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QUICK REFERENCE INDEX
AGENERAL INFORMATIONGIGeneral Information
BENGINEEMEngine Mechanical
LUEngine Lubrication System
COEngine Cooling System
ECEngine Control System
FLFuel System
EXExhaust System
ACCAccelerator Control System
CTRANSMISSION/
TRANSAXLECLClutch System
MTManual Transaxle
ATAutomatic Transaxle
CVTCVT
DDRIVELINE/AXLEFAXFront Axle
RAXRear Axle
ESUSPENSIONFSUFront Suspension
RSURear Suspension
WTRoad Wheels & Tires
FBRAKESBRBrake System
PBParking Brake System
BRCBrake Control System
GSTEERINGPSPower Steering System
STCSteering Control System
HRESTRAINTSSBSeat Belts
SRSSupplemental Restraint System (SRS)
IBODYBLBody, Lock & Security System
GWGlasses, Window System & Mirrors
RFRoof
EIExterior & Interior
IPInstrument Panel
SESeat
JAIR CONDITIONERMTCManual Air Conditioner
KELECTRICALSCStarting & Charging System
LTLighting System
DIDriver Information System
WWWiper, Washer & Horn
BCSBody Control System
LANLAN System
AVAudio Visual, Navigation & Telephone System
ACSAuto Cruise Control System
PGPower Supply, Ground & Circuit Elements
LMAINTENANCEMAMaintenance
Edition: May 2007
Revision: May 2007
Publication No. SM8E-1C11U0
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© 2007 NISSAN NORTH AMERICA, INC.
All rights reserved. No part of this Service Manual may be reproduced or stored in a retrieval system, or transmitted in any
form, or by any means, electronic, mechanical, photo-copying, recording or otherwise, without the prior written permission
of Nissan North America Inc.
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BCM (BODY CONTROL MODULE)
BCS-3
< SERVICE INFORMATION >
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BCM (BODY CONTROL MODULE)
System DescriptionINFOID:0000000001704584
BCM (body control module) controls the operation of various electrical units installed on the vehicle.
BCM FUNCTION
BCM has a combination switch reading function for reading the operation of combination switches (light, wiper,
washer, turn signal) in addition to the function for controlling the operation of various electrical components.
Also, it functions as an interface that receives signals from the front air control, and sends signals to ECM
using CAN communication.
COMBINATION SWITCH READING FUNCTION
1. Description
• BCM reads combination switch (light, wiper) status, and controls various electrical components accord-
ing to the results.
• BCM reads information of a maximum of 20 switches by combining five output terminals (OUTPUT 1-5)
and five input terminals (INPUT 1-5).
2. Operation description
• BCM activates transistors of output terminals (OUTPUT 1-5) periodically and allows current to flow in
turn.
• If any (1 or more) of the switches are turned ON, circuit of output terminals (OUTPUT 1-5) and input ter-
minals (INPUT 1-5) becomes active.
• At this time, transistors of output terminals (OUTPUT 1-5) are activated to allow current to flow. When
voltage of input terminals (INPUT 1-5) corresponding to that switch changes, interface in BCM detects
voltage change and BCM determines that switch is ON.
3. BCM - Operation table of combination switch
• BCM reads operation status of combination switch by the combination shown in the following table.
SKIB7592E
BCS-6
< SERVICE INFORMATION >
BCM (BODY CONTROL MODULE)
• 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:
- Ignition switch
- Key switch (without Intelligent Key)
- Key switch and ignition knob switch (with Intelligent Key)
- Hazard switch
- Door lock/unlock switch
- Front door switch (LH, RH)
- Rear door switch (LH, RH)
- Back door lock assembly (Hatchback)
- Trunk key cylinder switch (Sedan)
- Trunk lamp switch and trunk release solenoid (Sedan)
- Combination switch (passing, lighting switch 1st position, front fog lamp)
- Keyfob (lock/unlock signal)
- Front door key cylinder switch LH
• 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-22 .
• Remote keyless entry system. Refer to BL-51
.
• Power window system. Refer to GW-18
. NOTE
• Sunroof system. Refer to RF-10. NOTE
• Room lamp timer. Refer to LT- 8 9 .
• Rear wiper and washer system. Refer to WW-24
.
NOTE:
Power supply only. No system control.
SYSTEMS CONTROLLED BY BCM AND IPDM E/R
• Panic system. Refer to BL-51 .
• Vehicle security (theft warning) system. Refer to BL-187
.
• NVIS(NATS) system. Refer to BL-210
.
• Headlamp, tail lamp and battery saver control systems. Refer to LT- 7 2
, LT- 4 or LT- 2 5 .
• Front fog lamp. Refer to LT- 3 9
.
• Front wiper and washer system. Refer to WW-3
.
• Rear window defogger system. Refer to GW-49
.
