FixVault
Home › Toyota › 2007 › Matrix Base, Standard › Repair and Diagnosis › Brakes › Traction Control › Brakes - Abs › Anti-Lock Brake System › DTC C1249/49 Open in Stop Light Switch Circuit › Inspection Procedure

Inspection Procedure

  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.

      HINT:

      Check the stop light bulb because it may be burnt out.

      OK: Stop light switch function is normal. 

    NG: Go to step  3

    OK : Go to Next Step 

  2. INSPECT SKID CONTROL ECU (STP TERMINAL) 
    1. Disconnect the skid control ECU connector.
    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
      S1-14 (STP) - Body ground Brake pedal is depressed 10 to 14 V
      S1-14 (STP) - Body ground Brake pedal is released Below 1 V

    NG: Go to step  4

    Fig 1: Identifying Skid Control ECU Connector Terminals
    G05194808Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK : REPLACE BRAKE ACTUATOR ASSEMBLY 

  3. INSPECT STOP LIGHT SWITCH 
    Fig 2: Inspecting Stop Light Switch
    G05194809Courtesy 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 

      SWITCH CONDITION TESTER CONNECTION CHART

      Switch Condition Tester Connection Specified Condition
      Switch pin free 1 - 2 1 Ω or less
      Switch pin pushed 1 - 2 10 kΩ or higher (No continuity)

    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 Skid Control ECU And Stop Light Switch Connectors Terminals
      G05235165Courtesy 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
      S1-14 (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
      S1-14 (STP) - Body ground 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK : REPLACE BRAKE ACTUATOR ASSEMBLY 

About FixVault