display 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]
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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

CAN SYSTEM (TYPE 1)LAN-49
[CAN]
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Revision: November 2009 2006 QX56
Case 8
Check display control unit circuit. Refer to LAN-131, "Display Control Unit Circuit Inspection" .
PKIC3281E
PKIC2788E

CAN SYSTEM (TYPE 2)LAN-71
[CAN]
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LAN
Revision: November 2009 2006 QX56
Case 12
Check display control unit circuit. Refer to LAN-131, "Display Control Unit Circuit Inspection" .
PKIC3530E
PKIC3028E

CAN SYSTEM (TYPE 3)LAN-89
[CAN]
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LAN
Revision: November 2009 2006 QX56
Case 8
Check display control unit circuit. Refer to LAN-131, "Display Control Unit Circuit Inspection" .
PKIC3506E
PKIC2912E

CAN SYSTEM (TYPE 4)LAN-113
[CAN]
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LAN
Revision: November 2009 2006 QX56
Case 12
Check display control unit circuit. Refer to LAN-131, "Display Control Unit Circuit Inspection" .
PKIC3551E
PKIC3046E

TROUBLE DIAGNOSIS FOR SYSTEMLAN-131
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Revision: November 2009 2006 QX56
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect driver seat control unit connector.
2. Check resistance between driver seat control unit harness con- nector terminals.
OK or NG
OK >> Replace driver seat control unit.
NG >> Repair harness between driver seat control unit and har- ness connector B69.
Combination Meter Circuit InspectionUKS004TM
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check terminals and connector of combination meter for damage, bend and loose connection (meter side and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect combination meter connector.
2. Check resistance between combination meter harness connec- tor terminals.
OK or NG
OK >> Replace combination meter.
NG >> Repair harness between combination meter and data link connector.
Display Control Unit Circuit InspectionUKS004TN
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check terminals and connector of display control unit for damage, bend and loose connection (control unit side and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
Driver seat control unit connector TerminalResistance
(Approx.)
P2 319 54 – 66 Ω
PKIA6842E
Combination
meter connector TerminalResistance
(Approx.)
M24 1112 54 – 66 Ω
PKIA6837E

LAN-132
[CAN]
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: November 20092006 QX56
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect display control unit connector.
2. Check resistance between display control unit harness connec- tor terminals.
OK or NG
OK >> Replace display control unit.
NG >> Repair harness between display control unit and data link connector.
BCM Circuit InspectionUKS004TO
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check terminals and connector of BCM for damage, bend and loose connection (control module side and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect BCM connector.
2. Check resistance between BCM harness connector terminals.
OK or NG
OK >> Replace BCM. Refer to BCS-20, "BCM" .
NG >> Repair harness between BCM and data link connector.
Data Link Connector Circuit InspectionUKS004TP
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the terminals and connector of data link connector for damage, bend and loose connection (con- nector side and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
Display control unit connector TerminalResistance
(Approx.)
M95 25 26 54 – 66 Ω
SKIA6884E
BCM connector TerminalResistance
(Approx.)
M18 394054 – 66 Ω
SKIA6869E

LT-16
HEADLAMP (FOR USA)
Revision: November 20092006 QX56
CONSULT-II Function (BCM)EKS00B81
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II OPERATION
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carries out CAN communication.
1. With the ignition switch OFF, connect CONSULT-II and CON-
SULT-II CONVERTER to the data link connector, then turn igni-
tion switch ON.
2. Touch "START (NISSAN BASED VHCL)".
3. Touch "BCM" on "SELECT SYSTEM" screen. If "BCM" is not indicated, go to GI-40, "
CONSULT-II Data Link
Connector (DLC) Circuit" .
BCM diagnostic
test item Diagnostic mode
Description
Inspection by part WORK SUPPORT
Supports 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 result 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.
BBIA0369E
BCIA0029E
BCIA0030E