Inspection 10 Stop Lamp Switch System

Check self-diagnosis results.

Fig 1: Identifying Self-Diagnosis Results

Courtesy of NISSAN MOTOR CO., U.S.A.

Is the above displayed in the self-diagnosis display items?

1. YES: GO TO 2.
2. NO: Inspection End

1. Disconnect the stop lamp switch connector and VDC/TCS/ABS control unit connector and check the terminals for deformation, disconnection, looseness, and so on. If there is an error, repair or replace the terminal.
2. Securely reconnect the connectors.
3. Start engine.
4. Repeat pumping brake pedal carefully several times, then perform self-diagnosis again.

OK or NG 

1. OK: The connector terminal contact is loose, damaged, open or shorted.
2. NG: GO TO 3.

1. Turn ignition switch OFF and disconnect the VDC/TCS/ABS control unit connector.
2. Check the voltage between the VDC/TCS/ABS control unit harness connector terminal 48 (R/W) and the ground.
   1. 48 (R/W) - Ground 
   2. Brake pedal depressed: 
      1. Battery voltage (approx. 12V) 
   3. Brake pedal not depressed: 
      1. Approx. 0V 
      Fig 2: Checking VDC Relay Box Harness Voltage

      Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

1. OK: Connect the connectors and conduct a VDC/TCS/ABS control unit self-diagnosis.
2. NG: Open or short in harness. Repair or replace the harness.