Diagnostic Routine I

2012 Ford Explorer FWD V6-3.5LSECTION Diagnostic Routine I



Diagnostic Routine I

Diagnostic Overview

DTC U3003:17

Normal Operation and Fault Conditions

DTC Fault Trigger Conditions







Pinpoint Test

NOTE: DTC (Diagnostic Trouble Code) U3003:17 may be stored in the module memory due to previous battery charging or vehicle jump starting events.

1. CHECK FOR DTC (Diagnostic Trouble Code) B1317, B1676, P0563 (PCM (Powertrain Control Module)) OR U3003:17 SET IN OTHER MODULES

1. Ignition ON.

2. Using a scan tool, retrieve the continuous memory DTCs (Diagnostic Trouble Codes) from all modules.

Is DTC B1317, B1676, P0563 (PCM (Powertrain Control Module)) or U3003:17 set in more than one module?








2. CHECK THE BATTERY VOLTAGE

1. Turn off all interior/exterior lights and accessories.

2. Start and run the engine at approximately 2,000 RPM (Revolutions Per Minute) for 3 minutes while monitoring the battery voltage.

Does the battery voltage rise to 15.5 volts or higher?








3. RECHECK FOR DTCs (Diagnostic Trouble Codes) U3003:17

1. Turn the engine off.

2. Ignition ON.

3. Using a scan tool, clear the continuous memory BCM (Body Control Module) DTCs (Diagnostic Trouble Codes).

4. Carry out the BCM (Body Control Module) self-test.

Is DTC U3003:17 present?







RENDER: 1.0x

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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.