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:

    Control cable
    Exploded View 1. Control cable 2. Lock plate 3. Transaxle assembly 4. Bracket A 5. Bracket B 6. CVT shift selector assembly A: Manual lever B: Grommet : Nm (kg-m, ft-lb) : Nm (kg-m, in-lb) Removal and Installation INSTALLATION CAUTION: Always apply the parking brake before per ...

    General Precautions
    WARNING: When replacing fuel line parts, be sure to observe the following. Put a CAUTION: FLAMMABLE sign in the workshop. Be sure to work in a well ventilated area and furnish workshop with a CO2 fire extinguisher. Never smoke while servicing fuel system. Keep open flames and sparks ...

    Speed limiter main switch
    Component Function Check 1.CHECK SPEED LIMITER MAIN SWITCH FUNCTION 1. Turn ignition switch ON. 2. Check the voltage between ECM harness connector terminals under the following conditions Is the inspection result normal? YES >> INSPECTION END NO >> Go to EC-1020, "Diagnosi ...