PCM Reset Procedure

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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.