SYSTEMS CONTROLLED BY BCM AND COMBINATION METER
• Warning chime. Refer to DI-41 .
• Turn signal and hazard warning lamps. Refer to LT- 4 8
.
SYSTEMS CONTROLLED BY BCM AND INTELLIGENT KEY UNIT
• Intelligent Key system. Refer to BL-74 .
MAJOR COMPONENTS AND CONTROL SYSTEM
System Input Output
Remote keyless entry systemRemote keyless entry receiver
(keyfob)• All door locking actuators
• Turn signal lamp (LH, RH)
• Combination meter (turn signal lamp)
Intelligent Key system Intelligent Key unit• All door locking actuators
• Turn signal lamp (LH, RH)
• Combination meter (turn signal lamp)
Power door lock systemFront power door lock/unlock
switch (LH, RH)All door locking actuators
Power supply (IGN/RAP) to power
windowIgnition retained power supply Power supply to power window and sunroof system
Power supply (BAT) to power window Battery power supply Power supply to power window and sunroof system
BCM (BODY CONTROL MODULE)
BCS-7
< SERVICE INFORMATION >
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CAN Communication System DescriptionINFOID:0000000001704585
Refer to LAN-6, "System Description".
Panic alarm• Key switch
•KeyfobIPDM E/R
Vehicle security system• All door switches
•Keyfob
• Door lock/unlock switch
• Trunk key cylinder switch (Se-
dan)
• Front door key cylinder switch
LH• IPDM/ER
• Security indicator lamp
Battery saver control• Ignition switch
• Combination switchIPDM E/R
Headlamp Combination switch IPDM E/R
Tail lamp Combination switch IPDM E/R
Front fog lamp Combination switch IPDM E/R
Turn signal lamp Combination switch• Turn signal lamp
• Combination meter
Hazard lamp Hazard switch• Turn signal lamp
• Combination meter
Room lamp timer• Key switch
•Keyfob
• Main power window and door
lock/unlock switch
• Front door switch LH
• All door switchInterior room lamp
Back door switch signal (Hatchback) Back door lock assembly Luggage room lamp
Back door lock signal (Hatchback) Back door lock assembly Back door opener
Trunk lamp switch signalTrunk lamp switch and trunk re-
lease solenoidLuggage room lamp
Trunk lid opener signalTrunk lamp switch and trunk re-
lease solenoidTrunk lid opener
Key warning chime• Key switch
• Front door switch LHCombination meter (warning buzzer)
Light warning chime• Combination switch
• Key switch
• Front door switch LHCombination meter (warning buzzer)
Seat belt warning chime• Seat belt buckle switch LH
• Ignition switchCombination meter (warning buzzer)
Front wiper and washer system• Combination switch
• Ignition switchIPDM E/R
Rear window defogger Rear window defogger switch IPDM E/R
Rear wiper and washer system• Combination switch
• Ignition switchRear wiper motor
A/C switch signal Front air control ECM
Blower fan switch signal Front air control ECM
A/C indicator signal Front air control A/C indicator
Low tire pressure warning system Remote keyless entry receiver Combination meterSystem Input Output
BCM (BODY CONTROL MODULE)
BCS-11
< SERVICE INFORMATION >
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Terminal and Reference Value for BCMINFOID:0000000001704588
Te r m i n a lWire
colorSignal nameSignal
input/
outputMeasuring condition
Reference value or waveform
(Approx.) Ignition
switchOperation or condition
2BRCombination switch
input 5Input ONLighting, turn, wiper OFF
Wiper dial position 4
3GRCombination switch
input 4Input ONLighting, turn, wiper OFF
Wiper dial position 4
4LCombination switch
input 3Input ONLighting, turn, wiper OFF
Wiper dial position 4
5GCombination switch
input 2
Input ONLighting, turn, wiper OFF
Wiper dial position 4
6VCombination switch
input 1
7BRFront door key cylin-
der switch LH (unlock)Input
OFFON (open, 2nd turn) Momentary 1.5V
OFF (closed) 0V
8YFront door key cylin-
der switch LH (lock)InputOn (open) Momentary 1.5V
OFF (closed) 0V
9WRear window defogger
switchInput ONRear window defogger switch
ON0V
Rear window defogger switch
OFF5V
11 LIgnition switch (ACC
or ON)InputACC or
ONIgnition switch ACC or ON Battery voltage
12 SB Front door switch RH Input OFFON (open) 0V
OFF (closed) Battery voltage
13 GR Rear door switch RH Input OFFON (open) 0V
OFF (closed) Battery voltage
15 WTire pressure warning
