steering INFINITI QX56 2006 Factory Service Manual

INSTRUMENT PANEL ASSEMBLYIP-11
C
DE
F
G H
J
K L
M A
B
IP
Revision: November 2009 2006 QX56
REMOVAL
1. Remove center console. Refer to IP-17, "DISASSEMBLY AND ASSEMBLY" .
2. Remove instrument lower cover LH. Refer to IP-13, "
INSTRUMENT LOWER COVER LH" .
3. Remove steering column. Refer to PS-10, "
STEERING COLUMN" .
4. Remove glove box assembly. Refer to IP-14, "
Lower Instrument Panel RH and Glove Box" .
5. Remove front power socket LH. Refer to WW-54, "
Front Power Socket LH, Rear Cargo Power Socket" .
6. Remove front power socket RH. Refer to WW-54, "
Front Power Socket RH (For Cigarette Lighter), Con-
sole Power Socket" .
7. Remove combination meter. Refer to IP-14, "
Lower Instrument Panel RH and Glove Box" .
8. Remove audio unit. Refer to AV- 5 5 , "
AUDIO UNIT" .
9. Remove display unit. Refer to AV- 1 6 7 , "
DISPLAY CONTROL UNIT" .
10. Remove lower knee protector LH.
11. Remove GPS antenna. Refer to AV- 1 6 7 , "
Removal and Installation" .
12. Remove optical sensor. Refer to LT- 6 4 , "
Optical Sensor" .
13. Remove side ventilator assembly LH.
14. Remove side ventilator assembly RH.
15. Remove front pillar finisher. Refer to EI-36, "
FRONT PILLAR FINISHER" .
16. Remove passenger air bag module. Refer to SRS-50, "
FRONT PASSENGER AIR BAG MODULE"
17. Remove instrument panel.
18. Disconnect remaining instrument panel assembly electrical connectors.
INSTALLATION
Installation is in the reverse order of removal.
1. Steering member brackets2. Bracket assembly LH3. Steering member assembly
4. Combination meter cover 5. Defrost grille6. Instrument panel speaker LH
7. Instrument panel 8. Bin mat9. Side ventilator assembly LH
10. Instrument lower cover LH 11. Lower knee protector LH12. Steering column cover upper
13. Steering column cover lower 14. Center console lower cover LH 15. Combination meter
16. Audio unit bracket LH 17. Driver instrument stay18. Audio unit
19. Passenger instrument stay 20. Display assembly21. Switch assembly
22. Cluster lid A 23. Cluster lid D ventilator LH24. Front passenger air bag status light
25. Power socket LH and power socket RH 26. Clock 27. Cluster lid C
28. Front air control 29. Audio control30. Hazard switch
31. Cluster lid D ventilator RH 32. Cluster lid D33. Glove box door
34. Glove box assembly 35. Lower instrument panel RH 36. Glove box striker
37. Rubber bumpers 38. Glove box damper39. Audio unit bracket RH
40. Center console lower cover RH 41. Fuse block cover 42. Side ventilator assembly RH
43. Instrument panel bracket 44. Instrument panel speaker RH 45. Bracket assembly RH
46. Key cylinder escutcheon 47. Instrument lower cover RH

INSTRUMENT PANEL ASSEMBLYIP-13
C
DE
F
G H
J
K L
M A
B
IP
Revision: November 2009 2006 QX56
4. Pull to disconnect cluster lid D clips.
5. Disconnect cluster lid electrical connectors.
Installation
Installation is in the reverse order of removal.
INSTRUMENT LOWER COVER LH
Removal
1. Remove instrument lower cover LH, using power tool.
2. Pull to disconnect instrument lower cover LH clips.
3. Disconnect instrument lower cover LH electrical connectors.
Installation
Installation is in the reverse order of removal.
COMBINATION METER
Removal
1. Disconnect battery negative terminal.
2. Remove instrument lower cover LH. Refer to IP-13, "
INSTRU-
MENT LOWER COVER LH" .
3. Remove steering column cover upper and steering column cover lower.
4. Remove combination meter cover.
5. Remove cluster lid A.
6. Disconnect cluster lid A electrical connectors.
7. Remove the combination meter screws, using power tool.
8. Disconnect combination meter electrical connectors.
Installation
Installation is in the reverse order of removal.
A/T FINISHER
Removal
1. Remove shift knob.
2. Remove storage compartment mask.
3. Pull to disconnect AT finisher clips.
4. Disconnect A/T finisher electrical connectors.
Installation
Installation is in the reverse order of removal.
LIIA1327E
LIIA1249E
LIIA1335E

