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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 551 (PASSENGER DOOR CONTROL SYSTEM)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 2003 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check ECU-IG, PWR No.2 and ECU-B fuse. 

    CHECK:

    Check continuity of ECU-IG, PWR No.2 and ECU-B fuse.

    OK:

    1. Continuity 
      1. NG : Replace the failure fuse. 
      2. OK : Go to Next Step 
  2. Check voltage between terminals BDR, CPUB, SIG and GND of passenger door ECU connector. 

    PREPARATION:

    Turn ignition switch ON.

    CHECK:

    Measure voltage between terminals SIG, and GND.

    OK:

    1. Voltage: 10 - 14 V 

    PREPARATION:

    1. Turn ignition switch OFF.
    2. Disconnect the passenger door ECU connector.

    CHECK:

    Measure voltage between terminals BDR, CPUB and GND.

    OK:

    1. Voltage: 10 - 14 V 
    1. OK : Proceed to next circuit inspection shown in  PROBLEM SYMPTOMS TABLE  . 
    2. NG : Go to Next Step 

  3. Check wire harness and connector between passenger door ECU and battery, passenger door ECU and body ground (See  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  ). 
    1. NG : Repair or replace wire harness or connector. 
    2. OK : Proceed to next circuit inspection shown in (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.