2003 Toyota Matrix Base, 4WDFACTORY OEM SERVICE PROCEDURE

Deceleration Sensor (4WD): Replacement

  1. REMOVE FRONT SEAT ASSEMBLY LH (See  OVERHAUL  ) 
  2. REMOVE DECELERATION SENSOR BRACKET 
    1. Remove the bolt and upper side deceleration sensor bracket.
      Fig 1: Removing Deceleration Sensor
      G02865630Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. REMOVE DECELERATION SENSOR 
    1. Disconnect the deceleration sensor connector from the deceleration sensor, then remove the 2 bolts and deceleration sensor with the anchor side deceleration sensor bracket.
      Fig 2: Disconnecting Deceleration Sensor
      G02865631Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSTALL DECELERATION SENSOR 
    1. Install the 2 bolts and deceleration sensor to the body, then connect the deceleration sensor connector to the deceleration sensor.
      2. Fig 3: Installing Deceleration Sensor
      G02865632Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Torque: 21 N.m (214 ft.lbf, 15 ft.lbf) 

    NOTE:
    • Do not use the dropped or damage sensor.
    • Free from the foreign matters or floor carpet between the deceleration sensor bracket and body.
  5. INSTALL DECELERATION SENSOR BRACKET 
    1. Install the bolt and upper side deceleration sensor bracket.
      2. Fig 4: Installing Deceleration Sensor
      G02865633Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Torque: 21 N.m (214 ft.lbf, 15 ft.lbf) 

  6. INSTALL FRONT SEAT ASSEMBLY LH (See  OVERHAUL  ) 
  7. CHECK DECELERATION SENSOR SIGNAL (See  PRE-CHECK  ) 
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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.

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