2009 INFINITI QX56 battery

LAN-44
< FUNCTION DIAGNOSIS >[CAN]
CAN COMMUNICATION SYSTEM
FUNCTION DIAGNOSIS
CAN COMMUNICATION SYSTEM
CAN System Specification ChartINFOID:0000000003776453
Determine CAN system type from the following specificat
ion chart. Then choose the correct diagnosis sheet.
NOTE:
Refer to LAN-14, "
Trouble Diagnosis Procedure" for how to use CAN system specification chart.
×: Applicable
VEHICLE EQUIPMENT IDENTIFICATION INFORMATION
NOTE:
Check CAN system type from the vehicle shape and equipment.
CAN Communication Signal ChartINFOID:0000000003776454
Refer to LAN-13, "How to Use CAN Communication Signal Chart" for how to use CAN communication signal
chart.
NOTE:
Refer to LAN-36, "
Abbreviation List" for the abbreviations of the connecting units.
T: Transmit R: Receive
Body type Wagon
Axle 2WD4WD
Engine VK56DE
Transmission A/T
Brake control VDC
ICC system ××
CAN system type 1234
Diagnosis sheet LAN-40
LAN-41LAN-42LAN-43
AWMIA0012GB
Signal name/Connecting unitECM
TCM
LASER ICC
ADP
AV
BCM
HVAC I-KEY M&A
STRG 4WDABS
IPDM-E
Accelerator pedal position signal T RR R R
A/C compressor request signal T R
ASCD CRUISE lamp signal T R
ASCD OD cancel request signal T R
ASCD operation signal T R
ASCD SET lamp signal T R
Battery voltage signal T R
Closed throttle position signal T RR
Cooling fan speed request signal T R
Engine coolant temperature signal T RR
Revision: December 20092009 QX56

LAN
MAIN LINE BETWEEN TCM AND ADP CIRCUITLAN-61
< COMPONENT DIAGNOSIS > [CAN]
C
D
E
F
G H
I
J
K L
B A
O P
N
MAIN LINE BETWEEN TCM AND ADP CIRCUIT
Diagnosis ProcedureINFOID:0000000003776462
INSPECTION PROCEDURE
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 F14
- Harness connector E5
- Harness connector E34
- Harness connector B40
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.
- A/T assembly
- Harness connectors F14 and E5
2. Check the continuity between the A/T asse mbly harness connector and the harness connector.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair the main line between the A/T assembly and the harness connector F14.
3.CHECK HARNESS CONTI NUITY (OPEN CIRCUIT)
1. Disconnect the harness connectors E34 and B40.
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 E5 and E34.
4.CHECK HARNESS CONTI NUITY (OPEN CIRCUIT)
1. Disconnect the harness connectors B37 and B200.
2. Check the continuity between the harness connectors.
Is the inspection result normal?
YES (Present error)>>Check the following items again.
A/T assembly harness connector Harness connector
Continuity
Connector No. Terminal No.Connector No. Terminal No.
F9 3
F14 5
Existed
8 15Existed
Harness connector Harness connector
Continuity
Connector No. Terminal No.Connector No. Terminal No.
E5 5
E34 24
Existed
15 23Existed
Harness connector Harness connector
Continuity
Connector No. Terminal No.Connector No. Terminal No.
B40 24
B37 15
Existed
23 14Existed
Revision: December 20092009 QX56

LAN
MAIN LINE BETWEEN TCM AND LASER CIRCUITLAN-63
< COMPONENT DIAGNOSIS > [CAN]
C
D
E
F
G H
I
J
K L
B A
O P
N
MAIN LINE BETWEEN TC
M AND LASER CIRCUIT
Diagnosis ProcedureINFOID:0000000003776463
INSPECTION PROCEDURE
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 F14
- Harness connector E5
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.
- A/T assembly
- Harness connectors F14 and E5
2. Check the continuity between the A/T asse mbly harness connector and the harness connector.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair the main line between the A/T assembly and the harness connector F14.
3.CHECK HARNESS CONTI NUITY (OPEN CIRCUIT)
1. Disconnect the connector of ICC sensor.
2. Check the continuity between the harness connector and the ICC sensor harness connector.
Is the inspection result normal?
YES (Present error)>>Check the following items again. • Decision of CAN system type.
• Not received CONSULT-III data [SELF-DIAG RESULTS, CAN DIAG SUPPORT MNTR (“ECU
list” included)].
• Procedure for detecting root cause.
YES (Past error)>>Error was detected in the main line between the A/T assembly and the ICC sensor.
NO >> Repair the main line between the harness connector E5 and the ICC sensor.
A/T assembly harness connector Harness connector
Continuity
Connector No. Terminal No.Connector No. Terminal No.
F9 3
F14 5
Existed
8 15Existed
Harness connector ICC sensor harness connector
Continuity
Connector No. Terminal No.Connector No. Terminal No.
E5 5
E42 2
Existed
15 3Existed
Revision: December 20092009 QX56

