For Diagnostics

2004 Toyota Matrix XR, FWD, StandardSECTION For Diagnostics
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. Turn ignition switch to LOCK position. Disconnect and shield negative battery cable. Wait at least 90 seconds. Disconnect air bag sensor assembly connectors. See AIR BAG SENSOR ASSEMBLYΒ  under REMOVAL & INSTALLATION. Remove driver-side air bag module. See DRIVER-SIDE AIR BAG MODULEΒ  under REMOVAL & INSTALLATION. Disconnect passenger-side air bag module connector, accessible by removal of glove box assembly. See Fig 1.
  2. Disconnect right and left side air bag module connectors. See SIDE AIR BAG MODULEΒ  under REMOVAL & INSTALLATION. Disconnect right and left side curtain air bag module connectors. See SIDE CURTAIN AIR BAG MODULEΒ  under REMOVAL & INSTALLATION. Disconnect right and left front seat belt pretensioner connectors. See SEAT BELT PRETENSIONERΒ  under REMOVAL & INSTALLATION.
Fig 1: Disconnecting Passenger-side Air Bag Module Connector
G99C23558Courtesy of Β© TOYOTA, LICENSE AGREEMENT TMS1002
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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.