Infiniti QX56 (Z62). Manual — part 870
LAN
MALFUNCTION AREA CHART
LAN-57
< DTC/CIRCUIT DIAGNOSIS >
[CAN]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
DTC/CIRCUIT DIAGNOSIS
MALFUNCTION AREA CHART
System Diagram
INFOID:0000000006220536
CAN Communication Circuit
INFOID:0000000006220537
MAIN LINE
BRANCH LINE
JSMIA0344GB
Malfunction area
Reference
Main line between ABS actuator and electric unit (control unit)
and data link connector
Main line between data link connector and air levelizer control
module
Main line between air levelizer control module and driver seat
control unit (Without ICC system)
Main line between driver seat control unit and automatic back
door control module (With ICC system)
LAN-58
< DTC/CIRCUIT DIAGNOSIS >
[CAN]
MALFUNCTION AREA CHART
SHORT CIRCUIT
ITS Communication Circuit
INFOID:0000000006220538
MAIN LINE
BRANCH LINE
Malfunction area
Reference
ECM branch line circuit
Transfer control unit branch line circuit
ABS actuator and electric unit (control unit) branch line circuit
TCM branch line circuit
Air bag diagnosis sensor unit branch line circuit
AFS control unit branch line circuit
AV control unit branch line circuit
BCM branch line circuit
CAN gateway branch line circuit (CAN communication circuit 1)
CAN gateway branch line circuit (CAN communication circuit 2)
Data link connector branch line circuit
A/C auto amp. branch line circuit
Combination meter branch line circuit
Steering angle sensor branch line circuit
Low tire pressure warning control unit branch line circuit
IPDM E/R branch line circuit
Driver seat control unit branch line circuit
Pre-crash seat belt control unit (driver side) branch line circuit
Air levelizer control module branch line circuit
ADAS control unit branch line circuit
Automatic back door control module branch line circuit
Malfunction area
Reference
CAN communication circuit (Without ICC system)
CAN communication circuit 1 (With ICC system)
CAN communication circuit 2 (With ICC system)
Malfunction area
Reference
Main line between side radar RH and side radar LH
Main line between side radar LH and lane camera unit
Main line between lane camera unit and accelerator pedal actu-
ator
Malfunction area
Reference
Side radar RH branch line circuit
Side radar LH branch line circuit
Lane camera unit branch line circuit
Accelerator pedal actuator branch line circuit
ICC sensor branch line circuit
LAN
MALFUNCTION AREA CHART
LAN-59
< DTC/CIRCUIT DIAGNOSIS >
[CAN]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
SHORT CIRCUIT OR OPEN CIRCUIT
Malfunction area
Reference
ITS communication circuit
LAN-60
< DTC/CIRCUIT DIAGNOSIS >
[CAN]
MAIN LINE BETWEEN ABS AND DLC CIRCUIT
MAIN LINE BETWEEN ABS AND DLC CIRCUIT
Diagnosis Procedure
INFOID: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 CONTINUITY (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 actuator and electric unit (control unit) and the harness
connector E107.
3.
CHECK HARNESS CONTINUITY (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 line 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
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