Nissan Qashqai (2007-2010). Manual — part 1793
LAN
MAIN LINE BETWEEN BCM AND DLC CIRCUIT
LAN-1197
< COMPONENT DIAGNOSIS >
[CAN SYSTEM (TYPE 82)]
C
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MAIN LINE BETWEEN BCM AND DLC CIRCUIT
Diagnosis Procedure
INFOID:0000000001058431
INSPECTION PROCEDURE
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
-
BCM
4.
Check the continuity between the BCM harness connector and the data link 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 BCM and the data link connector.
NO
>> Repair the main line between the BCM and the data link connector.
BCM harness connector
Data link connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
M65
19
M4
6
Existed
20
14
Existed
LAN-1198
< COMPONENT DIAGNOSIS >
[CAN SYSTEM (TYPE 82)]
ECM BRANCH LINE CIRCUIT
ECM BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000001058435
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.
-
HR engine/MR engine models
-
K9K engine models
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 the following.
• HR16DE (With EURO-OBD):
• HR16DE (Without EURO-OBD):
• MR20DE (With EURO-OBD):
• MR20DE (Without EURO-OBD):
EC-1069, "Diagnosis Procedure"
EC-1317, "Diagnosis Procedure"
Is the inspection result normal?
YES (Present error)>>•Replace the ECM. Refer to the following.
- HR16DE (With EURO-OBD):
EC-29, "ADDITIONAL SERVICE WHEN REPLACING CONTROL
UNIT : Special Repair Requirement"
- HR16DE (Without EURO-OBD):
EC-368, "ADDITIONAL SERVICE WHEN REPLACING CON-
TROL UNIT : Special Repair Requirement"
- MR20DE (With EURO-OBD):
EC-645, "ADDITIONAL SERVICE WHEN REPLACING CON-
TROL UNIT : Special Repair Requirement"
- MR20DE (Without EURO-OBD):
EC-989, "ADDITIONAL SERVICE WHEN REPLACING CON-
TROL UNIT : Special Repair Requirement"
EC-1273, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair
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
84
83
Approx. 108 – 132
ECM harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
E60
100
99
Approx. 108 – 132
LAN
ABS BRANCH LINE CIRCUIT
LAN-1199
< COMPONENT DIAGNOSIS >
[CAN SYSTEM (TYPE 82)]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
ABS BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000001058436
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.
-
Models with ESP
-
Models with ABS
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 the
following.
• ABS models:
• ESP models:
BRC-106, "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
26
15
Approx. 54 – 66
ABS actuator and electric unit (control unit) harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
E34
26
15
Approx. 54 – 66
LAN-1200
< COMPONENT DIAGNOSIS >
[CAN SYSTEM (TYPE 82)]
4WD BRANCH LINE CIRCUIT
4WD BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000001058438
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 4WD control unit connector 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 4WD control unit.
2.
Check the resistance between the 4WD control unit harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the 4WD control unit branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the 4WD control unit. Refer to
.
Is the inspection result normal?
YES (Present error)>>•Replace the 4WD control unit. Refer to the following.
- RHD models:
- LHD models:
YES (Past error)>>Error was detected in the 4WD control unit branch line.
NG
>> Repair the power supply and the ground circuit.
4WD control unit harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
M69
8
16
Approx. 54 – 66
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