REV CSection 4 • Repair ProceduresPart No. 82259 GS-3384 4 - 61September 20055-7Engine Fault Codes -Ford ModelsHow to Retrieve Engine FaultCodesWhen a engine malfunction is detected by theElectronic Control Module (ECM), a fault code isrecorded and the check engine light will illuminateat the ground controls. Use the following procedureto retrieve the engine fault code to determine theengine malfunction.Perform this procedure with thekey switch in the off position.1 Open the ground controls side cover.2 Pull out the red Emergency Stop button to theon position at both the ground and platformcontrols. Turn the key switch to groundcontrols.3 Quickly activate and release the start toggleswitch/button. Do not start the engine.4 Move and hold the run/test toggle switch to thetest position.Result: The check engine light should turn on.The check engine light should begin to blink.5 Continue to hold the run/test toggle switch in thetest position and count the blinks.Fault codes are two or three digits.The check engine light will blinkthe first digit of a two digit codethen will pause for 1.2 secondsand then blink the second digit.For example: the check enginelight blinks 5 consecutive times,pauses for 1.2 seconds and thenblinks 1 time. That would indicatecode 51. The ECM is able to storeup to six individual fault codes.There will be a 2.4 second pausebetween codes.6 Refer to Section 5 for definition of engine faultcodes.Once a fault code has beenretrieved and the repair has beencompleted, the ECM memorymust be reset to clear the faultcode from the ECM. See How toClear Engine Fault Codes from theECM.How to Clear Engine Fault Codesfrom the ECMPerform this procedure with theengine off and the key switch inthe off position.1 Locate the battery under the ground controlpanel.2 Disconnect the negative battery cable from thebattery for a minimum of 20 minutes.Electrocution hazard. Contact withelectrically charged circuits couldresult in death or serious injury.Remove all rings, watches andother jewelry.3 Connect the negative battery cable to thebattery.4 Start the engine and allow it to idle forapproximately ten minutes.Result: The check engine light should not turnon.GROUND CONTROLS
