1998 Saturn SW2 AutomaticFACTORY OEM SERVICE PROCEDURE

Password Learn Procedure For Anti-Theft System

  1. Password learn procedure must be performed if Powertrain Control Module (PCM) is replaced. A password is communicated between Body Control Module (BCM) and PCM to provide engine operation. If PCM is replaced, the PCM must learn the password from the BCM. If password learn procedure is not performed a Diagnostic Trouble Code (DTC) may be set in the PCM when attempting to start engine.
    NOTE: Ensure battery is fully charged before proceeding. Performing this procedure will cause a DTC P1630 to be set in the PCM. It will be necessary to use scan tool to check for DTC P1630 when performing this procedure.
  2. Turn ignition switch to ON position with engine off for 11 minutes. Turn ignition switch to OFF position for 30 seconds.
  3. Turn ignition switch to ON position with engine off for 11 minutes. Turn ignition switch to OFF position for 30 seconds.
  4. Turn ignition switch to ON position with engine off for 11 minutes or until DTC P1630 is set. Turn ignition switch to OFF position for 30 seconds.
  5. Turn ignition switch to ON position with engine off for 30 seconds.
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:

  • • 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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