When not using LEXUS hand-held tester

2004 Toyota Matrix XR, FWD, StandardSECTION When not using LEXUS hand-held tester
WARNING: This page is about a different car, the 2004 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check ENGINE TROUBLESHOOTING (See  DTC P0503: VEHICLE SPEED SENSOR "A" INTERMITTENT/ERRATIC/HIGH  ). 
    1. OK: Replace combination meter. 
    2. NG: Go to next Step. 
  2. Check harness and connector between combination meter and ABS ECU (A/T), combination meter and speed sensor (M/T) (See  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  ). 
    1. NG: Replace or replace harness or connector. 
    2. OK: Go to next step. 

      Check speed sensor circuit and ABS ECU.  

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:

  • 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.