2011 INFINITI QX56 tire pressure

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HOW TO USE THIS SECTIONLAN-23
< HOW TO USE THIS MANUAL > [CAN]
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HOW TO USE THIS MANUAL
HOW TO USE THIS SECTION
CautionINFOID:0000000006220525
 This section describes information peculiar to a vehicle and inspection procedures.
 For trouble diagnosis procedure, refer to
LAN-18, "
Trouble Diagnosis Procedure".
Abbreviation ListINFOID:0000000006220526
Unit name abbreviations in CONSULT-III CAN diagnosis and in this section are as per the following list.
Abbreviation Unit name
4WD Transfer control unit
A-BAG Air bag diagnosis sensor unit ABS ABS actuator and electric unit (control unit)
ADP Driver seat control unit AFS AFS control unitAPA Accelerator pedal actuator AV AV control unit
BCM BCM
CGW CAN gateway DLC Data link connector
E-SUS Air levelizer control module ECM ECM
HVAC A/C auto amp. ICC ADAS control unit
IPDM-E IPDM E/R LANE Lane camera unit
LASER ICC sensor M&A Combination meter
PSB Pre-crash seat belt control unit (driver side)
PWBD Automatic back door control module
RDR-L Side radar LH
RDR-R Side radar RH STRG Steering angle sensor TCM TCM
TPMS Low tire pressure warning control unit
Revision: 2010 May2011 QX56

LAN-26
< SYSTEM DESCRIPTION >[CAN]
COMPONENT PARTS
SYSTEM DESCRIPTION
COMPONENT PARTS
Component Parts LocationINFOID:0000000006220530
1. Air bag diagnosis sensor unit 2. Lane camera unit 3. A/T assembly
4. AFS control unit 5. Transfer control unit 6. Low tire pressure warning control
unit
7. IPDM E/R 8. CAN gateway 9. ECM
10. A/C auto amp. 11. ICC sensor 12. AV control unit
13. BCM 14. ABS actuator an d electric unit (con-
trol unit) 15. Combination meter
16. Data link connector 17. Steering angle sensor 18. Accelerator pedal actuator
19. Driver seat control un it 20. Pre-crash seat be lt control unit (driv-
er side) 21. Air levelizer control module
22. ADAS control unit 23. Automatic back door control module 24. Side radar LH
25. Side radar RH
JSMIA0343ZZ
Revision: 2010 May2011 QX56

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SYSTEMLAN-27
< SYSTEM DESCRIPTION > [CAN]
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SYSTEM
CAN COMMUNICATION SYSTEM
CAN COMMUNICATION SYSTEM : CAN
System Specification ChartINFOID:0000000006220532
Determine CAN system type from the following specification chart.
NOTE:
Refer to LAN-18, "
Trouble Diagnosis Procedure" for how to use CAN system specification chart.
×: Applicable
VEHICLE EQUIPMENT IDENTIFICATION INFORMATION
NOTE:
Body type Wagon
Axle 2WD 4WD
Engine VK56VD
Transmission A/T
Brake control VDC
ICC system ××
CAN system type 1 2 3 4 CAN communication unit
ECM ××××
Transfer control unit ××
ABS actuator and electric unit (control unit) ××××
TCM ××××
Air bag diagnosis sensor unit ××××
AFS control unit ××
AV control unit ××××
BCM ××××
CAN gateway ××
Data link connector ××××
A/C auto amp. ××××
Combination meter ××××
Steering angle sensor ××××
Low tire pressure warning control unit ××××
IPDM E/R ××××
Driver seat control unit ××××
Pre-crash seat belt control unit (driver side) ××
Air levelizer control module ××××
ADAS control unit ××
Automatic back door control module ××××
ITS communication unit
ADAS control unit ××
Side radar RH ××
Side radar LH ××
Lane camera unit ××
Accelerator pedal actuator ××
ICC sensor ××
Revision: 2010 May2011 QX56

LAN-32
< SYSTEM DESCRIPTION >[CAN]
SYSTEM
Steering calibration signal R T R
Hazard request signalRT
RT
Horn request signal R T
Low tire pressure warning
lamp signal RT
Tire pressure data signal R T
A/C compresso r feedback
signal RRT
Detention switch signal R T R
Engine restart control sig-
nal RT
Front wiper stop position
signal RT
High beam status signal R T
Hood switch signal R T
Low beam status signal R R T
Push-button ignition switch
status signal RT
Starter control relay signal R T
Steering lock unit status
signal RT
CK SUSP indi cator lamp
signal RT
Brake fluid pressure control
signal R
T
BSW warning lamp signal R T
IBA OFF indicator lamp sig-
nal RT
IBA operation signal RT
ICC operation signal R T
ICC warning lamp signal R T
Lane departure warning
lamp signal RT
LDP ON indicator lamp sig-
nal RT
Target yaw moment signal R T
Signal name
ECM
4WD
ABS
TCM
A-BAG
AFSAV
BCM
CGW
HVAC
M&A
STRG
TPMS
IPDM-E ADP
PSB
E-SUS ICC
PWBD
Revision: 2010 May2011 QX56

