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. Check output value of master cylinder pressure sensor. 

   PREPARATION: 

   1. Connect the hand-held tester to the DLC3.
   2. Turn the ignition switch ON and push the hand-held tester main switch ON.
   3. Select the DATA LIST mode on the hand-held tester.

   CHECK: 

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

   OK: 

   Brake fluid pressure value should change. 

   1. OK: Replace brake actuator assembly. 
      NOTE: When replacing the brake actuator assembly, perform the zero point calibration (see PRE-CHECK ).
   2. NG: Go To Next Step 
2. Check whether or not ECU terminal STP input voltage changes when stop light switch comes on and off. 
   1. NO: Check stop light switch circuit (See  PROBLEM SYMPTOMS TABLE  ). 
   2. YES: If same code is still output after DTC is deleted, check contact condition of each connection. If connections are normal, ECU may be defective. 
   NOTE: When replacing the brake actuator assembly, perform the zero point calibration (see PRE-CHECK ).