Inspection Procedure

2004 Toyota Matrix XR, FWD, StandardSECTION Inspection Procedure
WARNING: This page is about a different car, the 2002 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 The DLC3. 

    Preparation  : turn the ignition switch ON.

    Check  : measure voltage between terminal TC and CG of DLC3.

    OK  : Voltage: 10-14 V.

    Fig 1: Identifying DLC3 Terminals
    G01118846Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. OK  : If ABS warning light does not blink even after TC and CG have been connected, the ECU may be defective.
    2. NG  : Go to step  2.
  2. With Ignition Switch OFF, Check For Open And Short Circuit In Harness And Connector Between Skid Control ECU And DLC3, DLC3 And Body Ground. See  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  . 
    1. NG  : Repair or replace harness or connector.
    2. NOTE: When replacing the ECU, perform the zero point calibration. See step  6 under PRE-CHECK.
    3. OK  : Check and replace skid control ECU.
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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.