2005 INFINITI QX4 Factory Service Manual

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Page 753 of 3419

INFINITI QX4 2005 Factory Service Manual BCS-6
BCM (BODY CONTROL MODULE)
Revision: October 20052005 QX56
When BCM is in sleep mode, transistors of OUTPUT 1 and 5 stop the output, and BCM enters low-cur-
rent-consumption mode. OUTPUTS (2, 3,

Page 754 of 3419

INFINITI QX4 2005 Factory Service Manual BCM (BODY CONTROL MODULE)
BCS-7
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Revision: October 20052005 QX56
BCM is activated with low current consumption mode.
CAN communication is not active.
When CAN communicatio

BCM (BODY CONTROL MODULE)
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Revision: October 20052005 QX56
BCM is activated with low current consumption mode.
CAN communication is not active.
When CAN communication operation is detected, it switches to CAN communication status.
When a state of the following switches changes, it switches to CAN communication state:
–Key switch
–Hazard switch
–Door lock/unlock switch
–Front door switch (LH, RH)
–Rear door switch (LH, RH)
–Back door switch
–Combination switch (passing, lighting switch 1st position, front fog lamp)
–Keyfob (lock/unlock signal)
–Door lock assembly LH (key cylinder switch)
When control performed only by BCM is required by switch, it shifts to CAN communication inactive
mode.
Status of combination switch reading function is changed.
SYSTEMS CONTROLLED BY BCM DIRECTLY
Power door lock system. Refer to BL-16, "POWER DOOR LOCK SYSTEM" .
Remote keyless entry system. Refer to BL-44, "REMOTE KEYLESS ENTRY SYSTEM" .
Power window system. Refer to GW-15, "POWER WINDOW SYSTEM" . NOTE
Sunroof system. Refer to RF-10, "SUNROOF" . NOTE
Room lamp timer. Refer to LT- 1 2 9 , "INTERIOR ROOM LAMP" .
Warning chime system. Refer to DI-42, "WARNING CHIME" .
Turn signal and hazard warning lamps system. Refer to LT-80, "TURN SIGNAL AND HAZARD WARNING
LAMPS" .
NOTE:
Power supply only. No system control.
SYSTEMS CONTROLLED BY BCM AND IPDM E/R
Panic system. Refer to BL-44, "REMOTE KEYLESS ENTRY SYSTEM" .
IVIS (NATS) system. Refer to BL-137, "IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)" .
Headlamp, tail lamp, front fog lamp, auto light and battery saver control systems. Refer to LT- 6 , "HEAD-
LAMP (FOR USA)" , LT- 3 3 , "HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -" , LT-108,
"PARKING, LICENSE PLATE AND TAIL LAMPS" , LT-69, "FRONT FOG LAMP" or LT-47, "AUTO LIGHT
SYSTEM" .
Front wiper and washer system. Refer to WW-4, "FRONT WIPER AND WASHER SYSTEM" .
Rear wiper and washer system. Refer to WW-35, "REAR WIPER AND WASHER SYSTEM" .
Rear window defogger system. Refer to GW-77, "REAR WINDOW DEFOGGER" .
MAJOR COMPONENTS AND CONTROL SYSTEM
System Input Output
Remote keyless entry system Keyfob
All-door locking actuator
Back door opener actuator
Turn signal lamp (LH, RH)
Power door lock systemFront power door lock/unlock
switch (LH, RH)All-door locking actuator
Power supply (IGN) to power window
and sunroofIgnition power supply Power supply to power window and sunroof system
Power supply (BAT) to power window
and sunroofBattery power supply Power supply to power window and sunroof system

Page 755 of 3419

INFINITI QX4 2005 Factory Service Manual BCS-8
BCM (BODY CONTROL MODULE)
Revision: October 20052005 QX56
CAN Communication System DescriptionEKS00D7X
Refer to LAN-5, "CAN COMMUNICATION" .
Panic alarmKey switch
KeyfobIPDM E/R
Auto light sys

Page 756 of 3419

INFINITI QX4 2005 Factory Service Manual BCM (BODY CONTROL MODULE)
BCS-9
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Revision: October 20052005 QX56
SchematicEKS00D7Y
WKWA4506E

Page 757 of 3419

INFINITI QX4 2005 Factory Service Manual BCS-10
BCM (BODY CONTROL MODULE)
Revision: October 20052005 QX56
WKWA4507E

Page 758 of 3419

INFINITI QX4 2005 Factory Service Manual BCM (BODY CONTROL MODULE)
BCS-11
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Revision: October 20052005 QX56
CONSULT-II Function (BCM)EKS00D7Z
CONSULT-II can display each diagnostic item using the diagnostic test mode

Page 759 of 3419

INFINITI QX4 2005 Factory Service Manual BCS-12
BCM (BODY CONTROL MODULE)
Revision: October 20052005 QX56
4. Select item to be diagnosed on “SELECT TEST ITEM” screen.
ITEMS OF EACH PART
NOTE:
CONSULT-II will only display systems the vehi

Page 760 of 3419

INFINITI QX4 2005 Factory Service Manual BCM (BODY CONTROL MODULE)
BCS-13
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Revision: October 20052005 QX56
WORK SUPPORT
Operation Procedure
1. Touch "BCM" on "SELECT TEST ITEM" screen.
2. Touch "WORK SUPPORT" on "SE

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