Engine Identification (ID) Codes
WARNING: This page is about a different car, the 1995 Ford Aerostar. However, it is still accessible from the selected car via links, so may be relevant.
Engine ID codes are issued at beginning of KOER SELF-TEST. Codes are one-digit numbers represented by number of pulses displayed. See Figure . Engine ID code is equal to one-half the number o f engine cylinders. For example, 2 pulses would indicate that engine is a 4-cylinder. Engine ID code is used to verify proper PCM is installed and that SELF-TEST has been entered.