Nissan Qashqai J11. Manual — part 399
ECK-156
< DTC/CIRCUIT DIAGNOSIS >
[K9K]
POWER SUPPLY AND GROUND CIRCUIT
DTC/CIRCUIT DIAGNOSIS
POWER SUPPLY AND GROUND CIRCUIT
ECM
ECM : Diagnosis Procedure
INFOID:0000000010289711
1.
CHECK FUSE
1.
Turn ignition switch OFF.
2.
Check that the following fuse is not fusing.
Is the fuse fusing?
YES
>> Replace the fuse after repairing the applicable circuit.
NO
>> GO TO 2.
2.
CHECK GROUND CONNECTION
Check ground connection E5. Refer to Ground Inspection in
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace ground connection.
3.
CHECK ECM GROUND CIRCUIT FOR OPEN
1.
Disconnect ECM harness connector.
2.
Check the continuity between ECM harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace error-detected parts.
4.
CHECK ECM RELAY CONTROL SIGNAL
1.
Reconnect ECM harness connector.
2.
Check the voltage between ECM harness connector and ground as per the following condition.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> GO TO 5.
Fuse No.
Capacity
#52
10 A
#65
5 A
+
−
Continuity
ECM
Connector
Terminal
E59
25
Ground
Existed
26
29
32
+
−
Condition
Voltage
ECM
Connector
Terminal
F80
36
Ground
Ignition switch: OFF
0 V
Ignition switch: ON
Battery voltage
POWER SUPPLY AND GROUND CIRCUIT
ECK-157
< DTC/CIRCUIT DIAGNOSIS >
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5.
CHECK ECM RELAY CONTROL SIGNAL CIRCUIT
1.
Turn ignition OFF.
2.
Disconnect ECM harness connector.
3.
Disconnect IPDM E/R harness connector.
4.
Check the continuity between ECM harness connector and ECM relay harness connector.
5.
Also check harness for short to ground and to power.
Is the inspection result normal?
YES
>> Replace IPDM E/R.
NO
>> Repair or replace error-detected parts.
6.
CHECK ECM BATTERY POWER SUPPLY
1.
Turn ignition switch ON.
2.
Check the voltage between ECM harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> GO TO 7.
7.
CHECK ECM BATTERY POWER SUPPLY CIRCUIT
1.
Turn ignition OFF.
2.
Disconnect ECM harness connector.
3.
Disconnect IPDM E/R harness connector.
4.
Check the continuity between ECM harness connector and IPDM E/R harness connector.
5.
Also check harness for short to ground and to power.
Is the inspection result normal?
YES
>> Replace IPDM E/R.
NO
>> Repair or replace error-detected parts.
8.
CHECK ECM IGNITION POWER SUPPLY
1.
Turn ignition ON.
2.
Check the voltage between ECM harness connector and ground.
+
−
Continuity
ECM
IPDM E/R
Connector
Terminal
Connector
Terminal
F80
36
F89
77
Existed
+
−
Voltage
ECM
Connector
Terminal
F80
93
Ground
Battery voltage
94
+
−
Continuity
ECM
IPDM E/R
Connector
Terminal
Connector
Terminal
F80
93
F90
103
Existed
94
96
ECK-158
< DTC/CIRCUIT DIAGNOSIS >
[K9K]
POWER SUPPLY AND GROUND CIRCUIT
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-41, "Intermittent Incident"
.
NO
>> Perform trouble diagnosis for ignition power supply circuit.
+
−
Voltage
ECM
Connector
Terminal
E59
16
Ground
Battery voltage
U0019 LIN BUS OFF ERROR
ECK-159
< DTC/CIRCUIT DIAGNOSIS >
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U0019 LIN BUS OFF ERROR
DTC Logic
INFOID:0000000010434146
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON and wait at least 3 seconds.
2.
Check DTC.
Is DTC detected?
YES
>> Proceed to
ECK-159, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010434147
1.
CHECK LIN COMMUNICATION CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector and alternator harness connector.
3.
Check the continuity between ECM harness connector and alternator harness connector.
4.
Also check harness for short to power and short to ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace error-detected parts.
2.
REPLACE ALTERNATOR
1.
Replace alternator.
2.
Erase DTC.
3.
Perform DTC confirmation procedure again. Refer to
Is DTC detected again?
YES
>> Replace ECM.
NO
>> INSPECTION END
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
U0019
—
(Low speed can communication bus)
ECM detects LIN communication er-
ror.
• Harness or connectors
(LIN communication circuit is
open or shorted.)
• Generator
• ECM
+
−
Continuity
ECM
Alternator
Connector
Terminal
Connector
Terminal
F81
141
F54
2
Existed
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