PCM Reset Procedure

After a PCM reset procedure has been performed, the following conditions will be met:

• All DTCs will be cleared from PCM memory.
• All freeze frame data will be cleared from PCM memory.
• Diagnostic monitoring results will be cleared from PCM memory.
• OBD-II system monitor status will reset.
• DTC P1000 will be set in PCM memory until all OBD-II system monitors or components have been tested to satisfy OBD-II drive cycle without any faults occurring. To clear DTC P1000, perform DRIVE CYCLES . Ensure OBD-II DRIVE CYCLE PROCEDURE is performed to verify repair.

To perform PCM reset using scan tool, perform the following:

• Using Generic Scan Tool
  
  Follow scan tool manufacturer's operating instructions.
• Using New Generation Star Tester
  
  Turn ignition off. Perform necessary vehicle preparation and visual inspection. Select VEHICLE YEAR and MODEL. Follow operating instructions from menu. Select GENERIC OBD-II FUNCTIONS. Press CONT button if all OBD-II monitors are not complete. Turn ignition on. Select CLEAR DIAGNOSTIC CODES. Press START key.

If after clearing DTCs a concern has not been corrected, or a fault is still present, a hard code will immediately be reset in PCM memory.