Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD1996F 150 4WD PICKUP L6-300 4.9LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULESERVICE AND REPAIRRESET PROCEDUREUSING GENERIC SCAN TOOL
1996 Ford F 150 4WD Pickup L6-300 4.9L
Using Generic Scan Tool
1996 Ford F 150 4WD Pickup L6-300 4.9LSECTION 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.
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.
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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.