Pcm Code EO53, Distributor Signal Interrupt: Action:

Code EO53 is set. SERVICE ENGINE SOON light not illuminated.

Code EO53 is set if PCM does not receive distributor reference pulses from HEI more than .4 second. Since PFI system requires HEI pulses in order to fire the injectors, most occurrences of Code EO53 will be accompanied by a stall.

NOTE: Test numbers refer to test numbers on diagnostic chart.

A set of jumper wires is required on these test.