2007 INFINITI QX56 ignition

TERMINOLOGY
GI-51
< SERVICE INFORMATION >
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Exhaust gas recirculation control-BPT
valveEGRC-BPT valve BPT valve
Exhaust gas recirculation control-solenoid
valveEGRC-solenoid valve EGR control solenoid valve
Exhaust gas recirculation temperature sen-
sor
EGRT sensor Exhaust gas temperature sensor
EGR temperature sensor
Flash electrically erasable programmable
read only memoryFEEPROM ***
Flash erasable programmable read only
memoryFEPROM ***
Flexible fuel sensor FFS ***
Flexible fuel system FF system ***
Fuel pressure regulator *** Pressure regulator
Fuel pressure regulator control solenoid
valve*** PRVR control solenoid valve
Fuel trim FT ***
Heated Oxygen sensor HO2S Exhaust gas sensor
Idle air control system IAC system Idle speed control
Idle air control valve-air regulator IACV-air regulator Air regulator
Idle air control valve-auxiliary air control
valveIACV-AAC valve Auxiliary air control (AAC) valve
Idle air control valve-FICD solenoid valve IACV-FICD solenoid valve FICD solenoid valve
Idle air control valve-idle up control sole-
noid valveIACV-idle up control solenoid valve Idle up control solenoid valve
Idle speed control-FI pot ISC-FI pot FI pot
Idle speed control system ISC system ***
Ignition control IC ***
Ignition control module ICM ***
Indirect fuel injection system IFI system ***
Intake air IA Air
Intake air temperature sensor IAT sensor Air temperature sensor
Knock *** Detonation
Knock sensor KS Detonation sensor
Malfunction indicator lamp MIL Check engine light
Manifold absolute pressure MAP ***
Manifold absolute pressure sensor MAPS ***
Manifold differential pressure MDP ***
Manifold differential pressure sensor MDPS ***
Manifold surface temperature MST ***
Manifold surface temperature sensor MSTS ***
Manifold vacuum zone MVZ ***
Manifold vacuum zone sensor MVZS ***
Mass air flow sensor MAFS Air flow meter
Mixture control solenoid valve MC solenoid valve Air-fuel ratio control solenoid valve
Multiport fuel injection System MFI system Fuel injection controlNEW TERMNEW ACRONYM /
ABBREVIATIONOLD TERM

POWER WINDOW SYSTEM
GW-15
< SERVICE INFORMATION >
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POWER WINDOW SYSTEM
Component Parts and Harness Connector LocationINFOID:0000000003533024
System DescriptionINFOID:0000000003533025
Power is supplied at all time
• from 50A fusible link (letter f, located in the fuse and fusible link box)
• to BCM terminal 70
• through BCM terminal 69
• to main power window and door lock/unlock switch terminal 19
• to power window and door lock/unlock switch RH terminal 10.
With ignition switch in ON or START position, power is supplied
• through 10A fuse (No. 59, located in the fuse and relay box)
• to BCM terminal 38
• through BCM terminal 68
• to main power window and door lock/unlock switch terminal 10.
• to rear power vent window relays (OPEN and CLOSE) terminal 1.
With ignition switch in ON or START position, ground is supplied
• to BCM terminal 67
1. A. Steering column
B. BCM M18, M19, M20 (view with
instrument panel removed)2. A. Main power window and door
lock/unlock switch D7, D8
Power window and door lock/unlock
switch RH D105
B. Front door switch LH B8, RH B108
C. Front power window motor LH D9,
RH D104
D. Front door lock actuator LH (key
cylinder switch) D143. A. Rear power window switch LH
D203, RH D303
B. Rear power window motor LH
D204, RH D304
4. A. Rear power vent window relay
(CLOSE) M89
B. Rear power vent window relay
(OPEN) M875. Rear power vent window switch
R1036. A. Rear power vent window motor
LH B52, RH B150
B. Condenser-3 B119
Condenser-4 B120
LIIA2715E

