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Free DIAGNOSTICS and CODE READING!
HEC Instrument Cluster Diagnostics
This is a basic set of instructions for putting your 99 Mustang instrument cluster into a diagnostic mode. Doing this allows you to view the actual data being calculated by the ECC and other systems. Written by Cornholio Productions for Mustangworld Activating Test Mode To enter the HEC Dealer test mode, depress and hold the instrument cluster SELECT/RESET button, turn the ignition switch to the RUN position, and then continue pressing the SELECT/RESET button (5 seconds) until tESt is displayed in the odometer. The SELECT/RESET button must be released within 3 seconds of the odometer tESt display to begin the dealer test mode. Depress the SELECT/RESET button to advance through the following steps until dtc is displayed. Depressing the SELECT/RESET button will display any stored continuous DTCs before proceeding to the next step. Read on...http://www.mustangworld.com/ourpics/News/99hec.htm |
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