Inspection Procedure

2004 Toyota Matrix XR, FWD, StandardSECTION Inspection Procedure
WARNING: This page is about a different car, the 2002 Lexus ES 300. However, it is still accessible from the selected car via links, so may be relevant.

For circuit wiring diagram, see Fig 1.

  1. Check fuses. Check whether PWR-SEAT 30A fuse, ECU-B 10A fuse and ECU-IG 10A fuse operate normally. If the fuses are OK, go to the next step. If the fuses are not good, replace the fuses.
  2. Check the source voltage. See Fig 2. If the results are OK, check and replace the position control ECU assembly. See POSITION CONTROL ECU ASSEMBLYΒ  under REMOVAL & INSTALLATION. If the results are not good, repair or replace the harness and connector.
Fig 1: Power Source Circuit Wiring Diagram
G00176344Courtesy of Β© TOYOTA, LICENSE AGREEMENT TMS1002
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.