Nissan Maxima. Instruction — part 811
LAN-56
< DTC/CIRCUIT 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.
LAN
MAIN LINE BETWEEN DLC AND HVAC CIRCUIT
LAN-57
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 1)]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
DTC/CIRCUIT DIAGNOSIS
MAIN LINE BETWEEN DLC AND HVAC CIRCUIT
Diagnosis Procedure
INFOID:0000000009990290
1.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Disconnect the following harness connectors.
-
ECM
-
A/C auto amp.
4. Check the continuity between the data link connector and the A/C auto amp. 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 A/C auto
amp.
NO
>> Repair the main line between the data link connector and the A/C auto amp.
Data link connector
A/C auto amp. harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
M22
6
M37
1
Existed
14
2
Existed
LAN-58
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 1)]
MAIN LINE BETWEEN HVAC AND A-BAG CIRCUIT
MAIN LINE BETWEEN HVAC AND A-BAG CIRCUIT
Diagnosis Procedure
INFOID:0000000009990291
1.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Disconnect the following harness connectors.
-
A/C auto amp.
-
Harness connectors M1 and E30
4. Check the continuity between the A/C auto amp. harness connector and the 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 A/C auto amp. and the air bag diagnosis
sensor unit.
NO
>> Repair the main line between the A/C auto amp. and the air bag diagnosis sensor unit.
A/C auto amp. harness connector
Harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
M37
1
M1
15G
Existed
2
8G
Existed
LAN
MAIN LINE BETWEEN A-BAG AND ABS CIRCUIT
LAN-59
< DTC/CIRCUIT DIAGNOSIS >
[CAN SYSTEM (TYPE 1)]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
MAIN LINE BETWEEN A-BAG AND ABS CIRCUIT
Diagnosis Procedure
INFOID:0000000009990292
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 M1
-
Harness connector E30
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.
-
A/C auto amp.
-
Harness connectors M1 and E30
2. Check the continuity between the A/C auto amp. harness connector and the harness connector.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair the main line between the air bag diagnosis sensor unit and the harness connector M1.
3.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1. Disconnect the connector of ABS actuator and electric unit (control unit).
2. Check the continuity between the harness connector and the ABS actuator and electric unit (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 air bag diagnosis sensor unit and the
ABS actuator and electric unit (control unit).
NO
>> Repair the main line between the harness connector E30 and the ABS actuator and electric unit
(control unit).
A/C auto amp. harness connector
Harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
M37
1
M1
15G
Existed
2
8G
Existed
Harness connector
ABS actuator and electric unit (control unit)
harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
E30
15G
E26
26
Existed
8G
15
Existed
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