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Home >> Toyota >> 2005 >> Camry Base, Automatic >> Repair and Diagnosis >> Brakes >> Traction Control >> Brakes - Abs With EBD & BA & TRAC & VSC (Diagnostics) >> DTC C1249/49: Open Circuit In Stop Light Switch Circuit >> Inspection Procedure

Inspection Procedure

NOTE: When replacing the brake actuator assy, perform zero point calibration (see CALIBRATION  ).
  1. CHECK STOP LAMP SWITCH OPERATION (STOP LAMP SWITCH CIRCUIT) 
    1. Check that the stop light comes on when the brake pedal is depressed and goes off when the brake pedal is released.

      OK: Stop lamp switch function is normal. 

    1. NG: Go to step   5 

    OK: Go to Next Step. 

  2. INSPECT SKID CONTROL ECU TERMINAL VOLTAGE (STP TERMINAL) 
    1. Disconnect the skid control ECU connector S1.
    2. Measure the voltage according to the value (s) in the table below.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION (1 OF 3)

      Tester Connection Switch condition Specified Condition
      S1-27 (STP) - Body ground Brake pedal depressed 8 to 14 V
      S1-27 (STP) - Body ground Brake pedal released Below 1 V
      Fig 1: Inspecting Skid Control ECU Terminal Voltage (STP Terminal)
      G02633705Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: Go to step   4 

    OK: Go to Next Step. 

  3. RECONFIRM DTC 
    1. Clear the DTCs (see DTC CHECK/CLEAR  ).
    2. Turn the ignition switch to the ON position.
    3. Are the same DTCs recorded? (see DTC CHECK/CLEAR  )
    1. NO: END 

      HINT:

      It is suspected that the DTCs output was caused by poor connection of the connector terminal.

    YES: REPLACE BRAKE ACTUATOR ASSY (SEE  REPLACEMENT  ) 

  4. INSPECT STOP LAMP SWITCH ASSY 
    1. Disconnect the stop lamp switch assy connector S14.
    2. Measure the resistance according to the value (s) in the table below.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION (2 OF 3)

      Switch condition Tester connection Specified condition
      Switch pin free 1 - 2 Below 1 Ω
      Switch pin pushed in 1 - 2 10 kΩ or higher
      Fig 2: Inspecting Stop Lamp Switch Assembly
      G02633706Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE STOP LAMP SWITCH ASSY 

    OK: Go to Next Step. 

  5. CHECK HARNESS AND CONNECTOR (STOP LAMP SWITCH - SKID CONTROL ECU) 
    1. Disconnect the stop lamp switch connector S14 and skid control ECU connector S1.
    2. Measure the resistance according to the value (s) in the table below.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION (3 OF 3)

      Tester Connection Specified Condition
      S1-27 (STP1) - S14-1 (STP) Below 1 Ω
      Fig 3: Checking Harness And Connector (Stop Lamp Switch - Skid Control ECU)
      G02633707Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE BRAKE ACTUATOR ASSY (SEE  REPLACEMENT  ) 

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