Nissan Qashqai J11. Manual — part 502
EC9-164
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
POWER SUPPLY AND GROUND CIRCUIT
NO
>> Repair or replace error-detected parts.
5.
CHECK ECM POWER SUPPLY (INGNITION POWER SUPPLY)
Check the voltage between IPDM E/R and ground.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> GO TO 6.
6.
CHECK IPDM E/R POWER SUPPLY AND GROUND
Check IPDM E/R power supply and ground. Refer to
.
Is the inspection result normal?
YES
>> Replace IPDM E/R. Refer to
PCS-67, "Removal and Installation"
NO
>> Repair or replace error-detected parts.
7.
CHECK ECM GROUND CIRCUIT FOR OPEN
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check the continuity between ECM harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Repair or replace error-detected parts.
8.
CHECK ECM POWER SUPPLY CIRCUIT
1.
Disconnect IPDM E/R harness connector.
2.
Check the continuity between ECM harness connector and IPDM E/R harness connector.
3.
Also check harness for short to ground.
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Repair or replace error-detected parts.
9.
CHECK INTERMITTENT INCIDENT
Check intermittent incident. Refer to
GI-41, "Intermittent Incident"
.
Is the inspection result normal?
+
−
Voltage
IPDM E/R
Connector
Terminal
E38
19
Ground
Battery voltage
+
−
Continuity
ECM
Connector
Terminal
E58
25
Ground
Existed
29
32
+
−
Continuity
ECM
ECM relay
Connector
Terminal
Connector
Terminal
E58
16
E38
19
Existed
28
F90
105
F82
96
108
POWER SUPPLY AND GROUND CIRCUIT
EC9-165
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
C
D
E
F
G
H
I
J
K
L
M
A
EC9
N
P
O
YES
>> INSPECTION END
NO
>> Repair or replace error-detected parts.
EC9-166
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
U0111 LIN COMMUNICATION
U0111 LIN COMMUNICATION
DTC Logic
INFOID:0000000010499280
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
EC9-166, "Diagnosis Procedure"
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010828197
1.
CHECK LIN COMMUNICATION CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector and alternator harness connector.
3.
Disconnect active grille shutter harness connector and DC/DC conveter harness connector.
4.
Check the continuity between ECM harness connector and alternator harness connector.
5.
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.
CHECK ALTERNATOR
Check alternator. Refer to
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace alternator. Refer to
CHG-31, "R9M : Removal and Installation"
.
3.
CHECK DTC
1.
Erase DTC.
2.
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
U0111
LOST COMMUNICATION WITH BAT-
TERY ENERGY FROM LIN
(Lost communication with battery energy
control module “A”)
• 1.DEF: NO BUS SIGNAL
• 2.DEF: COMPONENT PROTECTION
TIME-OUT
ECM cannot communication with alter-
nator via LIN communication.
• Alternator
• Harness and connectors
+
−
Continuity
ECM
Alternator
Connector
Terminal
Connector
Terminal
F82
68
F54
2
Existed
U0121 CAN COMMUNICATION
EC9-167
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
C
D
E
F
G
H
I
J
K
L
M
A
EC9
N
P
O
U0121 CAN COMMUNICATION
DTC Logic
INFOID:0000000010309054
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
>>
EC9-167, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010309055
1.
CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
Check DTC with ABS actuator and electric unit (control unit). Refer to
.
Is DTC detected?
YES
>> Check intermittent incident. Refer to
GI-41, "Intermittent Incident"
.
NO
>> Perform trouble shooting relevant to DTC indicated.
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
U0121
MLTIPLXD TRACTION CN-
TRL CONN
[Lost communication with anti-
lock brake system (ABS) con-
trol Module]
• 1.DEF: INVALID SOURCE
COMPUTER MULTIPLEX
SIGNALS
When ECM is not transmitting or receiving CAN
communication signal between ABS actuator and
electric unit (control unit).
ABS actuator and electric unit
(control unit)
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