2009 Toyota Matrix Base, StandardFACTORY OEM SERVICE PROCEDURE

Inspection Procedure

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

      Result 

      DTC OUTPUT RESULT

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

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

      A: Go to next step 

  2. PERFORM ACTIVE TEST USING TECHSTREAM (VSC OFF INDICATOR LIGHT) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Select Active Test mode on the Techstream (See DATA LIST / ACTIVE TEST  ).

      ABS/VSC/TRAC 

      ABS/VSC/TRAC ACTIVE TEST REFERENCE CHART

      Tester Display Test Part Control Range Diagnostic Note
      VSC warning Lamp VSC OFF indicator light Indicator light ON/OFF Observe combination meter
    4. Check that the VSC OFF indicator light turns on or off in accordance with the Techstream operation.

      OK: 

      The VSC OFF indicator light turns on or off in accordance with the Techstream operation  .

      HINT:

      If troubleshooting has been carried out according to the Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part (See PROBLEM SYMPTOMS TABLE  ).

      NG: Go to step 3 

      OK: REPLACE BRAKE ACTUATOR ASSEMBLY  (See REMOVAL  )

  3. INSPECT COMBINATION METER ASSEMBLY 
    1. Turn the ignition switch off.
    2. Perform the Active Test of the combination meter (meter CPU) using the Techstream (See DATA LIST / ACTIVE TEST ).
    3. Check the combination meter.

      OK: 

      The VSC OFF indicator light turns on or off in accordance with the Techstream operation  .

      HINT:

      If troubleshooting has been carried out according to the Problem Symptoms Table, refer back to the table and proceed to the next step (See PROBLEM SYMPTOMS TABLE  ).

      NG: REPLACE COMBINATION METER ASSEMBLY  (See COMBINATION METER )

      OK: REPLACE BRAKE ACTUATOR ASSEMBLY  (See REMOVAL  )

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.