenoid (key
switch OFF), BCM terminal 47 changes between 0V (door open) → 12V (door closed). The BCM determines
that conditions for interior room lamp operation are met and turns the interior room lamp ON for 30 seconds.
Timer control is canceled under the following conditions.
• Front door LH is locked [when locked by keyfob, main power window and door lock/unlock switch, or front
door lock assembly LH (key cylinder switch)]
• Front door LH is opened (front door switch LH turns ON)
• Ignition switch ON.
INTERIOR LAMP BATTERY SAVER CONTROL

LT-104
< SERVICE INFORMATION >
INTERIOR ROOM LAMP
If interior lamp is left “ON”, it will not be turned off even when door is closed.
BCM turns off interior lamp automatically to save battery 30 minutes after ignition switch is turned off.
BCM controls interior lamps listed below:
• Vanity lamp
• Room/map lamp
• Cargo lamp
• Personal lamp
• Step lamps
• Puddle lamps
• Foot lamps
• Ignition keyhole illumination
After lamps turn OFF by the battery saver system, the lamps illuminate again when
• signal received from keyfob, or main power window and door lock/unlock switch or front door lock assembly
LH (key cylinder switch) is locked or unlocked
• door is opened or closed
• key is removed from ignition key cylinder (key switch OFF) or inserted in ignition key cylinder (key switch
ON).
Interior lamp battery saver control period can be changed by the function setting of CONSULT-II.

INTERIOR ROOM LAMP
LT-115
< SERVICE INFORMATION >
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ACTIVE TEST
Display Item List
Room/Map Lamp Control Does Not OperateINFOID:0000000003533463
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-114, "
CONSULT-II Function (BCM)" 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" 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-24, "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
CDL UNLOCK SW "ON/OFF"Displays "Door unlocked (OFF)" status, determined from locking detection switch in front
door RH.
KEYLESS LOCK "ON/OFF" Displays "Locked (ON)/Other (OFF)" status, determined from lock signal.
KEYLESS UNLOCK "ON/OFF" Displays "Unlocked (ON)/Other (OFF)" status, determined from unlock signal.Monitor item Contents
Test item Description
INT LAMP Interior room lamp can be operated by any ON-OFF operations.
IGN ILLUM Ignition keyhole illumination can be operated by ON-OFF operation.
SKIA5930E
Room lamps should turn ON.
LKIA0092E
1 - Ground : Battery voltage should exist.
WKIA1479E

LT-116
< SERVICE INFORMATION >
INTERIOR ROOM LAMP
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-24, "
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-24, "
BCM" .
NG >> Repair harness or connector between BCM and room/
map lamp.
Personal Lamp Control Does Not Operate (Room/Map Lamps Operate)INFOID:0000000003533464
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-101, "
System Description" 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 CIRCUIT63 - 1 : Continuity should exist.
WKIA1480E
56 - 6 : Continuity should exist.
WKIA1481E
SKIA5930E
3 - Ground : Battery voltage should exist.
WKIA1482E

INTERIOR ROOM LAMP
LT-117
< SERVICE INFORMATION >
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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.
All Step/Foot/Puddle Lamps Do Not OperateINFOID:0000000003533465
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-114, "
CONSULT-II Function (BCM)" 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-24, "
BCM" .
NG >> Repair harness or connector.
4.CHECK STEP LAMP CIRCUIT2 - 1 : Continuity should exist.
WKIA1908E
SKIA5930E
+ - Ground : Battery voltage should exist.
LKIA0306E
– - 62 : Continuity should exist.
WKIA1484E

LT-118
< SERVICE INFORMATION >
INTERIOR ROOM LAMP
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-24, "
BCM" .
NG >> Repair harness or connector.
All Interior Room Lamps Do Not OperateINFOID:0000000003533466
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-24, "
BCM" .
Ignition Keyhole Illumination Control Does Not OperateINFOID:0000000003533467
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-114, "
CONSULT-II Function (BCM)" 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-24, "BCM".
NG >> GO TO 3.
3.CHECK IGNITION KEYHOLE ILLUMINATION INPUT+ - 56 : Continuity should exist.
WKIA1485E
56 - Ground : Battery voltage should exist.
WKIA1486E
SKIA5930E
Ignition keyhole illumination should turn ON.
SKIA3992E

INTERIOR ROOM LAMP
LT-119
< SERVICE INFORMATION >
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1. Check voltage between ignition keyhole illumination harness
connector M150 terminal + and ground.
OK or NG
OK >> GO TO 4.
NG >> GO TO 6.
4.CHECK IGNITION KEYHOLE ILLUMINATION BULB
1. Turn ignition switch OFF.
2. Disconnect ignition keyhole illumination connector.
3. Check continuity between ignition keyhole illumination terminals
+ and –.
OK or NG
OK >> GO TO 5.
NG >> Replace ignition keyhole illumination.
5.CHECK IGNITION KEYHOLE ILLUMINATION CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM harness connector M18 terminal
1 and ignition keyhole illumination harness connector M150 ter-
minal –.
OK or NG
OK >> Replace BCM if ignition keyhole illumination does not
work after setting the connector again. Refer to BCS-24,
"BCM" .
NG >> Repair harness or connector.
6.CHECK IGNITION KEYHOLE ILLUMINATION CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector and keyhole illumination connector.
3. Check continuity between BCM harness connector M20 terminal
56 and ignition keyhole illumination harness connector M150
terminal +.
OK or NG
OK >> Replace BCM if ignition keyhole illumination does not
work after setting the connector again. Refer to BCS-24,
"BCM" .
NG >> Repair harness or connector.+ - Ground : Battery voltage should exist.
WKIA1909E
+ - – : Continuity should exist.
WKIA3556E
– - 1 : Continuity should exist.
WKIA1911E
+ - 56 : Continuity should exist.
WKIA1912E

LT-122
< SERVICE INFORMATION >
ILLUMINATION
• 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 door mirror remote control switch terminal 15
• to display control unit terminal 3
• to rear heated seat switches terminal 6
• to electric brake (pre-wiring) terminal 1 (with trailer tow)
• to combination meter terminal 17
• through grounds M57, M61 and M79, and
• to NAVI control unit terminal 1
• to rear air control terminal 3
• 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 DescriptionINFOID:0000000003533470
Refer to LAN-4, "CAN Communication System" .