LAN-2Revision: November 20092006 QX56
Wiring Diagram — CAN — ..................................
... 98
Check Sheet ........................................................... 99 CHECK SHEET RESULTS (EXAMPLE) .......... .102
TROUBLE DIAGNOSIS FOR SYSTEM ................. .123
Inspection Between TCM and ICC Sensor Circuit .123
Inspection Between TCM and Driver Seat Control
Unit Circuit ........................................................... .124
Inspection Between ICC Sensor and ICC Unit Cir-
cuit ....................................................................... .125
Inspection Between ICC Unit and Driver Seat Con-
trol Unit Circuit ..................................................... .126
Inspection Between Driver Seat Control Unit and
Data Link Connector Circuit ................................. .126
Inspection Between Data Link Connector and ABS
Actuator and Electric Unit (Control Unit) Circuit ... .127
ECM Circuit Inspection ........................................ .128TCM Circuit Inspection .........................................
.129
ICC Sensor Circuit Inspection .............................. .129
ICC Unit Circuit Inspection ................................... .130
Driver Seat Control Unit Circuit Inspection .......... .130
Combination Meter Circuit Inspection .................. .131
Display Control Unit Circuit Inspection ................. .131
BCM Circuit Inspection ........................................ .132
Data Link Connector Circuit Inspection ................ .132
Steering Angle Sensor Circuit Inspection ............. .133
Front Air Control Circuit Inspection ...................... .133
Transfer Control Unit Circuit Inspection ............... .134
ABS Actuator and Electric Unit (Control Unit) Circuit
Inspection ............................................................. .134
IPDM E/R Circuit Inspection ................................ .135
CAN Communication Circuit Inspection ............... .135
IPDM E/R Ignition Relay Circuit Inspection .......... .137

LAN-22
[CAN]
TROUBLE DIAGNOSES WORK FLOW
Revision: November 20092006 QX56
DESCRIPTION OF “CAN DIAG SUPPORT MNTR” SCREEN
FOR TRANSFER CONTROL UNIT
Display Results (Present)

OK: Normal

UNKWN: The diagnosed unit does not transmit or receive the applicable data normally.
CAUTION:
“UNKWN” is indicated by erasing the self-diagnosis result when any malfunction was detected in past.

–: There is no received unit or the unit is not in the condition that reception diagnosis is performed.
Display Results (Past)

OK: Normal

0: There is malfunction now.

1 ~ 39: Displays when it is normal at present and finds malfunction in the past. It increases like 0 →1→ 2...38→ 39 after returning to the
normal condition whenever IGN OFF →ON. If it is over 39, it is fixed to 39 until the self-diagnostic results are erased. It returns to 0
when malfunction is detected again in the process.

– : Undiagnosed
CAUTION:

“UNKWN” is indicated in “Present” and “0” is indicated in
“Past” when any malfunction is detected at present.

