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Inspection Procedure

WARNING: This page is about a different car, the 2008 Toyota Camry Solara. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: When replacing the brake actuator assembly, perform zero point calibration (See CALIBRATION  ).
  1. INSPECT STOP FUSE 
    1. Remove the STOP fuse from the main body ECU (driver side junction block).
      2. Fig 1: Identifying Stop Fuse
      G04978066Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TERMINALS RESISTANCE CHART

      Tester Connection Condition Specified Condition
      STOP (15 A) fuse Always Below 1 Ω

    NG: REPLACE STOP FUSE 

    OK: Go to Next Step 

  2. CHECK STOP LIGHT OPERATION 
    1. Install the STOP fuse.
    2. 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 OPERATION CHART

    Condition Illumination Condition
    Brake pedal depressed ON
    Brake pedal released OFF

    NG:  Go to step  7

    OK: Go to Next Step 

  3. INSPECT SKID CONTROL ECU (STP TERMINAL) 
    1. Disconnect the skid control ECU connector.
      2. Fig 2: Identifying Terminals Of S1 Skid Control ECU Connector
      G05131021Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value(s) in the table below.

      Standard voltage 

      TERMINALS VOLTAGE CHART

      Tester Connection Condition Specified Condition
      S1-27 (STP) - Body ground Stop light switch ON (Brake pedal depressed) 8 to 14 V
      S1-27 (STP) - Body ground Stop light switch OFF (Brake pedal released) Below 1.5 V

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (STP CIRCUIT) 

    OK: Go to Next Step 

  4. INSPECT SKID CONTROL ECU (IG1 TERMINAL) 
    1. Turn the ignition switch to the ON position.
    2. Measure the voltage according to the value(s) in the table below.

      Standard voltage 

      TERMINALS VOLTAGE CHART

      Tester Connection Condition Specified Condition
      S1-46(IG1) - Body ground Ignition switch ON 10 to 14 V
      Fig 3: Identifying Terminals Of S1 Skid Control ECU Connector
      G05131014Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (IG1 CIRCUIT) 

    OK: Go to Next Step 

  5. INSPECT SKID CONTROL ECU (GND TERMINAL) 
    1. Turn the ignition switch off.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TERMINALS RESISTANCE CHART

      Tester Connection Condition Specified Condition
      S1-32 (GND1) - Body ground Always Below 1 Ω
      S1-1 (GND2) - Body ground Always Below 1 Ω
      Fig 4: Identifying Terminals Of S1 Skid Control ECU Connector
      G05130999Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (GND CIRCUIT) 

    OK: Go to Next Step 

  6. RECONFIRM DTC 
    1. Reconnect the skid control ECU connector.
    2. Clear the DTC (See DTC CHECK / CLEAR  ).
    3. Start the engine.
    4. Depress the brake pedal several times to test the stop light circuit.
    5. Check if the same DTC is recorded (See DTC CHECK / CLEAR  ).

      Result 

      RESULT CHART

      Condition Proceed to
      DTC (C1249/49) is not output A
      DTC (C1249/49) is output B

      HINT:

      If troubleshooting has been carried out according to the Problem Symptoms Table, refer back to the table and proceed to the next step (See PROBLEM SYMPTOMS TABLE  ).

    B : REPLACE BRAKE ACTUATOR ASSEMBLY 

    A : CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION) 

  7. INSPECT STOP LIGHT SWITCH (POWER SOURCE TERMINAL) 
    1. Disconnect the stop light switch connector.
      2. Fig 5: Identifying Terminals Of Stop Light Switch Connector
      G05131024Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value(s) in the table below.

      Standard voltage 

      TERMINALS VOLTAGE CHART

      Tester Connection Condition Specified Condition
      S12-2 - Body ground Always 10 to 14 V

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) 

    OK: Go to Next Step 

  8. INSPECT STOP LIGHT SWITCH 
    1. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TERMINALS RESISTANCE CHART

      Tester Connection Condition Specified Condition
      1-2 Switch pin free Below 1 Ω
      1-2 Switch pin pushed in 10 kΩ or higher
      Fig 6: Identifying Stop Light Switch
      G05131025Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE STOP LIGHT SWITCH 

    OK: Go to Next Step 

  9. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - STOP LIGHT SWITCH) 
    1. Disconnect the skid control ECU connector.
      2. Fig 7: Identifying Terminals Of S1 Skid Control ECU And Stop Light Switch Connectors
      G05131026Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TERMINALS RESISTANCE CHART

      Tester Connection Condition Specified Condition
      S1-27(STP) - S12-1 Always Below 1 Ω
      S1-27 (STP) - Body ground Always 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to Next Step 

  10. RECONFIRM DTC 
    1. Reconnect the skid control ECU connector and the stop light switch connector.
    2. Clear the DTC (See DTC CHECK / CLEAR  ).
    3. Start the engine.
    4. Depress the brake pedal several times to test the stop light circuit.
    5. Check if the same DTC is recorded (See DTC CHECK / CLEAR  ).

      Result 

      RESULT CHART

      Condition Proceed to
      DTC (C1249/49) is not output A
      DTC (C1249/49) is output B

      HINT:

      If troubleshooting has been carried out according to the Problem Symptoms Table, refer back to the table and proceed to the next step (See PROBLEM SYMPTOMS TABLE  ).

    B : REPLACE BRAKE ACTUATOR ASSEMBLY 

    A : INSPECT LIGHTING SYSTEM (STOP LIGHT CIRCUIT) 

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