Infiniti QX56 (Z62). Manual — part 891
LAN
MAIN LINE BETWEEN RDR-L AND LANE CIRCUIT
LAN-141
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 2)]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
MAIN LINE BETWEEN RDR-L AND LANE CIRCUIT
Diagnosis Procedure
INFOID:0000000006256284
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 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 CONTINUITY (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 CONTINUITY (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 CONTINUITY (OPEN CIRCUIT)
1.
Disconnect the connector of lane camera unit.
2.
Check the continuity between the harness connector and the lane camera unit 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 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
LAN-142
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 2)]
MAIN LINE BETWEEN RDR-L AND LANE CIRCUIT
NO
>> Repair the main line between the harness connector R1 and the lane camera unit.
LAN
MAIN LINE BETWEEN LANE AND APA CIRCUIT
LAN-143
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 2)]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
MAIN LINE BETWEEN LANE AND APA CIRCUIT
Diagnosis Procedure
INFOID:0000000006256285
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 R1
-
Harness connector M23
-
Harness connector M77
-
Harness connector E105
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 R1 and M23.
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 lane camera unit and the harness connector R1.
3.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect the harness connectors M77 and E105.
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 M23 and M77.
4.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect the connector of accelerator pedal actuator.
2.
Check the continuity between the harness connector and the accelerator pedal actuator 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 line between the lane camera unit and the accelerator
pedal actuator.
NO
>> Repair the main line between the harness connector E105 and the accelerator pedal actuator.
Connector No.
Terminal No.
Continuity
R1
26
29
Existed
23
28
Existed
Harness connector
Harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
M23
29
M77
22
Existed
28
23
Existed
Harness connector
Accelerator pedal actuator harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
E105
22
E66
5
Existed
23
4
Existed
LAN-144
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 2)]
ECM BRANCH LINE CIRCUIT
ECM BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000006256286
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 ECM 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 ECM.
2.
Check the resistance between the ECM harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the ECM branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the ECM. Refer to
Is the inspection result normal?
YES (Present error)>>Replace the ECM. Refer to
EC-535, "Removal and Installation"
YES (Past error)>>Error was detected in the ECM branch line.
NO
>> Repair the power supply and the ground circuit.
ECM harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
E80
146
151
Approx. 108 – 132
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