Nissan Quest E52. Instruction — part 846
LAN-98
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 2)]
ECM BRANCH LINE CIRCUIT
ECM BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000009978235
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 the
EC-460, "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.
E16
114
113
Approx. 108 – 132
LAN
EPS BRANCH LINE CIRCUIT
LAN-99
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 2)]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
EPS BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000009978236
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 power steering control module 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 power steering control module.
2.
Check the resistance between the power steering control module harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the power steering control module branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the power steering control module. Refer to
.
Is the inspection result normal?
YES (Present error)>>Replace the power steering oil pump assembly. Refer to
.
YES (Past error)>>Error was detected in the power steering control module branch line.
NO
>> Repair the power supply and the ground circuit.
Power steering control module harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
E34
8
7
Approx. 54 – 66
LAN-100
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 2)]
ABS BRANCH LINE CIRCUIT
ABS BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000009978237
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 ABS actuator and electric unit (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 ABS actuator and electric unit (control unit).
2.
Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi-
nals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the ABS actuator and electric unit (control unit) branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit). Refer to
BRC-101, "Diagnosis Procedure"
.
Is the inspection result normal?
YES (Present error)>>Replace the ABS actuator and electric unit (control unit). Refer to
.
YES (Past error)>>Error was detected in the ABS actuator and electric unit (control unit) branch line.
NO
>> Repair the power supply and the ground circuit.
ABS actuator and electric unit (control unit) harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
E36
23
21
Approx. 54 – 66
LAN
TCM BRANCH LINE CIRCUIT
LAN-101
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 2)]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
TCM BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000009978238
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).
-
TCM
-
Harness connector F123
-
Harness connector E6
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 TCM.
2.
Check the resistance between the TCM harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the TCM branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the TCM. Refer to
Is the inspection result normal?
YES (Present error)>>Replace the TCM. Refer to
TM-158, "Removal and Installation"
YES (Past error)>>Error was detected in the TCM branch line.
NO
>> Repair the power supply and the ground circuit.
TCM harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
F23
32
31
Approx. 54 – 66
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