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Home › Mazda › 1999 › 626 ES, 2.5 D, Automatic › Repair and Diagnosis (Single Page) › Body & Frame › Door Locks › Immobilizer Systems › Programming › Powertrain Control Module › Customer Supplied Only One Valid Key

Customer Supplied Only One Valid Key

  1. Cut new transponder equipped key(s), if necessary. Replace PCM. See POWERTRAIN CONTROL MODULE  under REMOVAL & INSTALLATION. Using new 1st key, turn ignition to ON position. SECURITY light should illuminate for 1-2 seconds. Turn new 1st key to LOCK position.
  2. Using new 2nd key, turn ignition to ON position, then LOCK position 6 times. Ensure 6th turning is done within one second. SECURITY light should be flashing at a 300-millisecond interval. Wait about 5 minutes until SECURITY light flashing has decreased to a 1.2-second interval.
  3. Input code word. See INPUTTING CODE WORD  . SECURITY light should stop flashing and stay illuminated. Using new 2nd key, turn ignition to ON position. SECURITY light should illuminate for 1-2 seconds. Turn new 2nd key to LOCK position and remove key.
  4. Using valid key, start engine. SECURITY light should illuminate for 1-2 seconds and engine should continue to run. Turn valid key to LOCK position and remove key.
  5. Repeat step 4)  with each new key, up to 8 keys total. Wait 30 seconds, program will quit automatically. After reprogramming is complete, clear DTCs with New Generation Star (NGS) tester.
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