LAN-64
< COMPONENT DIAGNOSIS >[CAN]
MAIN LINE BETWEEN LASER AND ICC CIRCUIT
MAIN LINE BETWEEN LA
SER AND ICC CIRCUIT
Diagnosis ProcedureINFOID:0000000003776464
INSPECTION PROCEDURE
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 E34
- Harness connector B40
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.
- ICC sensor
- Harness connectors E34 and B40
2. Check the continuity between the ICC sens or harness connector and the harness connector.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair the main line between the ICC sensor and the harness connector E34.
3.CHECK HARNESS CONTI NUITY (OPEN CIRCUIT)
1. Disconnect the connector of ICC unit.
2. Check the continuity between the harness connector and the ICC unit harness connector.
Is the inspection result normal?
YES (Present error)>>Check the following items again. • Decision of CAN system type.
• Not received CONSULT-III data [SELF-DIAG RESULTS, CAN DIAG SUPPORT MNTR (“ECUlist” included)].
• Procedure for detecting root cause.
YES (Past error)>>Error was detected in the ma in line between the ICC sensor and the ICC unit.
NO >> Repair the main line between the harness connector B40 and the ICC unit.
ICC sensor harness connector Harness connector
Continuity
Connector No. Terminal No.Connector No. Terminal No.
E42 2
E34 24
Existed
3 23Existed
Harness connector ICC unit harness connector
Continuity
Connector No. Terminal No.Connector No. Terminal No.
B40 24
B13 14
Existed
23 5Existed
Revision: December 20092009 QX56

LAN
MAIN LINE BETWEEN ICC AND ADP CIRCUITLAN-65
< COMPONENT DIAGNOSIS > [CAN]
C
D
E
F
G H
I
J
K L
B A
O P
N
MAIN LINE BETWEEN ICC AND ADP CIRCUIT
Diagnosis ProcedureINFOID:0000000003776465
INSPECTION PROCEDURE
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.
-ECM
- ICC unit
- Harness connectors B37 and B200
4. Check the continuity between the ICC unit harness connector and the harness connector.
Is the inspection result normal?
YES (Present error)>>Check the following items again. • Decision of CAN system type.
• Not received CONSULT-III data [SELF-DIAG RESULTS, CAN DIAG SUPPORT MNTR (“ECU
list” included)].
• Procedure for detecting root cause.
YES (Past error)>>Error was detected in the main li ne between the ICC unit and the driver seat control unit.
NO >> Repair the main line between t he ICC unit and the harness connector B37.
ICC unit harness connector Harness connector
Continuity
Connector No. Terminal No.Connector No. Terminal No.
B13 14
B37 15
Existed
5 14Existed
Revision: December 20092009 QX56

LAN-66
< COMPONENT DIAGNOSIS >[CAN]
MAIN LINE BETWEE
N ADP AND AV CIRCUIT
MAIN LINE BETWEEN ADP AND AV CIRCUIT
Diagnosis ProcedureINFOID:0000000003776466
INSPECTION PROCEDURE
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 B69
- Harness connector M40
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.
- Harness connectors B200 and B37
- Harness connectors B69 and M40
2. Check the continuity bet ween the harness connectors.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair the main line between the harness connectors B37 and B69.
3.CHECK HARNESS CONTI NUITY (OPEN CIRCUIT)
1. Disconnect the connector of AV control unit.
2. Check the continuity between the harness conn ector and the AV control unit harness connector.
Is the inspection result normal?
YES (Present error)>>Check the following items again. • Decision of CAN system type.
• Not received CONSULT-III data [SELF-DIAG RESULTS, CAN DIAG SUPPORT MNTR (“ECUlist” included)].
• Procedure for detecting root cause.
YES (Past error)>>Error was detected in the main line between the driver seat control unit and the AV control
unit.
NO >> Repair the main line between the harness connector M40 and the AV control unit.
Harness connector Harness connector
Continuity
Connector No. Terminal No.Connector No. Terminal No.
B37 15
B69 51J
Existed
14 52JExisted
Harness connector AV control unit harness connector
Continuity
Connector No. Terminal No.Connector No. Terminal No.
M40 51J
M45 96
Existed
52J 97Existed
Revision: December 20092009 QX56

LAN
MAIN LINE BETWEEN AV AND DLC CIRCUITLAN-67
< COMPONENT DIAGNOSIS > [CAN]
C
D
E
F
G H
I
J
K L
B A
O P
N
MAIN LINE BETWEEN AV AND DLC CIRCUIT
Diagnosis ProcedureINFOID:0000000003776467
INSPECTION PROCEDURE
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.
-ECM
- AV control unit
4. Check the continuity between the AV contro l unit harness connector and the data link connector.
Is the inspection result normal?
YES (Present error)>>Check the following items again. • Decision of CAN system type.
• Not received CONSULT-III data [SELF-DIAG RESULTS, CAN DIAG SUPPORT MNTR (“ECU
list” included)].
• Procedure for detecting root cause.
YES (Past error)>>Error was detected in the main line between the AV control unit and the data link connec-
tor.
NO >> Repair the main line between the AV control unit and the data link connector.
AV control unit harness connector Data link connector
Continuity
Connector No. Terminal No.Connector No. Terminal No.
M45 96
M22 6
Existed
97 14Existed
Revision: December 20092009 QX56

LAN-68
< COMPONENT DIAGNOSIS >[CAN]
MAIN LINE BETWEEN DLC AND M&A CIRCUIT
MAIN LINE BETWEEN
DLC AND M&A CIRCUIT
Diagnosis ProcedureINFOID:0000000003776468
INSPECTION PROCEDURE
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
- Combination meter
4. Check the continuity between the data link connector and the combination meter harness connector.
Is the inspection result normal?
YES (Present error)>>Check the following items again. • Decision of CAN system type.
• Not received CONSULT-III data [SELF-DIAG RESULTS, CAN DIAG SUPPORT MNTR (“ECUlist” included)].
• Procedure for detecting root cause.
YES (Past error)>>Error was detected in the main line between the data link connector and the combination
meter.
NO >> Repair the main line between the data link connector and the combination meter.
Data link connector Combination meter harness connector
Continuity
Connector No. Terminal No.Connector No. Terminal No.
M22 6
M24 10
Existed
14 11Existed
Revision: December 20092009 QX56