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 K
2012 Ford Focus L4-2.0L
Diagnostic Routine K
2012 Ford Focus L4-2.0LSECTION Diagnostic Routine K
Diagnostic Routine K
Diagnostic Overview
U0100:00
Normal Operation and Fault Conditions
DTC Fault Trigger Conditions
Pinpoint Test
1. VERIFY THE SCAN TOOL CAN COMMUNICATE WITH THE PCM (Powertrain Control Module)
1. Connect the scan tool.
2. Check that a vehicle session can be established using the scan tool.
Can a vehicle session be established?
2. CHECK THE BCM (Body Control Module) CONTINUOUS MEMORY DTCs (Diagnostic Trouble Codes)
1. Ignition ON.
2. Using a scan tool, perform the BCM (Body Control Module) self-test.
3. Clear the DTCs (Diagnostic Trouble Codes).
4. Wait 10 seconds.
5. Repeat the BCM (Body Control Module) self-test.
Is DTC (Diagnostic Trouble Code) U0100:00 retrieved again?
3. RETRIEVE THE RECORDED DTCs (Diagnostic Trouble Codes) FROM THE PCM (Powertrain Control Module) KOEO (Key ON Engine OFF) SELF-TEST
1. Using a scan tool, perform the PCM (Powertrain Control Module) KOEO (Key ON Engine OFF) self-test.
Is DTC (Diagnostic Trouble Code) P0562 or DTC (Diagnostic Trouble Code) P0563 recorded?
4. RETRIEVE THE RECORDED DTCs (Diagnostic Trouble Codes) FROM THE BCM (Body Control Module) SELF-TEST
1. Using a scan tool, perform the BCM (Body Control Module) self-test.
Are any DTCs (Diagnostic Trouble Codes) recorded?
5. CHECK FOR DTC (Diagnostic Trouble Code) U0100:00 SET IN OTHER MODULES
1. Ignition ON.
2. Using a scan tool, retrieve all continuous memory DTCs (Diagnostic Trouble Codes).
Is DTC U0100:00 set in the ABS (Anti-Lock Brake System) module or in the RCM (Restraints Control Module)?
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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.