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Home >> Toyota >> 2005 >> Camry Base, Automatic >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> Brakes - Abs With EBD (BOSCH Made) - Diagnostics >> DTC C1249/58: Stop Light Switch Circuit >> Inspection Procedure

Inspection Procedure

  1. INSPECT STOP LAMP SWITCH ASSY 
    1. Check that the stop lamp comes on when the brake pedal is depressed and goes off when the brake pedal is released.

    HINT:

    Check the stop lamp bulb as it may have burnt out.

    Standard: Stop lamp switch function is normal. 

    1. NG: Go to step   4 

    OK: Go to Next Step. 

  2. INSPECT SKID CONTROL ECU TERMINAL VOLTAGE (STP TERMINAL) 
    1. Disconnect the skid control ECU connector.
    2. Measure the voltage according to the value(s) in the table below.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION (1 OF 4)

      Tester Connection Switch Condition Specified Condition
      S1 -20 (STP) - Body ground Brake pedal depressed 8 to 14 V
      S1 -20 (STP) - Body ground Brake pedal released Below 4.0 V
      Fig 1: Inspecting Skid Control ECU Terminal Voltage (STP Terminal)
      G02633538Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. OK: REPLACE BRAKE ACTUATOR ASSY (See  REPLACEMENT  ) 

    NG: Go to Next Step. 

  3. CHECK HARNESS AND CONNECTOR (STOP LAMP SWITCH - SKID CONTROL ECU) 
    1. Disconnect the stop lamp switch connector and skid control ECU connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION (2 OF 4)

      Tester Connection Specified Condition
      S1 -20 (STP) - S14- 1 (STP) Below 1Ω
      Fig 2: Checking Harness And Connector (Stop Lamp Switch - Skid Control ECU)
      G02633539Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (See  PROBLEM SYMPTOMS TABLE   ) 

  4. INSPECT STOP LAMP SWITCH ASSY 
    1. Disconnect the stop lamp switch assy connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION (3 OF 4)

      Switch Condition Tester Connection Specified Condition
      Switch pin free 1 - 2 Below 1Ω
      Switch pin pushed in 1 - 2 10 kΩ or higher
      Fig 3: Inspecting Stop Lamp Switch Assembly
      G02633540Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE STOP LAMP SWITCH ASSY 

    OK: Go to Next Step. 

  5. CHECK HARNESS AND CONNECTOR (STOP LAMP CIRCUIT) 
    1. Disconnect the stop lamp switch connector and skid control ECU connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION (4 OF 4)

      Tester Connection Specified Condition
      S1 -20 (STP) - S14-1 (STP) Below 1Ω
      Fig 4: Checking Harness And Connector (Stop Lamp Circuit)
      G02633541Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. OK: REPLACE BRAKE ACTUATOR ASSY (See  REPLACEMENT  ) 

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

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