Nissan Qashqai J11. Manual — part 504
EC9-172
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
U0315 CAN COMMUNICATION [ABS ACTUATOR AND ELECTRIC UNIT (CON-
TROL UNIT)]
U0315 CAN COMMUNICATION [ABS ACTUATOR AND ELECTRIC UNIT
(CONTROL UNIT)]
DTC Logic
INFOID:0000000010499284
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DIAGNOSIS PROCEDURE
NOTE:
DTC U0315 can not duplicate.
>> Proceed to
EC9-172, "Diagnosis Procedure"
.
Diagnosis Procedure
INFOID:0000000010499285
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: ALIVE COUNTER INCOR-
RECT
• 4.DEF: CIRCUIT QUANTITY NOT
PLAUSIBLE
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
EC9-173
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
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EC9
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U0415 CAN COMMUNICATION
DTC Logic
INFOID:0000000010309060
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DIAGNOSIS PROCEDURE
NOTE:
DTC U0415 can not duplicate.
>> Proceed to
EC9-173, "Diagnosis Procedure"
.
Diagnosis Procedure
INFOID:0000000010309061
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 CN-
TRL CONN
[Invalid data received from
anti-lock brake system (ABS)
control module]
• 1.DEF: IMPLAUSIBLE SIG-
NAL
• 2.DEF: INVALID SOURCE
COMPUTER MULTIPLEX
SIGNALS
ECM receives invalid data sent from ABS actuator
and electric unit (control unit).
ABS actuator and electric unit
(control unit)
EC9-174
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
B1900 DC/DC CONVERTER
B1900 DC/DC CONVERTER
DTC Logic
INFOID:0000000010309073
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 10 seconds or more to start this procedure.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE-1
1.
Turn ignition switch ON and wait at least 3 seconds.
2.
Check DTC.
Is DTC detected?
YES
>> Proceed to
EC9-174, "Diagnosis Procedure"
.
NO
>> GO TO 3.
3.
PERFORM DTC CONFIRMATION PROCEDURE-2
With CONSULT
1.
Start the engine and warm it up to normal operating temperature.
2.
Press start/stop OFF switch and check that the switch indicator is ON.
3.
Select “AUTO STOP START” in “ACTIVE TEST” mode of “ENGINE” using CONSULT.
4.
Touch “START” and operate stop/start system. (engine stop.)
5.
Touch “CANCEL” and restart the engine.
6.
Check DTC.
Without CONSULT
1.
Activate stop/start system. Refer to
EC9-39, "STOP/START SYSTEM : System Description (M/T models)"
EC9-47, "STOP/START SYSTEM : System Description (CVT models)"
(CVT models).
CAUTION:
Always drive vehicle at a safe speed.
2.
Restart the engine.
3.
Check DTC.
Is DTC detected?
YES
>> Proceed to
EC9-174, "Diagnosis Procedure"
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010309074
1.
CHECK FUSE
1.
Turn ignition switch OFF.
2.
Check that the following fuse is not fusing.
Is the fuse fusing?
DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
B1900
—
(—)
DC/DC converter detects power supply
input 1 is 5.0 V or less and difference
between power supply input 1 and pow-
er supply input 2 is 4.0 V or more for 3
seconds.
• Harness and connectors
(DC/DC converter power supply input 1 cir-
cuit is open or shorted.)
• DC/DC converter
Fuse No.
Capacity
F/L-O
30 A
B1900 DC/DC CONVERTER
EC9-175
< DTC/CIRCUIT DIAGNOSIS >
[R9M]
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EC9
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YES
>> Replace the fuse after repairing the applicable circuit.
NO
>> GO TO 2.
2.
CHECK DC/DC CONVERTER POWER SUPPLY INPUT 1
1.
Disconnect DC/DC converter harness connector.
2.
Check the voltage between DC/DC converter harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 3.
3.
CHECK DC/DC CONVERTER POWER SUPPLY INPUT 1 CIRCUIT
1.
Disconnect battery negative terminal.
2.
Check the continuity between DC/DC converter harness connector and fuse.
Is the inspection result normal?
YES
>> Perform the trouble diagnosis for power supply circuit.
NO
>> Repair or replace error-detected parts.
4.
CHECK INTERMITTENT INCIDENT
Perform intermittent incident. Refer to
GI-41, "Intermittent Incident"
.
Is the inspection result normal?
YES
>> Replace DC/DC converter. Refer to
EC9-408, "Removal and Installation"
.
NO
>> Repair or replace error-detected parts.
+
−
Voltage
DC/DC converter
Connector
Terminal
M23
1
Ground
Battery voltage
+
−
Continuity
DC/DC converter
Fuse No.
Connector
Terminal
M23
1
F/L-O
Existed
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