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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 776 (BODY CONTROL SYSTEM - DIAGNOSIS)CIRCUIT INSPECTIONWIRELESS DOOR LOCK CONTROL RECEIVER CIRCUITINSPECTION PROCEDURE
2004 Toyota Matrix XR, FWD, Standard

Inspection Procedure

2004 Toyota Matrix XR, FWD, StandardSECTION Inspection Procedure
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 that DTC 42 is not output 
    1. NG: Check the RDA Line 
    2. OK: Go to next step. 
  2. Check wire harness 

    PREPARATION: 

    Disconnect connectors of wireless door lock tuner and Body ECU

    CHECK: 

    Check continuity between terminals PRG of wireless door lock tuner and PRG of Body ECU

    OK 

    continuity 

    1. NG: Repair or replace wire harness 
    2. OK: Go to next step. 
  3. Check the wireless door lock tuner 

    CHECK: 

    Replace the wireless door lock tuner and check it if recovers normally

    OK 

    Must be recovered normally

    1. NG: Proceed to next circuit inspection shown on problem symptoms table (See  PROBLEM SYMPTOMS TABLE  ) 
    2. OK: Go to next step. 

      Failure of the original wireless door lock tuner 

RENDER: 1.0x

NO RELATED

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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.