Nissan Pathfinder. Manual — part 810
LAN
MAIN LINE BETWEEN DLC AND 4WD CIRCUIT
LAN-193
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 5)]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
MAIN LINE BETWEEN DLC AND 4WD CIRCUIT
Diagnosis Procedure
INFOID:0000000009175082
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 M40
-
Harness connector B69
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 M40 and B69.
2. Check the continuity between the data link connector and the harness connector.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair the main line between the data link connector and the harness connector M40.
3.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1. Disconnect the connector of 4WD control unit.
2. Check the continuity between the harness connector and the 4WD control 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 data link connector and the 4WD control
unit.
NO
>> Repair the main line between the harness connector B69 and the 4WD control unit.
Data link connector
Harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
M22
6
M40
89A
Existed
14
90A
Existed
Harness connector
4WD control unit harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
B69
89A
B67
8
Existed
90A
16
Existed
LAN-194
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 5)]
ECM BRANCH LINE CIRCUIT
ECM BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000009175083
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-466, "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
IPDM-E BRANCH LINE CIRCUIT
LAN-195
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 5)]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
IPDM-E BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000009175084
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 IPDM E/R 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 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.
E119
29
28
Approx. 54 – 66
LAN-196
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 5)]
TCM BRANCH LINE CIRCUIT
TCM BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000009175085
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 F32
-
Harness connector E2
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-195, "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.
F15
33
23
Approx. 54 – 66
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