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Home >> Acura >> 2003 >> MDX Base >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission >> General Troubleshooting Information >> How to Substitute the PCM

How to Substitute the PCM

  1. Connect the HAS to the DLC.
  2. Turn the ignition switch OFF.
  3. Jump the SCS line with the HAS.
  4. Remove the PCM, and install a known-good PCM.
  5. Rewrite the immobilizer code with the PCM replacement procedure in the HAS; this will allow you to start the engine.
  6. After completing your test, reinstall the original PCM, and rewrite the immobilizer code with the PCM replacement procedure in the HAS again.
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