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 MANUALSFORD2012FOCUS L4-2.0LREPAIR AND DIAGNOSISBODY AND FRAMEBODY CONTROL SYSTEMSTESTING AND INSPECTIONPINPOINT TESTSDIAGNOSTIC ROUTINE AH
2012 Ford Focus L4-2.0L
Diagnostic Routine AH
2012 Ford Focus L4-2.0LSECTION Diagnostic Routine AH
Diagnostic Routine AH
Diagnostic Overview
U3003:62
Refer to Wiring Diagram Set 117 for schematic and connector information Electrical Diagrams.
Normal Operation and Fault Conditions
DTC Fault Trigger Conditions
Pinpoint Test
1. CHECK THE RFA (Remote Function Actuator) MODULE VOLTAGE SUPPLY
1. Ignition ON.
2. Measure and record:
3. Ignition OFF.
4. Disconnect: RFA (Remote Function Actuator) module C4392C.
5. Ignition ON.
6. Measure:
Is the voltage measured at the RFA (Remote Function Actuator) module within 2 volts of the voltage measured at the battery?
2. CHECK THE RFA (Remote Function Actuator) MODULE GROUND
1. Measure:
Is the voltage greater than 11 volts?
3. CHECK FOR CORRECT RFA (Remote Function Actuator) MODULE OPERATION
1. Ignition OFF.
2. Disconnect and inspect all the RFA (Remote Function Actuator) module connectors.
3. Repair:
- corrosion (install new connector or terminals- clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary
4. Connect the RFA (Remote Function Actuator) module connectors. Make sure they seat and latch correctly.
5. Operate the system and determine if the concern is still present.
Is the concern still present?
RENDER: 1.0x
NO RELATED
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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.