2012 Toyota Matrix Base, Standard TransFACTORY OEM SERVICE PROCEDURE

Lin Communication System: Precaution: Precaution

WARNING: This page is about a different car, the 2012 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
  1. PRECAUTIONS WHEN USING TECHSTREAM 
    1. When using the Techstream with the engine switch off to troubleshoot: Connect the Techstream to the vehicle, and turn the courtesy light switch on and off at 1.5-second intervals until communication between the Techstream and the vehicle begins.
    2. After all DTCs are cleared, check if the trouble occurs again 6 seconds after the engine switch is turned on (IG).
  2. PRECAUTIONS WHEN WORKING ON ELECTRIC STEERING LOCK 
    1. If the steering lock ECU (steering lock actuator assembly) is replaced, open and close the driver door. The engine may not start until this is performed.

      HINT: 

      Opening and closing the driver door causes the steering lock ECU (steering lock actuator assembly) to memorize the correct steering lock bar position.

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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.