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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 549 (BODY CONTROL SYSTEMS - DIAGNOSTICS)CIRCUIT INSPECTIONDIAGNOSIS 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 2003 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check voltage between terminals Tc and CG of DLC3. 

    PREPARATION:

    Turn ignition switch ON.

    CHECK:

    Measure voltage between terminals Tc and CG of DLC3.

    Fig 1: Checking Voltage Between Terminals Tc And CG Of DLC3
    G02838844Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK:

    1. Voltage: 10 - 14 V 
    1. OK : Proceed to next circuit inspection shown in problem symptom table (See  PROBLEM SYMPTOMS TABLE  ). 
    2. NG : Go To Next Step. 
  2. Check harness and connector between body ECU and DLC3, DLC3 and body ground (See  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  ). 
    1. NG : Repair or replace wire harness or connector. 
    2. OK : Check and replace Body ECU (See  PROBLEM SYMPTOMS TABLE  ). 
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.