GW-18
< SERVICE INFORMATION >
POWER WINDOW SYSTEM
The signal is transmitted from main power window and door lock/unlock switch to power window and door
lock/unlock switch RH
• Front door window RH operation signal.
• Power window control by front door lock assembly LH (key cylinder switch) signal.
• Power window lock signal.
• Retained power operation signal.
• Rear power window operation.
POWER WINDOW LOCK
The power window lock is designed to lock operation of all windows except for front door window LH.
When in the lock position, the power window lock signal is transmitted to power window and door lock/unlock
switch RH by power window serial link. This prevents the power window motor from operating.
RETAINED POWER OPERATION
When the ignition switch is turned to the OFF position from ON or START position, power is supplied for 45
seconds
• to main power window and door lock/unlock switch terminal 10
• from BCM terminal 68.
When power and ground are supplied, the BCM continues to be energized, and the power window can be
operated.
The retained power operation is canceled when the front LH or front RH door is opened.
Retained power operation period can be changed by CONSULT-II. Refer to GW-31, "
CONSULT-II Function
(BCM)" .
ANTI-PINCH SYSTEM
Main power window and door lock/unlock switch, power window and door lock/unlock switch RH and rear
power window control unit LH and RH monitors the power window motor operation and the power window
position (full closed or other) for each power window by the signals from encoder and limit switch in power win-
dow motor.
When a window switch detects interruption during the following close operation,
• automatic close operation when ignition switch is in the ON position
• automatic close operation during retained power operation
Main power window and door lock/unlock switch, power window and door lock/unlock switch RH and rear
power window control unit LH and RH controls each power window motor for open and the power window will
be lowered about 150 mm (5.91 in).
POWER WINDOW CONTROL BY THE FRONT DOOR LOCK ASSEMBLY LH (KEY CYLINDER
SWITCH)
When ignition key switch is OFF, front power window LH and RH can be opened or closed by turning the front
door lock assembly LH (key cylinder switch) to the UNLOCK/LOCK position for more than 1 second.
• Front power windows can be opened as the front door lock assembly LH (key cylinder switch) is kept fully
turned to the UNLOCK position.
• Front power windows can be closed as the front door lock assembly LH (key cylinder switch) is kept fully
turned to the LOCK position.
• While performing open/close operation for the windows, power window is stopped when the front door lock
assembly LH (key cylinder switch) is placed in the NEUTRAL position.
• When the ignition switch is turned ON while the power window opening operation is performed, the power
window opening stops.
CAN Communication System DescriptionINFOID:0000000003533026
Refer to LAN-4.

POWER WINDOW SYSTEM
GW-29
< SERVICE INFORMATION >
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outINFOID:0000000003533029
Terminal and Reference Value for Main Power Window and Door Lock/Unlock Switch
INFOID:0000000003533030
LIIA2455E
Terminal Wire Color Item ConditionVoltage (V)
(Approx.)
2 W/B Limit switch and encoder ground — 0
4LFront door key cylinder switch LH
lock signalKey position
(Neutral → Unlocked)5 → 0
6RFront door key cylinder LH switch
unlock signalKey position
(Neutral → Locked)5 → 0
8G/RFront power window motor LH UP
signalWhen power window motor is op-
erated UP Battery voltage
9 O Limit switch signalFront power window LH is be-
tween fully-open and just before
fully-closed position (ON)0
Front power window LH is be-
tween just before fully-closed po-
sition and fully-closed position
(OFF)5
10 W/L RAP signalWhen ignition switch ON Battery voltage
Within 45 seconds after ignition
switch is turned to OFFBattery voltage
More than 45 seconds after igni-
tion switch is turned to OFF0
When front door LH or RH open
or power window timer operates0
11 G / WFront power window motor LH
DOWN signalWhen power window motor is op-
erated DOWN Battery voltage
13 G/Y Encoder pulse signalWhen power window motor oper-
ates
14 LG/W Power window serial linkWhen ignition switch ON or power
window timer operates
OCC3383D
PIIA2344J

GW-30
< SERVICE INFORMATION >
POWER WINDOW SYSTEM
Power Window and Door Lock/Unlock Switch RH Harness Connector Terminal Layout
INFOID:0000000003533031
Terminal and Reference Value for Power Window and Door Lock/Unlock Switch RH
INFOID:0000000003533032
15 BR Encoder power supplyWhen ignition switch ON or power
window timer operates10
17 B Ground — 0
19 W/R Battery power supply — Battery voltage Terminal Wire Color Item ConditionVoltage (V)
(Approx.)
LIIA2454E
Terminal Wire Color Item ConditionVoltage (V)
(Approx.)
3 W/B Limit switch and encoder ground — 0
4 G/R Encoder power supplyWhen ignition switch ON or power
window timer operates10
8LFront power window motor RH UP
signalWhen power window motor is op-
erated UP Battery voltage
9GFront power window motor RH
DOWN signalWhen power window motor is op-
erated DOWN Battery voltage
10 W/R Battery power supply — Battery voltage
11 B G r o u n d — 0
12 G/Y Encoder pulse signalWhen power window motor oper-
ates
OCC3383D

POWER WINDOW SYSTEM
GW-31
< SERVICE INFORMATION >
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Terminal and Reference Value for BCMINFOID:0000000003533033
Refer to BCS-11, "Terminal and Reference Value for BCM".
Work FlowINFOID:0000000003533034
1. Check the symptom and customer's requests.
2. Understand the outline of system. Refer to GW-15, "
System Description".
3. According to the trouble diagnosis chart, repair or replace the cause of the malfunction.
Refer to GW-32, "
Trouble Diagnosis Symptom Chart".
4. Does power window system operate normally? Yes, GO TO 5, If No, GO TO 3.
5. Inspection End.
CONSULT-II Function (BCM)INFOID:0000000003533035
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II START PROCEDURE
Refer to GI-36, "CONSULT-II Start Procedure".
ACTIVE TEST
15 G/W Limit switch signalRear power window RH is be-
tween fully-open and just before
fully-closed position (ON)0
Rear power window RH is be-
tween just before fully-closed po-
sition and fully-closed position
(OFF)5
16 LG/W Power window serial linkWhen ignition switch is ON or
power window timer operating Terminal Wire Color Item ConditionVoltage (V)
(Approx.)
PIIA2344J
BCM diagnostic
test itemDiagnostic mode Content
Inspection by partWORK SUPPORTSupports inspections and adjustments. Commands are transmitted to the BCM for
setting the status suitable for required operation, input/output signals are received
from the BCM and received data is displayed.
DATA MONITOR Displays BCM input/output data in real time.
ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
SELF-DIAG RESULTS Displays BCM self-diagnosis results.
CAN DIAG SUPPORT MNTR The results of transmit/receive diagnosis of CAN communication can be read.
ECU PART NUMBER BCM part number can be read.
CONFIGURATION Performs BCM configuration read/write functions.