“UNKWN” is indicated in “Present” and “1~39” is indicated
in “Past” when any malfunction was detected in past.
PKIC3565E
“SELECT SYSTEM ”
screen “
CAN DIAG SUPPORT
MNTR ” screen Description
Present Past
ALL MODE AWD/
4WD TRANSMIT DIAG Make sure of normal transmission.
OK/UNKWN/–
OK/0/1~39/ –
ECM
Make sure of normal reception from ECM. OK/UNKWN/ –
VDC/TCS/ABS Make sure of normal reception from ABS actua-
tor and electric unit (control unit). OK/UNKWN/
–
TCM Make sure of normal reception from TCM. OK/UNKWN/ –
STRG Make sure of normal reception from steering
angle sensor. OK/UNKWN/
–
SKIB3246E

TROUBLE DIAGNOSES WORK FLOWLAN-23
[CAN]
C
DE
F
G H
I
J
L
M A
B
LAN
Revision: November 2009 2006 QX56
DESCRIPTION OF “CAN DIAG SUPPORT MNTR” SCREEN
FOR ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)
Display Results (Present)

OK: Normal

NG: Malfunction

UNKWN: The diagnosed unit does not transmit or receive the applicable data normally.
PKIC4722E
“SELECT SYSTEM ”
screen “
CAN DIAG SUPPORT
MNTR ” screen Description
Present
ABS INITIAL DIAG
Make sure that microcomputer in ECU works normally. OK/NG
TRANSMIT DIAG Make sure of normal transmission. OK/UNKWN
ECM Make sure of normal reception from ECM. OK/UNKWN
TCM Make sure of normal reception from TCM. OK/UNKWN
METER/M&A METER/M&A is not diagnosed. UNKWN
STRG Make sure of normal reception from steering angle sensor. OK/UNKWN
ICC Make sure of normal reception from ICC unit. OK/UNKWN
AWD/4WD Make sure of normal reception from transfer control unit. OK/UNKWN

LAN-26
[CAN]
CAN COMMUNICATION
Revision: November 20092006 QX56
CAN COMMUNICATIONPFP:23710
System DescriptionUKS000NU
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
Component Parts and Harness Connector LocationUKS004R0
1. ECM E162. IPDM E/R E122 3. ICC sensor E42 (with ICC)
4. Display control unit M95 5. Combination meter M24 6. ABS actuator and electric unit (con-
trol unit) E125
7. BCM M18 8. Data link connector M22 9. Steering angle sensor M47
10. Driver seat control unit P2 11. ICC unit B13 (with ICC) 12. Air bag diagnosis sensor unit M35
13. A/T assembly F9 14. Front air control M50 15. Transfer control unit E142 (with 4−
wheel drive)
BKIA0189E

LAN-32
[CAN]
CAN COMMUNICATION
Revision: November 20092006 QX56

Ty p e 2
Input/output signal chart
T: Transmit R: Receive
PKIC3015E
SignalsECM
TCM
ICC sensor
*1
ICC unit
*1
Driver seat control unit Combination meter
Display control unit BCM
Steering angle sensor Front air control
ABS actuator and electric unit (control unit) IPDM E/R
A/C compressor request signal T R
Accelerator pedal position signal T RR R
ASCD CRUISE lamp signal TR
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
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

CAN COMMUNICATIONLAN-33
[CAN]
C
DE
F
G H
I
J
L
M A
B
LAN
Revision: November 2009 2006 QX56
A/T fluid temperature sensor signalTR
A/T position indicator lamp signal TR R
A/T self-diagnosis signal R T
Current gear position signal TR R
Output shaft revolution signal R TR
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
Fuel level low warning signal T 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
T
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 RTR
High beam request signal RT 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
ABS actuator and electric unit (control unit) IPDM E/R

LAN-34
[CAN]
CAN COMMUNICATION
Revision: November 20092006 QX56

*1: with ICC model only
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
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 RRT
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
ABS actuator and electric unit (control unit) IPDM E/R

CAN COMMUNICATIONLAN-35
[CAN]
C
DE
F
G H
I
J
L
M A
B
LAN
Revision: November 2009 2006 QX56
TYPE 3/TYPE4
System diagram

Ty pe 3

Ty pe 4
Input/output signal chart
T: Transmit R: Receive
PKIC2720E
PKIC3016E
SignalsECM
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
A/C compressor request signal T R
Accelerator pedal position signal T RR R R