E053

Code E053:

HEI Circuit Detail:

DESCRIPTION:

Code E053 is set if the PCM/ECM does not receive distributor reference pulses from the HEI for more than .4 seconds. Since the PFI system requires HEI pulses in order to fire the injectors, most occurrences of code E053 will be accompanied by a stall.

TEST CONDITIONS:

1. Code E019 not set.

FAILURE CONDITIONS:

1. Engine speed greater than 568 rpm followed by no distributor reference pulses for .4 seconds.

ACTION TAKEN:

1. Code E053 is stored as a history code. (No telltales are illuminated).

NOTES ON FAULT TREE:

1. Use tool J35616 to make jumpers. You will need 2 patch cords and 2 each of the female and male flexible connectors.

NOTE ON INTERMITTENTS:

Code E053 can be caused by:

1. Do not attempt to diagnose a history code E053 unless the customer complains of stumble, miss, stall or other driveability condition that could be caused by loss of spark or fuel injection.
2. Loss of battery power to "B+" terminal of the distributor.
3. Pick up coil that has an intermittent short, open or poor connection at the module.
4. Check PCM/ECM connector for improperly seated terminals and mating to the PCM/ECM connector.