Infiniti QX56 (Z62). Manual — part 876
LAN
STRG BRANCH LINE CIRCUIT
LAN-81
< DTC/CIRCUIT DIAGNOSIS >
[CAN]
C
D
E
F
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J
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B
A
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N
STRG BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000006220557
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 steering angle sensor 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 steering angle sensor.
2.
Check the resistance between the steering angle sensor harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the steering angle sensor branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the steering angle sensor. Refer to
Is the inspection result normal?
YES (Present error)>>Replace the steering angle sensor. Refer to
BRC-139, "Removal and Installation"
.
YES (Past error)>>Error was detected in the steering angle sensor branch line.
NO
>> Repair the power supply and the ground circuit.
Steering angle sensor harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
M30
5
2
Approx. 54 – 66
LAN-82
< DTC/CIRCUIT DIAGNOSIS >
[CAN]
TPMS BRANCH LINE CIRCUIT
TPMS BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000006220558
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 low tire pressure warning control unit 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 low tire pressure warning control unit.
2.
Check the resistance between the low tire pressure warning control unit harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the low tire pressure warning control unit branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the low tire pressure warning control unit. Refer to
.
Is the inspection result normal?
YES (Present error)>>Replace the low tire pressure warning control unit. Refer to
YES (Past error)>>Error was detected in the low tire pressure warning control unit branch line.
NO
>> Repair the power supply and the ground circuit.
Low tire pressure warning control unit harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
M96
2
1
Approx. 54 – 66
LAN
IPDM-E BRANCH LINE CIRCUIT
LAN-83
< DTC/CIRCUIT DIAGNOSIS >
[CAN]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
IPDM-E BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000006220559
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 (unit side and con-
nector side).
-
IPDM E/R
-
Harness connector E105
-
Harness connector M77
-
Harness connector M19 (Without ICC system)
-
Harness connector B2 (Without ICC system)
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 IPDM E/R.
2.
Check the resistance between the IPDM E/R harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the IPDM E/R branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the IPDM E/R. Refer to
Is the inspection result normal?
YES (Present error)>>Replace the IPDM E/R. Refer to
PCS-32, "Removal and Installation"
YES (Past error)>>Error was detected in the IPDM E/R branch line.
NO
>> Repair the power supply and the ground circuit.
IPDM E/R harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
E13
27
26
Approx. 108 – 132
LAN-84
< DTC/CIRCUIT DIAGNOSIS >
[CAN]
ADP BRANCH LINE CIRCUIT
ADP BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000006220560
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 (unit side and con-
nector side).
-
Driver seat control unit
-
Harness connector B460
-
Harness connector B24
-
CAN gateway (With ICC system)
Is the inspection result normal?
YES (With ICC system)>>GO TO 2.
YES (Without ICC system)>>GO TO 3.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect the connector of CAN gateway.
2.
Check the continuity between the CAN gateway harness connector terminals.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Check the harness and repair the root cause (CAN communication circuit 2). Refer to
.
3.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Connect the connector of CAN gateway. (With ICC system)
2.
Disconnect the connector of driver seat control unit.
3.
Check the resistance between the driver seat control unit harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 4.
NO
>> Repair the driver seat control unit branch line.
4.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the driver seat control unit. Refer to
CONTROL UNIT : Diagnosis Procedure"
Is the inspection result normal?
YES (Present error)>>Replace the driver seat control unit. Refer to
ADP-135, "Removal and Installation"
YES (Past error)>>Error was detected in the driver seat control unit branch line.
NO
>> Repair the power supply and the ground circuit.
CAN gateway harness connector
Continuity
Connector No.
Terminal No.
M125
4
6
Existed
10
12
Existed
Driver seat control unit harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
B451
1
17
Approx. 54 – 66
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