Nissan Altima 2007-2012 Service Manual: ABS branch line circuit

Diagnosis Procedure

INSPECTION 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 ABS actuator and electric unit (control unit) 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 ABS actuator and electric unit (control unit).

2. Check the resistance between the ABS actuator and electric unit (control unit) harness connector terminals.

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

NO >> Repair the ABS actuator and electric unit (control unit) branch line.

3.CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit). Refer to the following.

• Models with ABS: BRC-41, "Wiring Diagram - Coupe" or BRC-46, "Wiring Diagram - Sedan" • Models with TCS: BRC-109, "Wiring Diagram - Coupe" or BRC-115, "Wiring Diagram - Sedan" • Models with VDC: BRC-207, "Wiring Diagram - Coupe" or BRC-215, "Wiring Diagram - Sedan" Is the inspection result normal? YES (Present error)>>Replace the ABS actuator and electric unit (control unit). Refer to the following.

• Models with ABS: BRC-66, "Exploded View" • Models with TCS: BRC-137, "Exploded View" • Models with VDC: BRC-239, "Exploded View" YES (Past error)>>Error was detected in the ABS actuator and electric unit (control unit) branch line.

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

    M&A branch line circuit
    Diagnosis Procedure INSPECTION 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 ...

    TCM branch line circuit
    Diagnosis Procedure INSPECTION PROCEDURE 1.CHECK CONNECTOR 1. Turn the ignition switch OFF. 2. Disconnect the battery cable from the negative terminal. 3. Check the following terminals and co ...

    Other materials:

    Control linkage
    Exploded View 1. Control lever knob 2. Control lever 3. Control device assembly 4. Retainer grommet 5. Select cable 6. Shift cable 7. Lock plate 8. Cable bracket Removal and Installation REMOVAL 1. Shift control lever to the neutral position. 2. Remove the air filter assembly. Refer ...

    Battery
    ● Keep the battery surface clean and dry. Clean the battery with a solution of baking soda and water. ● Make certain the terminal connections are clean and securely tightened. ● If the vehicle is not to be used for 30 days or longer, disconnect the negative (-) battery ter ...

    Normal operating condition
    Description The majority of the audio concerns are the result of outside causes (bad CD, electromagnetic interference, etc.). NOISE The following noise results from variations in field strength, such as fading noise and multi-path noise, or external noise from trains and other sources. It i ...