GW-32
< SERVICE INFORMATION >
POWER WINDOW SYSTEM
WORK SUPPORT
DATA MONITOR
Trouble Diagnosis Symptom ChartINFOID:0000000003533036
• Check that other systems using the signal of the following systems operate normally.
Te s t I t e m D e s c r i p t i o n
RETAINED PWRThis test is able to supply RAP signal (power) from BCM (body control module) to power window
system and power sunroof system (if equipped). Those systems can be operated when turning on
“RETAINED PWR” on CONSULT-II screen even if the ignition switch is turned OFF.
NOTE:
During this test, CONSULT-II can be operated with ignition switch in OFF position. “RETAINED
P W R ” s h o u l d b e t u r n e d “ O N ” o r “ O F F ” o n C O N S U LT- I I s c r e e n w h e n i g n i t i o n s w i t c h i s O N . T h e n t u r n
ignition switch OFF to check retained power operation. CONSULT-II might be stuck if “RETAINED
PWR” is turned “ON” or “OFF” on CONSULT-II screen when ignition switch is OFF.
Work item Description
RETAINED PWRRAP signal’s power supply period can be changed by mode setting. Selects RAP signal’s power
supply period between three steps
• MODE1 (45 sec.) / MODE2 (OFF) / MODE 3 (2 min.).
Work item Description
IGN ON SW Indicates (ON/OFF) condition of ignition switch
DOOR SW-DR Indicates (ON/OFF) condition of front door switch driver side
DOOR SW-AS Indicates (ON/OFF) condition of front door switch passenger side
Symptom Repair order Refer to page
None of the power windows can be operated using any switch1. BCM power supply and ground circuit checkBCS-15
2. Main power window and door lock/unlock
power supply and ground circuit checkGW-34
3. Power window serial link check front LH and
RHGW-46
Front power window LH alone does not operate1. Main power window and door lock/unlock
power supply and ground circuit checkGW-342. Front power window motor LH circuit checkGW-36
3. Replace main power window and door lock/
unlock switchEI-31
Front power window RH alone does not operate1. Power window and door lock/unlock switch
RH power supply and ground circuit checkGW-352. Power window serial link check front LH and
RHGW-46
3. Front power window motor RH circuit checkGW-37
4. Replace BCMBCS-24
Rear power window LH alone does not operate1. Rear power window control unit LH or RH
power supply and ground circuit checkGW-48
2. Rear power window switch LH or RH power
supply and ground circuit checkGW-49
3. Rear power window motor LH circuit checkGW-50
4. Power window serial link check rear LH and
RHGW-54
5. Replace BCMBCS-24

GW-34
< SERVICE INFORMATION >
POWER WINDOW SYSTEM
BCM Power Supply and Ground Circuit Inspection
INFOID:0000000003533037
Refer to BCS-15, "BCM Power Supply and Ground Circuit Inspection".
Main Power Window and Door Lock/Unlock Switch Power Supply and Ground Circuit
Inspection
INFOID:0000000003533038
1.CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between main power window and door lock/
unlock switch connector D7 terminal 10, D8 terminal 19 and
ground.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2.CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect main power window and door lock/unlock switch.
3. Check continuity between main power window and door lock/
unlock switch connector D8 terminal 17 and ground.
OK or NG
OK >> Power supply and ground circuit are OK.
NG >> Repair or replace harness.
3.CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM and main power window and door lock/unlock
switch.
3. Check continuity between BCM connector and main power win-
dow and door lock/unlock switch connectors.
4. Check continuity between BCM and ground.
Power windows do not operate by front door lock assembly LH (key
cylinder switch)1. Front door lock assembly LH (key cylinder
switch) checkGW-44
2. Replace main power window and door lock/
unlock switchEI-31
Power window lock switch does not function 1. Power window lock switch circuit checkGW-46
Symptom Repair order Refer to page
10 - Ground : Battery voltage
19 - Ground : Battery voltage
LIIA2297E
17 - Ground : Continuity should exist.
LIIA0392E
Connector
Te r m i n a lConnector
Terminal Continuity
AB
BCM: M2068Main power window and
door lock/unlock switch:
D710 Yes
69C
19 Yes Main power window and
door lock/unlock switch:
D8
LIIA2215E