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.
2002 Ford Excursion 4WD V10-6.8LFACTORY OEM SERVICE PROCEDURE
Pinpoint Test Notes
CAUTION:
^ Do not make jumper connections except as directed. Incorrect connections may damage the voltage regulator test terminals.
^ Do not allow any metal object to come in contact with the generator housing and internal diode cooling fins.
NOTE:
^ While carrying out any pinpoint test, disregard any DTCs set while following any specific pinpoint test. After the completion of any test, be sure to clear all codes in the PCM.
^ Dual generator I circuit/bulb circuit 4-way connector MUST be connected before disconnecting or connecting the battery. The PCM relearns its parameters every time it is disconnected and connected to power. Failure to follow this procedure will mislead the PCM into misinterpreting the charging system as a single generator system, causing loss of DTC capability and control.
^ All voltage measurements are referenced to negative (-) battery post unless otherwise specified.
^ Do not make jumper connections except as directed. Incorrect connections may damage the voltage regulator test terminals.
^ Do not allow any metal object to come in contact with the generator housing and internal diode cooling fins.
NOTE:
^ While carrying out any pinpoint test, disregard any DTCs set while following any specific pinpoint test. After the completion of any test, be sure to clear all codes in the PCM.
^ Dual generator I circuit/bulb circuit 4-way connector MUST be connected before disconnecting or connecting the battery. The PCM relearns its parameters every time it is disconnected and connected to power. Failure to follow this procedure will mislead the PCM into misinterpreting the charging system as a single generator system, causing loss of DTC capability and control.
^ All voltage measurements are referenced to negative (-) battery post unless otherwise specified.
Factory Service Tools
Use the Manual With the Right Hardware
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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.