Infiniti QX56 (JA60). Manual — part 665
LAN
CAN COMMUNICATION SYSTEM
LAN-59
< COMPONENT DIAGNOSIS >
[CAN]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
AAMIA0016GB
LAN-60
< COMPONENT DIAGNOSIS >
[CAN]
MALFUNCTION AREA CHART
MALFUNCTION AREA CHART
Main Line
INFOID:0000000005146468
Branch Line
INFOID:0000000005146469
Short Circuit
INFOID:0000000005146470
Malfunction area
Reference
Main line between TCM and driver seat control unit
Main line between TCM and ICC sensor
Main line between ICC sensor and ICC unit
Main line between ICC unit and driver seat control unit
Main line between driver seat control unit and AV control unit
Main line between AV control unit and data link connector
Main line between data link connector and combination meter
Main line between combination meter and ABS actuator and
electric unit (control unit)
Main line between combination meter and transfer control unit
Main line between transfer control unit and ABS actuator and
electric unit (control unit)
Malfunction area
Reference
ECM branch line circuit
TCM branch line circuit
ICC sensor branch line circuit
ICC unit branch line circuit
Driver seat control unit branch line circuit
AV control unit branch line circuit
BCM branch line circuit
Data link connector branch line circuit
A/C auto amp. branch line circuit
Intelligent Key unit branch line circuit
Combination meter branch line circuit
Steering angle sensor branch line circuit
Transfer control unit branch line circuit
ABS actuator and electric unit (control unit) branch line circuit
IPDM E/R branch line circuit
Malfunction area
Reference
CAN communication circuit
LAN
MAIN LINE BETWEEN TCM AND ADP CIRCUIT
LAN-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 Procedure
INFOID:0000000005146471
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 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 CONTINUITY (OPEN CIRCUIT)
1. Disconnect the harness connectors F14 and E5.
2. Check the continuity between the harness connector terminals.
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 CONTINUITY (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 CONTINUITY (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.
• 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 TCM and the driver seat control unit.
Connector No.
Terminal No.
Continuity
F14
3
5
Existed
14
15
Existed
Harness connector
Harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
E5
5
E34
24
Existed
15
23
Existed
Harness connector
Harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
B40
24
B37
15
Existed
23
14
Existed
LAN-62
< COMPONENT DIAGNOSIS >
[CAN]
MAIN LINE BETWEEN TCM AND ADP CIRCUIT
NO
>> Repair the main line between the harness connectors B40 and B37.
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