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 MANUALSFORD2012EXPLORER FWD V6-3.5LREPAIR AND DIAGNOSISSTARTING AND CHARGINGCHARGING SYSTEMDESCRIPTION AND OPERATIONCOMPONENT DESCRIPTION
2012 Ford Explorer FWD V6-3.5L
Component Description
2012 Ford Explorer FWD V6-3.5LSECTION Component Description
Charging System
Component Description
Generator
The generator is equipped with an internal voltage regulator and if equipped, a separately serviceable radial arm.
Battery Current Sensor
The battery current sensor is attached to the negative battery cable. It is supplied a 5-volt reference voltage and a ground from the BCM (Body Control Module). The battery current sensor is a Hall-effect sensor that supplies a PWM (Pulse Width Modulated) feedback signal to the BCM (Body Control Module).
Generator Current Sensor
The generator current sensor is attached to the generator B+ cable. It is supplied a 5-volt reference voltage and a ground from the PCM (Powertrain Control Module). The generator current sensor is a Hall-effect sensor that supplies a analog feedback signal to the PCM (Powertrain Control Module).
Powertrain Control Module (PCM)
The PCM (Powertrain Control Module) receives input signals from sensors and other components (switches, relays). Based on this information, the PCM (Powertrain Control Module) generates output signals to control various relays, solenoids and actuators.
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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.