2016 Subaru WRX BaseFACTORY OEM SERVICE PROCEDURE

Engine Control Module (ECM): Removal

  1. Disconnect the ground terminal from battery sensor. < Ref. to BATTERY , NOTE, Note. >
  2. Remove the clip (A) and clip (B) which secure the engine harness and bulkhead harness from the bracket, and remove the bolt which secures the ECM to the bracket.
    Fig 1: Identifying Engine Harness And Bulkhead Harness Clips
    G10266252Courtesy of SUBARU OF AMERICA, INC.
  3. Pull out the ECM from the bracket.
    NOTE: When performing the pulling out operation, pay attention not to apply excessive load to the breather filter portion (a) in order to avoid the damage.
Factory Service Tools

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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.

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