2009 Toyota Matrix Base, AutomaticFACTORY OEM SERVICE PROCEDURE

ABS Warning Light Remains ON: Description

The skid control ECU is connected to the combination meter via CAN communication. If any of the following is detected, the ABS warning light remains on:

  • The skid control ECU connector is disconnected from the skid control ECU.
  • There is a malfunction in the skid control ECU internal circuit.
  • There is an open circuit malfunctioning in the harness between the combination meter and the skid control ECU.
  • The ABS control system is malfunctioning.

HINT:

In some cases, the Techstream cannot be used when the skid control ECU is abnormal.

Factory Service Tools

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When to See a Mechanic

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

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