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Home >> Toyota >> 2006 >> 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. 

    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 Fig 1 .

    Standard: 

    SKID CONTROL ECU TERMINAL VOLTAGE (STP TERMINAL)

    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: View Of Skid Control ECU Connector Terminals
    G04390069Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    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  )

    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 step 3 in  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 STOP LAMP SWITCH ASSY  .

    Standard: 

    STOP LAMP SWITCH ASSY

    Switch condition Tester connection Specified condition
    Switch pin free 1 - 2 Below 1
    Switch pin pushed in 1 - 2 10 k or higher
    Fig 2: Identifying Stop Lamp Switch Connector Terminals
    G04390070Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    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 STOP LAMP SWITCH - SKID CONTROL ECU  .

    Standard: 

    STOP LAMP SWITCH - SKID CONTROL ECU

    Tester Connection Specified Condition
    S1-27 (STP1) - S14-1 (STP) Below 1
    Fig 3: Checking Harness And Connector (Stop Lamp Switch - Skid Control ECU)
    G04390071Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE BRAKE ACTUATOR ASSY (See step 3 in  REPLACEMENT  ) 

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