Diagnosis & Testing: Pre-Check

2004 Toyota Matrix XR, FWD, StandardSECTION Pre-Check
WARNING: This page is about a different car, the 2002 Lexus RX 300. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: If skid control ECU stores DTC, ABS warning light, VSC warning light and TRAC OFF indicator light are on. See Fig 1.
  1. Release parking brake pedal.
  2. When ignition switch is turned on, verify ABS warning light, VSC warning light, TRAC OFF indicator light (2WD only) and SLIP indicator light turns on for approximately 3 seconds.
  3. If any indicator check result is not normal, see appropriate component test in SYSTEM TESTINGΒ .
Fig 1: Identifying Warning Lights
G00199492Courtesy of Β© TOYOTA, LICENSE AGREEMENT TMS1002
RENDER: 1.0x

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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.