Powertrain Control Module (PCM) Reset

POWERTRAIN CONTROL MODULE (PCM) RESET

Description
All OBD II scan tools support the PCM reset.

The 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, See DRIVE CYCLES. Driver Cycles
The following events occur when a PCM reset is performed:
- Clears the number of DTCs
- Clears the DTCs
- Clears the freeze frame data
- Clears diagnostic monitoring test results
- Resets status of the OBD II system monitors
- Sets DTC P1000

NOTE:When using the IDS or equivalent tester to perform a PCM reset, press the CLEAR button. This function is performed only after retrieval of continuous DTCs.