BATTERY INFINITI QX56 2011 Factory Service Manual

INSTRUMENT PANEL ASSEMBLYIP-15
< REMOVAL AND INSTALLATION >
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[ ]:Number indicates step in removal procedures.
WARNING:
Before servicing, turn igni tion switch OFF, disconnect battery ne gative terminal, and wait 3 minutes or
more.
CAUTION:
When removing, always use a remover tool that is made of plastic.
REMOVAL
1. Remove instrument lower cover.
1. Pull disengaged pawls downward.
2. Pull back instrument lower cover.
3. Disconnect harness connectors.
Squawker LH [20] [20]
Instrument lower panel LH [21] [2] [2] [21]
Disconnect meter control switch
harness connector [22] [3] [3] [22]
Driver air bag module [23] [23]
Steering wheel [24] [24]
Steering column cover [25] [25]
Combination switch [26] [26]
Spiral cable [27] [27]
Cluster lid A [28] [4] [4] [28]
Combination meter [29] [5] [29]
Instrument finisher A [5]
Upper ventilator grille [30] [30]
Center speaker [31] [31]
Cluster lid C [32] [6] [6] [32]
Cluster lid C lower [33] [7] [33]
AV control unit [34] [8] [34]
Cluster lid D [35] [7] [35]
Front display unit [36] [8] [36]
instrument panel assembly
mounting screws and bolts [37] [37]
Squawker LH harness clip [38] [38]
Instrument panel assembly [39] [39]
Instrument finisher B [40]
PA R T S
INSTRU-
MENT
PA N E L
ASSEMBLY COMBINA-
TION
METER FRONT
DISPLAY UNIT AV c o n t r o l
unit INSTRU-
MENT
FINISHER A INSTRU-
MENT
FINISHER B CENTER
CONSOLE
ASSEMBLY
: Pawl
JMJIA3828ZZ
Revision: 2010 May2011 QX56

LAN
PRECAUTIONSLAN-7
< PRECAUTION > [CAN FUNDAMENTAL]
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PRECAUTION
PRECAUTIONS
Precautions for Trouble DiagnosisINFOID:0000000006220510
CAUTION:
• Never apply 7.0 V or more to the measurement terminal.
 Use a tester with open terminal voltage of 7.0 V or less.
 Turn the ignition switch OFF and disconnect th
e battery cable from the negative terminal when
checking the harness.
Precautions for Harness RepairINFOID:0000000006220511
• Solder the repaired area and wrap tape around the soldered area. NOTE:
A fray of twisted lines must be within 110 mm (4.33 in).
 Bypass connection is never allowed at the repaired area. NOTE:
Bypass connection may cause CAN communication error. The
spliced wire becomes separated and t he characteristics of twisted
line are lost.
 Replace the applicable harness as an assembly if error is detected on the shield lines of CAN communica-
tion line.
SKIB8766E
SKIB8767E
Revision: 2010 May2011 QX56

LAN
TROUBLE DIAGNOSISLAN-11
< SYSTEM DESCRIPTION > [CAN FUNDAMENTAL]
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TROUBLE DIAGNOSIS
Condition of Error DetectionINFOID:0000000006220517
DTC of CAN communication is indicated on SELF-DIA
G RESULTS on CONSULT-III if a CAN communication
signal is not transmitted or received between units for 2 seconds or more.
NOTE:
DTCs of CAN communication are as follows:
 U0101
 U0140
 U0164
 U1000
 U1001
 U1507
 U1508
CAN COMMUNICATION SYSTEM ERROR
 CAN communication line open (CAN-H, CAN-L, or both)
 CAN communication line short (ground, betw een CAN communication lines, other harnesses)
 Error of CAN communication control circuit of the unit connected to CAN communication line
WHEN DTC OF CAN COMMUNICATION IS I NDICATED EVEN THOUGH CAN COMMUNICATION
SYSTEM IS NORMAL
 Removal/installation of parts: Error may be detec ted when removing and installing CAN communication unit
and related parts while turning the ignition switch ON. (A DTC except for CAN communication may be
detected.)
 Fuse blown out (removed): CAN communication of the unit may cease.
 Voltage drop: Error may be detected if voltage drops due to discharged battery when turning the ignition
switch ON (Depending on the control unit which carries out CAN communication).
 Error may be detected if the power supply circuit of the control unit, which carries out CAN communication,
malfunctions (Depending on the control unit which carries out CAN communication).
 Error may be detected if reprogramming is not completed normally.
CAUTION:
CAN communication system is normal if DTC of CAN communication is indicated on SELF-DIAG
RESULTS of CONSULT-III under th e above conditions. Erase the memo ry of the self-diagnosis of each
unit.
Symptom When Error Occurs in CAN Communication SystemINFOID:0000000006220518
In CAN communication system, multiple units mutually transmit and receive signals. Each unit cannot transmit
and receive signals if any error occurs on CAN communicati on line. Under this condition, multiple control units
related to the root cause malfunction or go into fail-safe mode.
ERROR EXAMPLE
NOTE:
 Each vehicle differs in symptom of each unit under fail-safe mode and CAN communication line wiring.
 Refer to LAN-23, "
Abbreviation List" for the unit abbreviation.
Revision: 2010 May2011 QX56

