Nissan Murano: Dtc/circuit Diagnosis / U0122 Lost Communication (vdc)

Nissan Murano (Z52) 2015-2024 Service Manual / Transmission & Driveline / Transaxle & Transmission :: Cvt: Re0f10j / Dtc/circuit Diagnosis / U0122 Lost Communication (vdc)

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-SAFE

Not changed from normal driving

DTC CONFIRMATION PROCEDURE

CHECK DTC PRIORITY

WhenDTC U0122 is displayed together with DTC U0300, diagnose first the DTC U0300.

Is "U0300" detected?

YES>>

Perform diagnosis of DTC U0300. Refer to Diagnosis Procedure.

NO>>

GO TO 2.

PREPARATION BEFORE WORK

If another "DTC CONFIRMATION PROCEDURE" occurs just before, ignition switch OFF and wait for at least 10 seconds, then perform the next test.

>>

GO TO 3.

PERFORM DTC CONFIRMATION PROCEDURE

  1. Ignition switch ON and wait for at least 2 seconds.

  2. Check the DTC.

Is DTC detected?

YES>>

Proceed to Diagnosis Procedure.

NO>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO>>

Confirmation after repair: INSPECTION END

Diagnosis Procedure

For the diagnosis procedure, refer to Trouble Diagnosis Flow Chart.

    U0102 Lost Communication (transfer)

    DTC Description DTC DETECTION LOGICWhen the ignition switch is ON, TCM is unable to receive the CAN communications signal from AWD control unit continuously for 2 seconds or more...

    U0300 Can Communication Data

    DTC Description DTC DETECTION LOGICWhen the ignition switch is ON, the data length transmitted from each control unit is shorter than the specified length and the status continues for 2 seconds or more...

    Other information:

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    Component Function Check DATA MONITOR CONSULT Select “SLIDE PULSE” in “Data Monitor” mode of “AUTO DRIVE POS.”. Check that the function operates normally according to the following conditions: Monitor item Condition Value SLIDE PULSE Seat sliding Operate (forward) Change (decrease) Operate (backward) Change (increase) Release No change Is the inspection result normal? YES>> Inspection End...

    Nissan Murano (Z52) 2015-2024 Owners Manual: NISSAN Advanced Air Bag System (front seats)


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    Categories

    Fuel gauge

    Nissan Murano. Fuel gauge

    The gauge indicates the approximate fuel level in the tank.

    The gauge may move slightly during braking, turning, acceleration, or going up or down hills.

    The gauge needle returns to 0 (Empty) after the ignition switch is placed in the OFF position.

    read more

     
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