Nissan Juke Service and Repair Manual : U0140 lost communication (BCM)

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 U0140 detected? YES >> Go to TM-392, "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 ...

    U0141 lost communication (BCM 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:

    P1726 throttle control signal
    Description Electric throttle control actuator consists of throttle control motor, accelerator pedal position sensor, throttle position sensor etc. The actuator sends a signal to the ECM, and ECM sends the signal to TCM with CAN communication. DTC Logic DTC DETECTION LOGIC DTC CONFIRMATI ...

    System
    Front wiper and washer system (with light & rain sensor) FRONT WIPER AND WASHER SYSTEM (WITH LIGHT & RAIN SENSOR) : System Diagram FRONT WIPER AND WASHER SYSTEM (WITH LIGHT & RAIN SENSOR) : System Description OUTLINE The front wiper is controlled by each function of BCM and IPDM ...

    Cooling fan
    Exploded View 1. Fan motor 2. Fan shroud 3. Cooling fan A. Apply on fan motor shaft : Nm (kg-m, in-lb) : Apply genuine high strength thread locking sealant or equivalent. Removal and Installation REMOVAL 1. Drain engine coolant. Refer to CO-11, "Draining". CAUTION: Pe ...