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Home >> Toyota >> 2008 >> FJ Cruiser RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 233 (Brake Control) >> Vehicle Stability Control System >> DTC C1246/46 Master Cylinder Pressure Sensor Malfunction; DTC C1281/81 Master Cylinder Pressure Sensor Output Malfunction (Test Mode DTC) >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2008 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: When replacing the ABS and TRACTION actuator, perform zero point calibration (see CALIBRATION  ).
  1. READ VALUE OF TECHSTREAM (STOP LIGHT SWITCH) 
    1. Check the Data List for proper functioning of the stop light switch.

      ABS / VSC / TRAC: 

      MEASUREMENT ITEM/RANGE AND DIAGNOSTIC NOTE

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Stop Lamp SW Stop light switch / ON or OFF ON: Brake pedal applied
      OFF: Brake pedal released
      -

      OK: ON (brake pedal is depressed) appears on the screen. 

    NG: CHECK STOP LIGHT SWITCH CIRCUIT 

    OK: Go to next step. 

  2. READ VALUE OF TECHSTREAM (MASTER CYLINDER PRESSURE SENSOR) 
    1. Check the Data List for proper functioning of the master cylinder pressure sensor.

      ABS/VSC/TRAC: 

      MEASUREMENT ITEM/RANGE AND DIAGNOSTIC NOTE

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Master Cylinder Sensor Master cylinder pressure sensor 1 reading / min.: 0 V, max.: 5 V When brake pedal released: 0.3 to 0.9 V -

      OK: When the pedal is depressed, the sensor output voltage increases. 

    NG: REPLACE ABS AND TRACTION ACTUATOR ASSEMBLY 

    OK: Go to next step. 

  3. RECONFIRM DTC 
    1. Clear the DTC (s) (see DTC CHECK / CLEAR  ).
    2. Drive the vehicle at a speed of 30 km/h (18 mph) or more and perform a braking test (decelerate the vehicle by depressing the brake pedal).
    3. Check if the same DTC (s) is recorded (see DTC CHECK / CLEAR  ).

      Result 

      DTC RESULT DESCRIPTION

      Result Proceed to
      DTC is output A
      DTC is not output B

    B: END 

    A: REPLACE ABS AND TRACTION ACTUATOR ASSEMBLY