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Home >> Toyota >> 2007 >> Matrix Base, Standard >> Repair and Diagnosis >> Brakes >> Traction Control >> Brakes - Abs >> Vehicle Stability Control System >> DTC C1249/49 Open in Stop Light Switch Circuit >> Inspection Procedure

Inspection Procedure

NOTE: When replacing the ABS and TRACTION actuator assembly, perform zero point calibration (See CALIBRATION  ).
  1. CHECK STOP LIGHT SWITCH OPERATION 
    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 light switch function is normal. 

      HINT:

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

    NG: Go to step  3

    OK : Go to Next Step 

  2. INSPECT SKID CONTROL ECU (STP TERMINAL) 
    1. Disconnect the skid control ECU connector.
      Fig 1: Identifying Skid Control ECU Connector Terminals
      G05194918Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value(s) in the table below.

      Standard voltage 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection 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

    NG: Go to step  4

    OK : REPLACE ABS AND TRACTION ACTUATOR ASSEMBLY 

  3. INSPECT STOP LIGHT SWITCH 
    Fig 2: Inspecting Stop Light Switch
    G05194921Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the stop light switch connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      1 - 2 Switch pin free Below 1 Ω
      1 - 2 Switch pin pushed 10 kΩ or higher

    NG: REPLACE STOP LIGHT SWITCH 

    OK : Go to Next Step 

  4. CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH - SKID CONTROL ECU) 
    1. Disconnect the stop light switch connector and skid control ECU connector.
      Fig 3: Identifying Stop Light Switch Connector And Skid Control ECU Connector Terminals
      G05235278Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Specified Condition
      S1-27 (STP) - S7-1 (STP) Below 1 Ω
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Specified Condition
      S1-27 (STP) - Body ground 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK : REPLACE ABS AND TRACTION ACTUATOR ASSEMBLY 

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