Engine Running Diagnostic Mode

For information on Ford Color Coded Illustrations refer to OEM COLOR CODING

Activation

NOTE: The engine running diagnostic mode is a hybrid powertrain control module strategy which is separate from the normal operating strategy. The specifics described here are applicable only to the hybrid variants. When in this mode, the engine is running and does not turn off, as it does during normal operation. The engine RPM may be increased to the desired speed by accelerator pedal position. The engine is allowed to idle as long as the powertrain and hybrid electric systems operate within the calibrated limits. This mode is helpful whenever the engine must stay running for diagnostics and repairs that require the engine to be idling for extended time. Carry out the following sequence to activate this mode.

NOTE: This procedure requires timely action from the user. Read and review all the steps in this procedure before attempting to activate Engine Running Diagnostic Mode. Failure to perform each step within the calibrated time range will abort the mode without notice requiring the user to restart the sequence.

Apply the parking brake.
1. Clear all DTC's
2. For PHEV be sure the HVB is above 25% charge.
3. Be sure the 12 volt battery is above 11 volts.
4. Power down the modules. Switch the ignition OFF and open and close the driver door. Allow
  2 minutes for all modules to power down. During the 2 minutes, do not use any module controlled features like power locks, windows or the radio. Failure to allow the vehicle to power down will prevent the vehicle from entering Engine Running Diagnostic Mode.
NOTE: Do not press the brake pedal.

Switch the ignition ON. The ignition should be on, the vehicle should not be Ready To Run.
Within 5 seconds - Fully apply the accelerator pedal and hold for 8-12 seconds.
Within 5 seconds - Release the accelerator pedal and apply the brake, shift the vehicle to Drive (D), release the brake and immediately apply the accelerator pedal for 8-12 seconds.
Within 5 seconds - Release the accelerator pedal and shift the gear selector to PARK (it is not necessary to apply the brake when shifting to Park [P]).
NOTE: If the sequence is correctly executed the powertrain malfunction indicator (wrench lamp) flashes once per second when the gear selector is shifted to PARK. The hybrid powertrain control module exits the engine running mode when the gear selector is shifted to any gear other than PARK, when the ignition is switched to the OFF or ACC position, or the powertrain or hybrid electric system exceeds calibrated limits.

To run the engine, press the brake and push the start button. When this sequence is completed successfully, the vehicle enters the engine running diagnostic mode and the engine remains running continuously. If this procedure is unsuccessful, switch the ignition to the off position, open and close the driver door, wait 2 minutes and repeat the procedure.