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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 867 (Anti-Lock Brake System & Traction Control System - Abs/TCS) >> Trouble Diagnoses For Symptoms >> 6. ABS Warning Lamp Does Not Come On When Ignition Switch Is Turned On

6. ABS Warning Lamp Does Not Come On When Ignition Switch Is Turned On

WARNING: This page is about a different car, the 2003 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECTION START 

    Warning lamp circuit inspection.

    1. : GO TO 2.
    Fig 1: Inspecting Warning Lamp Circuit
    G02161692Courtesy of NISSAN MOTOR CO., U.S.A.
  2. CHECK FUSE 

    Check 10A fuse No. 14 for warning lamp. For fuse layout, refer to "POWER SUPPLY ROUTING CIRCUIT ".

    Is fuse OK? 

    1. Yes: GO TO 3
    2. No: If fuse is blown, be sure to eliminate cause of problem before installing new fuse.
  3. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY CIRCUIT 
    1. Install 10A fuse.
    2. Remove solenoid valve relay.
    3. Disconnect ABS actuator and electric unit (control unit) connector.
    4. Check voltage between connector terminal 21 and ground after turning ignition switch ON.

      Does battery voltage exist after turning ignition switch ON? 

      1. Yes: GO TO  5.
      2. No: GO TO 4.
      Fig 2: Checking Voltage Between Connector Terminal 21 And Ground
      G02161693Courtesy of NISSAN MOTOR CO., U.S.A.
  4. CHECK WARNING LAMP INDICATION 

    Disconnect ABS actuator and electric unit (control unit) connector.

    Does the ABS warning lamp activate? 

    1. Yes: GO TO  6.
    2. No: GO TO 5.
    Fig 3: Checking ABS Warning Lamp Indication
    G02161694Courtesy of NISSAN MOTOR CO., U.S.A.
  5. CHECK HARNESS FOR SHORT 
    1. Disconnect ABS actuator and electric unit (control unit) connector
    2. Check voltage between ABS actuator and electric unit (control unit) connector terminal 21 and ground.

      Does battery voltage exist? 

      1. Yes: Check combination meter. Refer to "COMBINATION METERS ".
      2. No: Repair harness and connectors between fuse and ABS actuator and electric unit (control unit) connector terminal 21.
      Fig 4: Checking Voltage Between ABS Actuator And Electric Unit Connector Terminal 21 And Ground
      G02161695Courtesy of NISSAN MOTOR CO., U.S.A.
  6. CHECK HARNESS CONNECTOR 

    Check ABS actuator and electric unit (control unit) pin terminals for damage and the connection of harness connector. Reconnect ABS actuator and electric unit (control unit) harness connector. Then reset.

    1. OK: INSPECTION END. 
    2. NG: Replace ABS actuator and electric unit (control unit). Refer to "REMOVAL AND INSTALLATION ".