steering INFINITI QX56 2006 Factory Service Manual

LAN-36
[CAN]
CAN COMMUNICATION
Revision: November 20092006 QX56
ASCD CRUISE lamp signalTR
ASCD OD cancel request signal T R
ASCD operation signal T R
ASCD SET lamp signal TR
Battery voltage signal T R
Closed throttle position signal T R R
Cooling fan speed request signal T R
Engine coolant temperature signal TRR
Engine speed signal T RRR R R R R
Engine status signal TR
Fuel consumption monitor signal TR
TR
ICC steering switch signal TR
Malfunction indicator lamp signal TR
Wide open throttle position signal T R
A/T CHECK indicator lamp signal TR
A/T fluid temperature sensor signal TR
A/T position indicator lamp signal TR R R
A/T self-diagnosis signal R T
Current gear position signal TR R
Output shaft revolution signal R TR R
P range signal TR R R
Turbine revolution signal R TR
ICC sensor signal T R
Buzzer output signal TR
RT
ICC OD cancel request signal R RT
ICC operation signal R RT
ICC system display signal TR
System setting signal TR
RT
1st position switch signal RT
4th position switch signal RT
Distance to empty signal T R
Signals
ECM
TCM
ICC sensor
*1
ICC unit
*1
Driver seat control unit Combination meter
Display control unit BCM
Steering angle sensor Front air control
Transfer control unit
ABS actuator and electric unit (control unit) IPDM E/R

CAN COMMUNICATIONLAN-37
[CAN]
C
DE
F
G H
I
J
L
M A
B
LAN
Revision: November 2009 2006 QX56
Fuel level low warning signalT R
Fuel level sensor signal RT
Parking brake switch signal TR
Stop lamp switch signal RTR
Tow mode switch signal RT
Vehicle speed signal RR
RT
RRR R T RR
A/C switch/indicator signal TR
RT
A/C switch signal RTR
Blower fan motor switch signal RT
Day time running light request signal TR
Door switch signal R R R TR
Front fog light request signal TR
Front wiper request signal RT R
High beam request signal RT R
High beam status signal R T
Horn chirp signal TR
Ignition switch signal RT R
Key fob door unlock signal RT
Key fob ID signal RT
Key switch signal RT
Low beam request signal TR
Low beam status signal R T
Position light request signal RT R
Rear window defogger switch signal TR R
Sleep wake up signal R RT R
Theft warning horn request signal TR
Tire pressure data signal R T
Tire pressure signal RT
Turn indicator signal RT
Steering angle sensor signal TR
ABS malfunction signal RT
ABS warning lamp signal RT
Signals
ECM
TCM
ICC sensor
*1
ICC unit
*1
Driver seat control unit Combination meter
Display control unit BCM
Steering angle sensor Front air control
Transfer control unit
ABS actuator and electric unit (control unit) IPDM E/R

LAN-38
[CAN]
CAN COMMUNICATION
Revision: November 20092006 QX56

*1: with ICC model only
Brake pressure sensor signal
RT
Brake warning lamp signal RT
SLIP indicator lamp signal RT
TCS malfunction signal RT
VDC malfunction signal RT
VDC OFF indicator lamp signal RR T
VDC operation signal RT
Front wiper stop position signal RT
Hood switch signal RT
Rear window defogger control signal RR T
Signals
ECM
TCM
ICC sensor
*1
ICC unit
*1
Driver seat control unit Combination meter
Display control unit BCM
Steering angle sensor Front air control
Transfer control unit
ABS actuator and electric unit (control unit) IPDM E/R

LAN-52
[CAN]
CAN SYSTEM (TYPE 1)
Revision: November 20092006 QX56
Case 11
Check steering angle sensor circuit. Refer to LAN-133, "Steering Angle Sensor Circuit Inspection" .
PKIC3284E
PKIC2791E

LAN-74
[CAN]
CAN SYSTEM (TYPE 2)
Revision: November 20092006 QX56
Case 15
Check steering angle sensor circuit. Refer to LAN-133, "Steering Angle Sensor Circuit Inspection" .
PKIC3533E
PKIC3031E

LAN-92
[CAN]
CAN SYSTEM (TYPE 3)
Revision: November 20092006 QX56
Case 11
Check steering angle sensor circuit. Refer to LAN-133, "Steering Angle Sensor Circuit Inspection" .
PKIC3509E
PKIC2915E

LAN-116
[CAN]
CAN SYSTEM (TYPE 4)
Revision: November 20092006 QX56
Case 15
Check steering angle sensor circuit. Refer to LAN-133, "Steering Angle Sensor Circuit Inspection" .
PKIC3554E
PKIC3049E

TROUBLE DIAGNOSIS FOR SYSTEMLAN-133
[CAN]
C
DE
F
G H
I
J
L
M A
B
LAN
Revision: November 2009 2006 QX56
2. CHECK HARNESS FOR OPEN CIRCUIT
Check resistance between data link connector terminals.
OK or NG
OK >> Diagnose again. Refer to LAN-5, "TROUBLE DIAG-
NOSES WORK FLOW" .
NG >> Repair harness between data link connector and combi-
nation meter.
Steering Angle Sensor Circuit InspectionUKS004TQ
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check terminals and connector of steering angle sensor for damage, bend and loose connection (sensor side and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect steering angle sensor connector.
2. Check resistance between steering angle sensor harness con- nector terminals.
OK or NG
OK >> Replace steering angle sensor.
NG >> Repair harness between steering angle sensor and data link connector.
Front Air Control Circuit InspectionUKS004TR
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check terminals and connector of front air control for damage, bend and loose connection (unit side and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
Data link
connector TerminalResistance
(Approx.)
M22 614 54 – 66 Ω
PKIA9865E
Steering angle
sensor connector TerminalResistance
(Approx.)
M47 3454 – 66 Ω
PKIA6838E

LT-98
LIGHTING AND TURN SIGNAL SWITCH
Revision: November 20092006 QX56
LIGHTING AND TURN SIGNAL SWITCHPFP:25540
Removal and InstallationEKS00BA5
REMOVAL
1. Remove steering column cover.
2. While pressing tabs, pull lighting and turn signal switch toward
driver door and disconnect from the base.
INSTALLATION
Installation is in the reverse order of removal.
LKIA0013E

LT-126
TRAILER TOW
Revision: November 20092006 QX56
TRAILER TOWPFP:93020
Component Parts and Harness Connector LocationEKS00BB1
System DescriptionEKS00BB2
Power is supplied at all times

to ignition relay, located in the IPDM E/R (intelligent power distribution module engine room), and

through 50A fusible link (letter f , located in the fuse and fusible link box)

to BCM (body control module) terminal 70, and

through 10A fuse (No. 32, located in the IPDM E/R)
1. Fuse and fusible link box2. IPDM E/R fuse layout 3. Fuse and relay box
4. IPDM E/R E118, E119, E120, E121, E122, E123, E124 5. 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