Using Generic Scan Tool

DESCRIPTION
The Powertrain Control Module (PCM) Reset allows the scan tool to command the PCM to clear all emission-related diagnostic information. When resetting the PCM, a DTC P1000 will be stored in the PCM until all the OBD II system monitors or components have been tested to satisfy a drive cycle, without any other faults occurring. For more information about a drive cycle, refer to Drive Cycles.

The following events occur when a PCM reset is performed:
- Clears the number of Diagnostic Trouble Codes (DTC).
- Clears the DTCs.
- Clears the freeze frame data.
- Clears oxygen sensor test data.
- Resets status of the OBD II system monitors.
- Sets DTC P1000.

PROCEDURE
These are general instructions to reset PCM. Refer to the manufacturer's manual for specific instructions.
- Turn key OFF.
- Perform the necessary vehicle preparation and visual inspection.
- Connect scan tool to Data Link Connector (DLC).
- Turn ignition key ON or start vehicle (depending on the pinpoint/diagnostic manual instructions for the type of data requested).
- Verify tool is connected and communicating properly.
- Perform reset.
- When finished, turn ignition key to the OFF position.
- Disconnect scan tool from vehicle.