check connectorInput OFF — 5V
SKIA5291E
SKIA5292E
SKIA5291E
SKIA5292E
BCM (BODY CONTROL MODULE)
BCS-13
< SERVICE INFORMATION >
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30*1VBack door/trunk out-
putOutput —Back door open (switch
closed)0V
Back door closed (switch
open)5V
30
*2VBack door opener
switchInput —All doors locked (SW OFF) Battery voltage
All doors unlocked (SW ON) 0V
30
*3VTrunk lid opener
switchInput —All doors locked (SW OFF) Battery voltage
All doors unlocked (SW ON) 0V
32 LGCombination switch
output 5Output ONLighting, turn, wiper OFF
Wiper dial position 4
33 YCombination switch
output 4Output ONLighting, turn, wiper OFF
Wiper dial position 4
34 VCombination switch
output 3Output ONLighting, turn, wiper OFF
Wiper dial position 4
35 RCombination switch
output 2
Output ONLighting, turn, wiper OFF
Wiper dial position 4
36 PCombination switch
output 1
37 G Key switch Input OFFKey inserted Battery voltage
Key removed 0V
38 W Ignition switch (ON) Input ON — Battery voltage
39 L CAN-H — — — —
40 P CAN-L — — — —
41
*5WTrunk key cylinder
switchInput —ON (Full unlock position) 0V
OFF (Neutral position) 5V
42 Y Trunk lamp switch Input OFFON (trunk open) 0V
OFF (trunk closed) Battery voltage
43 R Back door switch Input OFFON (open) 0V
OFF (closed) Battery voltage Te r m i n a lWire
colorSignal nameSignal
input/
outputMeasuring condition
Reference value or waveform
(Approx.) Ignition
switchOperation or condition
SKIA5291E
SKIA5292E
SKIA5291E
SKIA5292E
BCS-14
< SERVICE INFORMATION >
BCM (BODY CONTROL MODULE)
44 LG Rear wiper auto stop Input ONRear wiper operating 0
Rear wiper stopped Battery
45 GR Lock switch Input OFFON (lock) 0V
OFF Battery voltage
46 L Unlock switch Input OFFON (unlock) 0V
OFF Battery voltage
47 BR Front door switch LH Input OFFON (open) 0V
OFF (closed) Battery voltage
48 O Rear door switch LH Input OFFON (open) 0V
OFF (closed) Battery voltage
49 P Luggage room lamp Output OFFAny door open (ON) 0V
All doors closed (OFF) Battery voltage
50 SB A/C indicator Output ONA/C OFF 0
A/C ON Battery voltage
53
*4RBack door lock assem-
bly (actuator)Output OFF Back door (open) Battery voltage
53
*5RTrunk lamp switch and
trunk release solenoidOutput OFF Trunk lid (open) Battery voltage
55 VRear wiper motor out-
putOutput ONOFF 0
ON Battery voltage
56 R Battery saver output OutputOFF30 minutes after ignition
switch is turned OFF0V
ON — Battery voltage
57 LG Battery power supply Input OFF — Battery voltage
59 GFront door lock actua-
tor LH (unlock)Output OFFOFF (neutral) 0V
ON (unlock) Battery voltage
60 V Turn signal (left) Output ON Turn left ON
61 W Turn signal (right) Output ON Turn right ON
63 BR Interior room lamp Output OFFAny door
switchON (open) 0V
OFF (closed) Battery voltage
65 SBAll door lock actuators
(lock)Output OFFOFF (neutral) 0V
ON (lock) Battery voltage Te r m i n a lWire
colorSignal nameSignal
input/
outputMeasuring condition
Reference value or waveform
(Approx.) Ignition
switchOperation or condition
SKIA3009J
SKIA3009J
BCS-16
< SERVICE INFORMATION >
BCM (BODY CONTROL MODULE)
OK >> GO TO 3.
NG >> Repair or replace the harness.
3.CHECK GROUND CIRCUIT
Check continuity between BCM connector M20 terminal 67 and
ground.
OK or NG
OK >> Power supply and ground circuit is OK.
NG >> Repair or replace harness.
CONSULT-III Function (BCM)INFOID:0000000001704590
CONSULT-III can display each diagnostic item using the diagnostic test modes shown following.
ITEMS OF EACH PART
NOTE:
CONSULT-III will only display systems the vehicle possesses.67 - Ground : Continuity should exist.
LIIA0915E
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
MNTRThe 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.
System and itemCONSULT-III dis-
playDiagnostic test mode (Inspection by part)
WORK
SUPPORTSELF−
DIAG RE-
SULTSCAN DIAG
SUPPORT
MNTRDATA
MONITORECU
PA R T
NUMBERAC-
TIVE
TESTCON-
FIGU-
RATION
BCM BCM×× × × ×
Power door lock sys-
temDOOR LOCK×××
Rear defoggerREAR DEFOG-
GER××
Warning chime BUZZER××
Room lamp timer INT LAMP×××
Remote keyless entry
systemMULTI REMOTE
ENT×××
Headlamp HEAD LAMP×××
Wiper WIPER×××
Turn signal lamp
Hazard lampFLASHER××