LAN-58
< DTC/CIRCUIT DIAGNOSIS >[CAN]
MALFUNCTION AREA CHART
SHORT CIRCUIT
ITS Communication CircuitINFOID:0000000006220538
MAIN LINE
BRANCH LINE
Malfunction area Reference
ECM branch line circuit LAN-68, "
Diagnosis Procedure"
Transfer control unit branch line circuitLAN-69, "Diagnosis Procedure"
ABS actuator and electric unit (control unit) branch line circuit LAN-70, "Diagnosis Procedure"
TCM branch line circuit LAN-71, "Diagnosis Procedure"
Air bag diagnosis sensor unit branch line circuitLAN-72, "Diagnosis Procedure"
AFS control unit branch line circuitLAN-73, "Diagnosis Procedure"
AV control unit branch line circuitLAN-74, "Diagnosis Procedure"
BCM branch line circuitLAN-75, "Diagnosis Procedure"
CAN gateway branch line circuit (CAN communication circuit 1)LAN-76, "Diagnosis Procedure"
CAN gateway branch line circuit (CAN communication circuit 2)LAN-77, "Diagnosis Procedure"
Data link connector branch line circuitLAN-78, "Diagnosis Procedure"
A/C auto amp. branch line circuitLAN-79, "Diagnosis Procedure"
Combination meter branch line circuitLAN-80, "Diagnosis Procedure"
Steering angle sensor branch line circuitLAN-81, "Diagnosis Procedure"
Low tire pressure warning control unit branch line circuitLAN-82, "Diagnosis Procedure"
IPDM E/R branch line circuitLAN-83, "Diagnosis Procedure"
Driver seat control unit branch line circuitLAN-84, "Diagnosis Procedure"
Pre-crash seat belt control unit (driver side) branch line circuitLAN-85, "Diagnosis Procedure"
Air levelizer control module branch line circuitLAN-86, "Diagnosis Procedure"
ADAS control unit branch line circuitLAN-87, "Diagnosis Procedure"
Automatic back door control module branch line circuitLAN-88, "Diagnosis Procedure"
Malfunction area Reference
CAN communication circuit (Without ICC system) LAN-94, "
Diagnosis Procedure"
CAN communication circuit 1 (With ICC system)LAN-96, "Diagnosis Procedure"
CAN communication circuit 2 (With ICC system)LAN-98, "Diagnosis Procedure"
Malfunction area Reference
Main line between side radar RH and side radar LH LAN-64, "
Diagnosis Procedure"
Main line between side radar LH and lane camera unitLAN-65, "Diagnosis Procedure"
Main line between lane camera unit and accelerator pedal actu-
atorLAN-67, "Diagnosis Procedure"
Malfunction area Reference
Side radar RH branch line circuit LAN-89, "
Diagnosis Procedure"
Side radar LH branch line circuitLAN-90, "Diagnosis Procedure"
Lane camera unit branch line circuitLAN-91, "Diagnosis Procedure"
Accelerator pedal actuator branch line circuitLAN-92, "Diagnosis Procedure"
ICC sensor branch line circuitLAN-93, "Diagnosis Procedure"
Revision: 2010 May2011 QX56

LAN-82
< DTC/CIRCUIT DIAGNOSIS >[CAN]
TPMS BRANCH LINE CIRCUIT
TPMS BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000006220558
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the terminals and connectors of the low tire pressure warning control unit for damage, bend and loose connection (unit side and connector side).
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the terminal and connector.
2.CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of low tire pressure warning control unit.
2. Check the resistance between the low tire pressu re warning control unit harness connector terminals.
Is the measurement value within the specification?
YES >> GO TO 3.
NO >> Repair the low tire pressure warning control unit branch line.
3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the lo w tire pressure warning control unit. Refer to WT-51,
"Diagnosis Procedure".
Is the inspection result normal?
YES (Present error)>>Replace the low tire pressure warning control unit. Refer to WT-65, "Removal and
Installation".
YES (Past error)>>Error was detected in the low tire pressure warning control unit branch line.
NO >> Repair the power supply and the ground circuit.
Low tire pressure warning control unit harness connector Resistance (Ω)
Connector No. Terminal No.
M96 2 1 Approx. 54 – 66
Revision: 2010 May2011 QX56

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TPMS BRANCH LINE CIRCUITLAN-131
< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 1)]
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TPMS BRANCH
LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000006256254
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cabl e from the negative terminal.
3. Check the terminals and connectors of the low ti re pressure warning control unit for damage, bend and
loose connection (unit side and connector side).
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the terminal and connector.
2.CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of low tire pressure warning control unit.
2. Check the resistance between the low tire pressure warning control unit harness connector terminals.
Is the measurement value within the specification?
YES >> GO TO 3.
NO >> Repair the low tire pressure warning control unit branch line.
3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the lo w tire pressure warning control unit. Refer to WT-51,
"Diagnosis Procedure".
Is the inspection result normal?
YES (Present error)>>Replace the low tire pressure warning control unit. Refer to WT-65, "Removal and
Installation".
YES (Past error)>>Error was detected in the low tire pressure warning control unit branch line.
NO >> Repair the power supply and the ground circuit.
Low tire pressure warning control unit harness connector Resistance (Ω)
Connector No. Terminal No.
M96 2 1 Approx. 54 – 66
Revision: 2010 May2011 QX56

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TPMS BRANCH LINE CIRCUITLAN-157
< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 2)]
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TPMS BRANCH
LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000006256300
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cabl e from the negative terminal.
3. Check the terminals and connectors of the low ti re pressure warning control unit for damage, bend and
loose connection (unit side and connector side).
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the terminal and connector.
2.CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of low tire pressure warning control unit.
2. Check the resistance between the low tire pressure warning control unit harness connector terminals.
Is the measurement value within the specification?
YES >> GO TO 3.
NO >> Repair the low tire pressure warning control unit branch line.
3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the lo w tire pressure warning control unit. Refer to WT-51,
"Diagnosis Procedure".
Is the inspection result normal?
YES (Present error)>>Replace the low tire pressure warning control unit. Refer to WT-65, "Removal and
Installation".
YES (Past error)>>Error was detected in the low tire pressure warning control unit branch line.
NO >> Repair the power supply and the ground circuit.
Low tire pressure warning control unit harness connector Resistance (Ω)
Connector No. Terminal No.
M96 2 1 Approx. 54 – 66
Revision: 2010 May2011 QX56