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Home >> Saturn >> 2004 >> Ion 2 4D Coupe, Automatic CVT >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls (Introduction) >> Repair Instructions >> Engine Control Module (ECM) Replacement >> Installation Procedure
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Installation Procedure

  1. Use the retaining tab to secure the ECM, when installing the ECM to the underhood junction block bracket.
    2. Fig 1: View Of ECM
    GM857196Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  2. Connect the large ECM harness connector (4) to the ECM.

    Tighten:  Tighten the bolt to 4 N.m (35 lb in).

  3. Connect the small ECM harness connector (3) to the ECM.
    4. Fig 2: View Of Engine Electrical Center
    GM873343Courtesy of GENERAL MOTORS CORP.
  4. Connect the negative Battery Cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
  5. Program the ECM. Refer to Service Programming System (SPS) in Programming.
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