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.
2001 Ford Explorer ChassisFACTORY OEM SERVICE PROCEDURE
Charging System - Generators & Regulators
- Description
- Adjustments
- Trouble Shooting
- On-Vehicle Testing
- System Tests
- Notes
- Test A: Warning Indicator Is On With Engine Running, System Is Not Charging (4.0L OHV)
- Test B: Warning Indicator Is Off With Ignition On, System Is Not Charging (4.0L OHV)
- Test C: Warning Indicator Is On With Engine Running, System Is Charging (4.0L OHV)
- Test D: Warning Indicator Is Off With Ignition On, System Is Charging (4.0L OHV)
- Test E: Warning Indicator Operates Properly, System Is Not Charging (4.0L OHV)
- Test F: Warning Indicator Flickers Or Operates Intermittently (4.0L OHV)
- Test G: System Overcharges (4.0L OHV)
- Test H: Warning Indicator Is On With Engine Running, System Is Not Charging (4.0L SOHC & 5.0L)
- Test I: Warning Indicator Is Off With Ignition On, System Is Not Charging (4.0L SOHC & 5.0L)
- Test J: Warning Indicator Is On With Engine Running, System Is Charging (4.0L SOHC & 5.0L)
- Test K: Warning Indicator Is Off With Ignition On, System Is Charging (4.0L SOHC & 5.0L)
- Test L: Warning Indicator Operates Properly, System Is Not Charging (4.0L SOHC & 5.0L)
- Test M: Warning Indicator Flickers Or Operates Intermittently (4.0L SOHC & 5.0L)
- Test N: System Overcharges (4.0L SOHC & 5.0L)
- Removal & Installation
- Torque Specifications
- Wiring Diagrams
Factory Service Tools
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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.