Inspection Procedure

HINT:

Start the inspection from step 1 when using the hand-held tester and start from step  2 when not using the hand-held tester.

1. READ VALUE OF HAND-HELD TESTER (MASTER CYLINDER PRESSURE SENSOR) 
   1. Connect the hand-held tester to the DLC3.
   2. Start the engine.
   3. Select the DATA LIST mode on the hand-held tester.
      Fig 1: Master Cylinder Pressure Sensor Condition Chart

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   4. Check that the brake fluid pressure value of the master cylinder pressure sensor observed in on the hand-held tester changes when the brake pedal is depressed.

   Standard: 

   1. When depressing the brake pedal, the reading on the hand-held tester increases. 
   NOTE: When replacing the Brake Actuator assy, perform zero point calibration (see PRE-CHECK  ).

   OK: Go to step 2 

   NG: REPLACE BRAKE ACTUATOR ASSY 

2. INSPECT SKID CONTROL ECU TERMINAL VOLTAGE (STP TERMINAL) 
   1. Disconnect the skid control ECU connector S1.
      Fig 2: Disconnecting Skid Control ECU (STP Terminal)

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   2. Measure the voltage according to the value(s) in Fig 3 .

      Standard 

      Fig 3: Measuring Voltage Between STP & Body Ground Specifications Chart

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   NOTE: When replacing the Brake Actuator assy, perform zero point calibration (see PRE-CHECK  ).

   NG: CHECK AND REPLACE STOP LIGHT SWITCH CIRCUIT 

   OK: REPLACE BRAKE ACTUATOR ASSY (SEE  REPLACEMENT  )