Nissan Juke Service and Repair Manual : BCM branch line circuit

Diagnosis Procedure

1.CHECK CONNECTOR

1. Turn the ignition switch OFF.

2. Disconnect the battery cable from the negative terminal.

3. Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal? YES >> GO TO 2.

NO >> Repair the terminal and connector.

2.CHECK HARNESS FOR OPEN CIRCUIT

1. Disconnect the connector of BCM.

2. Check the resistance between the BCM harness connector terminals.

- Models with Intelligent Key system

- Models without Intelligent Key system


- Models without Intelligent Key system

Is the measurement value within the specification?


Is the measurement value within the specification? YES >> GO TO 3.

NO >> Repair the BCM branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the BCM. Refer to the following.

• Models with Intelligent Key system: BCS-87, "Diagnosis Procedure" • Models without Intelligent Key system: BCS-155, "Diagnosis Procedure"

Is the inspection result normal? YES (Present error)>>Replace the BCM. Refer to the following.

• Models with Intelligent Key system: BCS-93, "Removal and Installation" • Models without Intelligent Key system: BCS-161, "Removal and Installation"

YES (Past error)>>Error was detected in the BCM branch line.

NO >> Repair the power supply and the ground circuit.

    PTC branch line circuit
    Diagnosis Procedure 1.CHECK CONNECTOR 1. Turn the ignition switch OFF. 2. Disconnect the battery cable from the negative terminal. 3. Check the terminals and connectors of the PTC heater control u ...

    Can communication circuit
    Diagnosis Procedure 1.CONNECTOR INSPECTION 1. Turn the ignition switch OFF. 2. Disconnect the battery cable from the negative terminal. 3. Disconnect all the unit connectors on CAN communication s ...

    Other materials:

    Microphone signal circuit
    Description Power is supplied from audio unit to microphone. The microphone transmits the sound voice to the audio unit. Diagnosis Procedure 1.CHECK CONTINUITY BETWEEN AUDIO UNIT AND MICROPHONE CIRCUIT 1. Turn ignition switch OFF. 2. Disconnect audio unit connector and microphone connector. ...

    Keyfob ID registration
    Description Perform the following procedure after BCM is replaced or when new keyfob ID is registered NOTE: When registering the keyfob ID, perform only one procedure to simultaneously register both ID (IMMOBILIZER ID and keyfob ID). Work Procedure 1.STEP 1 Close all doors. >> GO ...

    Symptom diagnosis
    Squeak and rattle trouble diagnoses Work Flow CUSTOMER INTERVIEW Interview 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 of the cu ...