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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 482 (BODY CONTROL SYSTEMS - DIAGNOSTICS)CIRCUIT INSPECTIONPOWER SOURCE 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 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check voltage between terminals +B/BDL and GND1/GND2 of passenger side J/B ECU connectors. 

    PREPARATION: 

    1. Turn the ignition switch OFF.
    2. Disconnect the passenger side J/B ECU connectors.

    CHECK: 

    Measure the voltage between terminals +B/BDL and GND1/GND2.

    OK: 

    Voltage: 9 to 14 V 

    1. OK : Proceed to next circuit inspection shown in problem symptoms table (See  PROBLEM SYMPTOMS TABLE   ). 
    2. NG : Go to next step. 
  2. Check DOME, CUT and DOOR fuses. 

    PREPARATION: 

    Remove the DOME, CUT and DOOR fuses from the engine room J/B.

    CHECK: 

    Measure the resistance of the fuse.

    OK: 

    Resistance: Below 1 Ω 

    Fig 1: Identifying Engine Room J/B And Driver Side J/B
    G02913471Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG : Replace faulty fuse. 
    2. OK : Go to next step. 
  3. Check for harness and connector between passenger side J/B ECU and body ground (See  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  ). 
    1. NG : Repair or replace harness and connector. 
    2. OK : Check and repair harness and connector between passenger side J/B ECU and battery (See  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  ). 
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.