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Home >> Nissan-Datsun >> 2003 >> Frontier Base, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 190 (Automatic Speed Control Device) >> Automatic Speed Control Device (ASCD) >> Trouble Diagnoses >> ASCD Brake/Stop Lamp Switch Check >> 2. Check Stop Lamp Switch Circuit

2. Check Stop Lamp Switch Circuit

WARNING: This page is about a different car, the 2004 Nissan Frontier. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect ASCD control unit harness connector.
  2. Check voltage between ASCD control unit harness connector M119 terminal 23 (BR/R) and ground.
    Fig 1: Checking Stop Lamp Switch Circuit
    G00774617Courtesy of NISSAN MOTOR CO., U.S.A.

    Refer to WIRING DIAGRAMS - ASCD  .

OK or NG 

  1. OK: ASCD brake/stop lamp switch is OK.
  2. NG: Check the following.
    • 15A fuse (2-door models) or 20A fuse (4-door models) [No. 22, located in the fuse block (J/B)]
    • Harness for open or short between ASCD control unit and stop lamp switch
    • Harness for open or short between fuse and stop lamp switch
    • Stop lamp switch

      Refer to ASCD BRAKE/STOP LAMP SWITCH CHECK  .

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