Nissan Murano: Dtc/circuit Diagnosis / U0102 Lost Communication (transfer)
DTC Description
DTC DETECTION LOGIC
When the ignition switch is ON, TCM is unable to receive the CAN communications signal from AWD control unit continuously for 2 seconds or more.
| DTC |
CONSULT screen terms
(Trouble diagnosis content) |
DTC detection condition |
| U0102 |
LOST COMM (TRANSFER)
(Lost Communication With Transfer Case Control Module) |
Diagnosis condition |
When the ignition switch is ON |
| Signal |
CAN communication signal |
| Threshold |
TCM is unable to receive the CAN communications signal from AWD control unit |
| Diagnosis delay time |
Continuously for 2 seconds or more |
POSSIBLE CAUSE
FAIL-SAFE
Not changed from normal driving
DTC Confirmation Procedure
PREPARATION BEFORE WORK
If another “DTC CONFIRMATION PROCEDURE” occurs just before, turn ignition switch OFF and wait for at least 10 seconds, then perform the next test.
>>
GO TO 2.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
-
Start the engine and wait for at least 5 seconds.
-
Check the DTC.
Is “U0102” detected?
YES>>
Go to Diagnosis Procedure.
NO-1>>
To check malfunction symptom before repair: Refer to Intermittent Incident.
NO-2>>
Confirmation after repair: INSPECTION END
Diagnosis Procedure
For the diagnosis procedure, refer to DESCRIPTION.
DTC Description
DTC DETECTION LOGICWhen the ignition switch is ON, TCM is unable to receive the CAN communications signal from ECM continuously for 2 seconds or more...
DTC Description
DTC DETECTION LOGIC DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
U0122
LOST COMM (BRAKE C/U)
(Lost Communication With Nissan Murano Vehicle Dynamics Control Module)
Diagnosis condition
When the ignition switch is ON
Signal
CAN communication signal
Threshold
TCM is unable to receive the CAN communications signal from ABS actuator and electric unit (control unit)
Diagnosis delay time
Continuously for 2 seconds or more
POSSIBLE CAUSE
ABS actuator and electric unit (control unit)
Harness or connector (CAN communication line is open or shorted)
FAIL-SAFENot changed from normal drivingDTC CONFIRMATION PROCEDURECHECK DTC PRIORITY
WhenDTC U0122 is displayed together with DTC U0300, diagnose first the DTC U0300...
Other information:
DTC Description
DTC DETECTION LOGIC DTC No.
CONSULT screen terms
(Trouble diagnosis content) DTC detection condition
B1341–16
Head unit
(Audio unit)
[VB–LOW]
Diagnosis condition
When ignition switch is ON.
Signal (terminal)
–
Threshold
–
Diagnosis delay time
30 seconds or more
B1341–17
[VB–HIGH]
Diagnosis condition
When ignition switch is ON...
Work Flow
CUSTOMER INTERVIEWInterview the customer if possible, to determine the conditions that exist when the noise occurs. Use the Diagnostic Worksheet during the interview to document the facts and conditions when the noise occurs and any customer's comments; refer to Diagnostic Worksheet...