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

All DTCs cleared from PCM memory.
All freeze frame data cleared from PCM memory.
All oxygen sensor test data cleared from PCM memory.
OBD-II system monitor status is reset.
DTC P1000 set in PCM memory.

To perform PCM reset using NGS scan tool, ensure connectors are properly connected. Program scan tool using the following steps:

Select vehicle and engine selection menu (optional). See Figure.
Select year, engine, model and any additional information requested by scan tool (optional).
Follow operating instructions from scan tool menu.
Select GENERIC OBD-II FUNCTIONS. Press CONT button if monitors are not complete.
Turn ignition on.
Select CLEAR DIAGNOSTIC CODES.

All codes should now be cleared from PCM memory. If problem has not been corrected or fault is still present, hard code will immediately be reset in PCM memory.

CAUTION: DO NOT disconnect vehicle battery to clear trouble codes. This will erase operating information from Keep-Alive Memory (KAM). To clear KAM, disconnect negative battery terminal for at least 5 minutes.

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.

Safety Warning

PCM Reset

Use the Manual With the Right Hardware

When to See a Mechanic

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