Infiniti EX35. Manual — part 1000
LAN
ICC BRANCH LINE CIRCUIT
LAN-59
< COMPONENT DIAGNOSIS >
[CAN]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
ICC BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000003137659
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 ICC sensor integrated unit for damage, bend and loose con-
nection (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 ICC sensor integrated unit.
2.
Check the resistance between the ICC sensor integrated unit harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the ICC sensor integrated unit branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the ICC sensor integrated unit. Refer to
.
Is the inspection result normal?
YES (Present error)>>Replace the ICC sensor integrated unit. Refer to
CCS-104, "Removal and Installa-
.
YES (Past error)>>Error was detected in the ICC sensor integrated unit branch line.
NO
>> Repair the power supply and the ground circuit.
ICC sensor integrated unit harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
E67
3
6
Approx. 54 – 66
LAN-60
< COMPONENT DIAGNOSIS >
[CAN]
IPDM-E BRANCH LINE CIRCUIT
IPDM-E BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000003137660
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-34, "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.
E6
40
39
Approx. 108 – 132
LAN
CAN COMMUNICATION CIRCUIT
LAN-61
< COMPONENT DIAGNOSIS >
[CAN]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
CAN COMMUNICATION CIRCUIT
Diagnosis Procedure
INFOID:0000000003137661
1.
CONNECTOR INSPECTION
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Disconnect all the unit connectors on CAN communication system.
4.
Check terminals and connectors for damage, bend and loose connection.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS CONTINUITY (SHORT CIRCUIT)
Check the continuity between the data link connector terminals.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Check the harness and repair the root cause.
3.
CHECK HARNESS CONTINUITY (SHORT CIRCUIT)
Check the continuity between the data link connector and the ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Check the harness and repair the root cause.
4.
CHECK ECM AND IPDM E/R TERMINATION CIRCUIT
1.
Remove the ECM and the IPDM E/R.
2.
Check the resistance between the ECM terminals.
3.
Check the resistance between the IPDM E/R terminals.
Is the measurement value within the specification?
YES
>> GO TO 5.
NO
>> Replace the ECM and/or the IPDM E/R.
5.
CHECK SYMPTOM
Connect all the connectors. Check if the symptoms described in the “Symptom (Results from interview with
customer)” are reproduced.
Data link connector
Continuity
Connector No.
Terminal No.
M24
6
14
Not existed
Data link connector
Ground
Continuity
Connector No.
Terminal No.
M24
6
Not existed
14
Not existed
ECM
Resistance (
Ω
)
Terminal No.
114
113
Approx. 108 – 132
IPDM E/R
Resistance (
Ω
)
Terminal No.
40
39
Approx. 108 – 132
LKIA0037E
LAN-62
< COMPONENT DIAGNOSIS >
[CAN]
CAN COMMUNICATION CIRCUIT
Inspection result
Reproduced>>GO TO 6.
Non-reproduced>>Start the diagnosis again. Follow the trouble diagnosis procedure when past error is
detected.
6.
CHECK UNIT REPRODUCTION
Perform the reproduction test as per the following procedure for each unit.
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Disconnect one of the unit connectors of CAN communication system.
NOTE:
ECM and IPDM E/R have a termination circuit. Check other units first.
4.
Connect the battery cable to the negative terminal. Check if the symptoms described in the “Symptom
(Results from interview with customer)” are reproduced.
NOTE:
Although unit-related error symptoms occur, do not confuse them with other symptoms.
Inspection result
Reproduced>>Connect the connector. Check other units as per the above procedure.
Non-reproduced>>Replace the unit whose connector was disconnected.
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