LAN-24
< PRECAUTION >[CAN]
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint S
ystem (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000006238426
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” of this
Service Manual.
WARNING:
 To avoid rendering the SRS inopera tive, which could increase the risk of personal injury or death in
the event of a collision that would result in air bag inflation, all maintenance must be performed by
an authorized NISS AN/INFINITI dealer.
 Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the “SRS AIR BAG”.
 Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
 When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the ignition ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s)
with a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly
causing serious injury.
 When using air or electric power tools or hammers , always switch the ignition OFF, disconnect the
battery, and wait at least 3 minu tes before performing any service.
Precautions for Trouble DiagnosisINFOID:0000000006220528
CAUTION:
 Never apply 7.0 V or more to the measurement terminal.
 Use a tester with open terminal voltage of 7.0 V or less.
 Turn the ignition switch OFF and disconnect th e battery cable from the negative terminal when
checking the harness.
Precautions for Harness RepairINFOID:0000000006220529
 Solder the repaired area and wrap tape around the soldered area.
NOTE:
A fray of twisted lines must be within 110 mm (4.33 in).
SKIB8766E
Revision: 2010 May2011 QX56

LAN-60
< DTC/CIRCUIT DIAGNOSIS >[CAN]
MAIN LINE BETWEEN ABS AND DLC CIRCUIT
MAIN LINE BETWEEN
ABS AND DLC CIRCUIT
Diagnosis ProcedureINFOID:0000000006220539
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).
- Harness connector E107
- Harness connector M82
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the terminal and connector.
2.CHECK HARNESS CONTI NUITY (OPEN CIRCUIT)
1. Disconnect the following harness connectors.
- ABS actuator and electric unit (control unit)
- Harness connectors E107 and M82
2. Check the continuity between the ABS actuator and electric unit (control unit) harness connector and the
harness connector.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair the main line between the ABS actuat or and electric unit (control unit) and the harness
connector E107.
3.CHECK HARNESS CONTI NUITY (OPEN CIRCUIT)
Check the continuity between the harness connector and the data link connector.
Is the inspection result normal?
YES (Present error)>>Check CAN system type decision again.
YES (Past error)>>Error was detected in the main li ne between the ABS actuator and electric unit (control
unit) and the data link connector.
NO >> Repair the main line between the harness connector M82 and the data link connector.
ABS actuator and electric unit (control unit)
harness connector Harness connector
Continuity
Connector No. Terminal No. Connector No. Terminal No.
E36 41
E107 1 Existed
27 6 Existed
Harness connector Data link connector Continuity
Connector No. Terminal No. Connector No. Terminal No.
M82 1
M4 6 Existed
6 14 Existed
Revision: 2010 May2011 QX56

LAN
MAIN LINE BETWEEN DLC AND E-SUS CIRCUITLAN-61
< DTC/CIRCUIT DIAGNOSIS > [CAN]
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MAIN LINE BETWEEN DLC AND E-SUS CIRCUIT
Diagnosis ProcedureINFOID:0000000006238655
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cabl e from the negative terminal.
3. Check the following terminals and connectors for damage, bend and loose connection (connector side
and harness side).
- Harness connector M19
- Harness connector B2
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the terminal and connector.
2.CHECK HARNESS CONTI NUITY (OPEN CIRCUIT)
1. Disconnect the harness connectors M19 and B2.
2. Check the continuity between the data link connector and the harness connector.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair the main line between the data link connector and the harness connector M19.
3.CHECK HARNESS CONTI NUITY (OPEN CIRCUIT)
1. Disconnect the connector of air levelizer control module.
2. Check the continuity between the harness connector and the air levelizer control module harness connec-
tor.
Is the inspection result normal?
YES (Present error)>>Check CA N system type decision again.
YES (Past error)>>Error was detected in the main line between the data link connector and the air levelizer
control module.
NO >> Repair the main line between the harness c onnector B2 and the air levelizer control module.
Data link connector Harness connector
Continuity
Connector No. Terminal No. Connector No. Terminal No.
M4 6
M19 29 Existed
14 30 Existed
Harness connector Air levelizer control module harness connector Continuity
Connector No. Terminal No. Connector No. Terminal No.
B2 29
B84 16 Existed
30 7 Existed
Revision: 2010 May2011 QX56

LAN-62
< DTC/CIRCUIT DIAGNOSIS >[CAN]
MAIN LINE BETWEEN E-SUS AND ADP CIRCUIT
MAIN LINE BETWEEN E-SUS AND ADP CIRCUIT
Diagnosis ProcedureINFOID:0000000006238656
1.CHECK HARNESS CONTI
NUITY (OPEN CIRCUIT)
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Disconnect the following harness connectors.
-ECM
- Air levelizer control module
- Harness connectors B24 and B460
4. Check the continuity between the air levelizer control module harness connector and the harness connec-
tor.
Is the inspection result normal?
YES (Present error)>>Check CAN system type decision again.
YES (Past error)>>Error was detected in the main li ne between the air levelizer control module and the driver
seat control unit.
NO >> Repair the main line between the air levelizer control module and the harness connector B24.
Air levelizer control module harness connector Harness connector Continuity
Connector No. Terminal No. Connector No. Terminal No.
B84 16
B24 13 Existed
7 12 Existed
Revision: 2010 May2011 QX56

