Nissan Qashqai J11. Manual — part 401
ECK-164
< DTC/CIRCUIT DIAGNOSIS >
[K9K]
U0299 LOST COMMUNICATION (DC/DC CONVERTER)
U0299 LOST COMMUNICATION (DC/DC CONVERTER)
DTC Logic
INFOID:0000000010434244
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If the other DTC Confirmation Procedure is performed right before this procedure, the ignition switch must be
turned OFF and wait for 1 minute or more to start this procedure.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE-1
1.
Turn ignition switch ON and wait at least 10 seconds.
2.
Check DTC.
Is DTC detected?
YES
>> Proceed to
ECK-164, "Diagnosis Procedure"
NO
>> GO TO 3.
3.
PERFORM DTC CONFIRMATION PROCEDURE-2
1.
Start the engine and let it idle for at least 5 minutes.
2.
Check DTC.
Is DTC detected?
YES
>> Proceed to
ECK-164, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010434245
1.
CHECK ENGINE COMMUNICATION LINE
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Disconnect DC/DC converter harness connector, alternator harness connector, and active grille shutter
harness connector.
4.
Check the continuity between ECM harness connector and DC/DC converter harness connector.
5.
Also check harness for short to ground and to power.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace error-detected parts.
2.
CHECK INTERMITTENT INCIDENT
Perform intermittent incident. Refer to
GI-41, "Intermittent Incident"
Is the inspection result normal?
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
U0299
COMMUNICATION ERROR (LOST)
(Lost communication with DC to DC con-
verter control module “B”)
• ECM receives an abnormality signal
sent from DC/DC converter.
• ECM is not receiving LIN communica-
tion signal sent from DC/DC converter.
• DC/DC converter
• Harness and connectors
(LIN communication line)
+
−
Continuity
ECM
DC/DC converter
Connector
Terminal
Connector
Terminal
F81
141
M22
7
Existed
U0299 LOST COMMUNICATION (DC/DC CONVERTER)
ECK-165
< DTC/CIRCUIT DIAGNOSIS >
[K9K]
C
D
E
F
G
H
I
J
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M
A
ECK
N
P
O
YES
>> Replace DC/DC converter. Refer to
ECK-402, "Removal and Installation"
.
NO
>> Repair or replace error-detected parts.
ECK-166
< DTC/CIRCUIT DIAGNOSIS >
[K9K]
U0315 CAN COMMUNICATION [ABS ACTUATOR AND ELECTRIC UNIT (CON-
TROL UNIT)]
U0315 CAN COMMUNICATION [ABS ACTUATOR AND ELECTRIC UNIT
(CONTROL UNIT)]
DTC Logic
INFOID:0000000010434246
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-166, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010434247
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
U0315
VEHICLE SPEED
(Software incompatibility with anti-lock
brake system control module)
• 1.DEF: INVALID SERIAL DATA RE-
CEIVED
• 2.DEF: INVALID SOURCE COMPUT-
ER MULTIPLEX SIGNALS
• 3.DEF: CIRCUIT QUANTITY NOT
PLAUSIBLE
• 4.DEF: INVALID SOURCE COMPUT-
ER MULTIPLEX SIGNALS
ECM receives invalid signal of vehicle
speed sent from ABS actuator and elec-
tric unit (control unit).
ABS actuator and electric unit
(control unit)
U0415 CAN COMMUNICATION
ECK-167
< DTC/CIRCUIT DIAGNOSIS >
[K9K]
C
D
E
F
G
H
I
J
K
L
M
A
ECK
N
P
O
U0415 CAN COMMUNICATION
DTC Logic
INFOID:0000000010289717
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DIAGNOSIS PROCEDURE
NOTE:
DTC U0415 can not duplicate.
>> Proceed to
ECK-167, "Diagnosis Procedure"
Diagnosis Procedure
INFOID:0000000010289718
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
U0415
MLTIPLXD TRACTION CNTRL CONN
[Invalid data received from anti-lock
brake system (ABS) control module]
• 1.DEF: IMPLAUSIBLE SIGNAL
• 2.DEF: INVALID SOURCE COMPUT-
ER MULTIPLEX SIGNALS
ECM receives invalid data sent from ABS
actuator and electric unit (control unit).
ABS actuator and electric unit
(control unit)
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