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Inspection Procedure

NOTE: When replacing the brake actuator assembly, perform zero point calibration (See CALIBRATION  ).
  1. CHECK CAN COMMUNICATION SYSTEM 
    1. Check if the CAN communication system DTC is output (See DIAGNOSIS SYSTEM ).

      Result 

      RESULT CHART

      Result Proceed to
      DTC not output A
      DTC output B

    B : INSPECT CAN COMMUNICATION SYSTEM  (See HOW TO PROCEED WITH TROUBLESHOOTING )

    A: Go to next step 

  2. INSPECT DLC3 
    1. Turn the ignition switch to ON.
    2. Measure the voltage according to the value(s) in the table below.

      Standard voltage 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Switch Condition Specified Condition
      F16-13 (TC) - F16-4 (CG) Ignition switch ON 11 to 14 V
      Fig 1: Identifying DLC3 Connector Terminal CG And TC
      G05401254Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      RESULT CHART

      Result Proceed to
      NG A
      OK B

    B:  Go to step  5

    A: Go to next step 

  3. CHECK HARNESS AND CONNECTOR (TC of DLC3 - ECM) 
    1. Turn the ignition switch to OFF.
    2. Disconnect the ECM connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      F16-13 (TC) - A21-27 (TC) Always Below 1 Ω
      F16-13 (TC) - Body ground Always 10 kΩ or higher

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 2: Identifying DLC3 Connector Terminal Of TC
    G05401255Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next step 

  4. CHECK HARNESS AND CONNECTOR (CG of DLC3 - BODY GROUND) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      F16-4 (CG) - Body ground Always Below 1 Ω

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 3: Identifying DLC3 Connector Terminal CG And Body Ground
    G05401256Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next step 

  5. CHECK ECM (TC of DLC3 INPUT) 
    1. Turn the ignition switch to OFF.
    2. Reconnect the ECM connector.
    3. Using SST, connect terminals TC and CG of the DLC3.
    4. Turn the ignition switch to ON.
    5. Check that the check engine warning light is blinking.
      Fig 4: Identifying DLC3 Connector Terminal CG And TC
      G05401257Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      RESULT CHART

      Result Proceed to
      Check engine warning light is blinking A
      Check engine warning light is not blinking B

    B : INSPECT SFI SYSTEM  (See HOW TO PROCEED WITH TROUBLESHOOTING )

    A : REPLACE BRAKE ACTUATOR ASSEMBLY  (See REMOVAL  )