LAN
MAIN LINE BETWEEN ADP AND PWBD CIRCUIT
LAN-63
< DTC/CIRCUIT DIAGNOSIS > [CAN]
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MAIN LINE BETWEEN ADP AND PWBD CIRCUIT
Diagnosis ProcedureINFOID:0000000006220540
1.CHECK HARNESS CONTI
NUITY (OPEN CIRCUIT)
1. Turn the ignition switch OFF.
2. Disconnect the battery cabl e from the negative terminal.
3. Disconnect the following harness connectors.
- CAN gateway
- Harness connectors B460 and B24
- Automatic back door control module
4. Check the continuity between the harness connecto r and the automatic back door control module harness
connector.
Is the inspection result normal?
YES (Present error)>>Check CA N system type decision again.
YES (Past error)>>Error was detected in the main li ne between the driver seat control unit and the automatic
back door control module.
NO >> Repair the main line between the harness c onnector B24 and the automatic back door control
module.
Harness connector Automatic back door control module
harness connector Continuity
Connector No. Terminal No. Connector No. Terminal No.
B24 13
B26 7 Existed
12 6 Existed
Revision: 2010 May2011 QX56

LAN-64
< DTC/CIRCUIT DIAGNOSIS >[CAN]
MAIN LINE BETWEEN RDR-R AND RDR-L CIRCUIT
MAIN LINE BETWEEN RDR-R AND RDR-L CIRCUIT
Diagnosis ProcedureINFOID:0000000006220541
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).
- Harness connector B239
- Harness connector B63
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the terminal and connector.
2.CHECK HARNESS CONTI NUITY (OPEN CIRCUIT)
1. Disconnect the following harness connectors.
- Side radar RH
- Harness connectors B239 and B63
2. Check the continuity between the side r adar RH harness connector and the harness connector.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair the main line between the side radar RH and the harness connector B239.
3.CHECK HARNESS CONTI NUITY (OPEN CIRCUIT)
1. Disconnect the connector of side radar LH.
2. Check the continuity between the harness c onnector and the side radar LH harness connector.
Is the inspection result normal?
YES (Present error)>>Check CAN system type decision again.
YES (Past error)>>Error was detected in the main line between the side radar RH and the side radar LH.
NO >> Repair the main line between the harness connector B63 and the side radar LH.
Side radar RH harness connector Harness connector Continuity
Connector No. Terminal No. Connector No. Terminal No.
B243 4
B239 7 Existed
33Existed
Harness connector Side radar LH harness connector Continuity
Connector No. Terminal No. Connector No. Terminal No.
B63 7
B74 4 Existed
33Existed
Revision: 2010 May2011 QX56

LAN
MAIN LINE BETWEEN RDR-L AND LANE CIRCUITLAN-65
< DTC/CIRCUIT DIAGNOSIS > [CAN]
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MAIN LINE BETWEEN RD
R-L AND LANE CIRCUIT
Diagnosis ProcedureINFOID:0000000006220542
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cabl e from the negative terminal.
3. Check the following terminals and connectors for damage, bend and loose connection (connector side
and harness side).
- Harness connector B2
- Harness connector M19
- Harness connector M23
- Harness connector R1
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the terminal and connector.
2.CHECK HARNESS CONTI NUITY (OPEN CIRCUIT)
1. Disconnect the following harness connectors.
- Side radar LH
- Harness connectors B2 and M19
2. Check the continuity between the side radar LH harness connector and the harness connector.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair the main line between the side radar LH and the harness connector B2.
3.CHECK HARNESS CONTI NUITY (OPEN CIRCUIT)
1. Disconnect the harness connectors M23 and R1.
2. Check the continuity between the harness connectors.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair the main line between the harness connectors M19 and M23.
4.CHECK HARNESS CONTI NUITY (OPEN CIRCUIT)
1. Disconnect the connector of lane camera unit.
2. Check the continuity between the harness c onnector and the lane camera unit harness connector.
Is the inspection result normal?
YES (Present error)>>Check CA N system type decision again.
YES (Past error)>>Error was detected in the main li ne between the side radar LH and the lane camera unit.
Side radar LH harness connector Harness connector
Continuity
Connector No. Terminal No. Connector No. Terminal No.
B74 4
B2 27 Existed
3 28 Existed
Harness connector Harness connector Continuity
Connector No. Terminal No. Connector No. Terminal No.
M19 27
M23 26 Existed
28 23 Existed
Harness connector Lane camera unit harness connector Continuity
Connector No. Terminal No. Connector No. Terminal No.
R1 26
R8 4 Existed
23 8 Existed
Revision: 2010 May2011 QX56