Nissan Juke Service and Repair Manual : U0073 communication bus A off

Description

CAN (Controller Area Network) is a serial communication line for real-time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent malfunction detection ability.

Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independently). In CAN communication, control units are connected with 2 communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only.

DTC Logic

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE


DTC CONFIRMATION PROCEDURE

1.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.

2.PERFORM DTC CONFIRMATION PROCEDURE

1. Start the engine and wait for at least 5 seconds.With CONSULT-III


1. Start the engine and wait for at least 5 seconds.

2. Check the DTC.

Is “U0073” detected? YES >> Go to TM-384, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

For the diagnosis procedure, refer to LAN-17, "Trouble Diagnosis Flow Chart".

    U0100 lost communication (ECM A)
    Description CAN (Controller Area Network) is a serial communication line for real-time application. It is an on-vehicle multiplex communication line with high data communication speed and excellen ...

    Other materials:

    Power generation voltage variable control system operation inspection
    Inspection Procedure CAUTION: When performing this inspection, always use a charged battery that has completed the battery inspection. (When the charging rate of the battery is low, the response speed of the voltage change will become slow. This can cause an incorrect inspection.) 1.CHECK ...

    Approaching Vehicle Sound for Pedestrians (VSP) system
    The Approaching Vehicle Sound for Pedestrians (VSP) system is a sophisticated safety feature designed to enhance awareness for those around you. Because the electric powertrain of the Nissan Leaf is exceptionally quiet, this system generates an audible sound signature to alert ...

    P1612 chain of ECM-IMMU
    DTC Logic DTC DETECTION LOGIC NOTE: • If DTC P1612 is displayed with DTC U1000 (for BCM), first perform the trouble diagnosis for DTC U1000. Refer to BCS-153, "DTC Logic". • If DTC P1612 is displayed with DTC U1010 (for BCM), first perform the trouble diagnosis for DTC U1010 ...