ML - Testing Notes

NOTE: You should enter this Pinpoint Test only when you have been directed here from Quick Test or Pinpoint Test QA.


REMEMBER


To prevent the replacement of good components, be aware that the following non-EEC areas may be at fault.

- Fuse, bulb or socket.


This Pinpoint Test is intended to diagnose only the following:


- STO/MIL Circuit

- Processor assembly



DESCRIPTION


The Malfunction Indicator Light (MIL) is intended to alert the driver at certain malfunctions in the EEC-IV system. The MIL output is turned on when the strategy detects a fault in input/output circuits. The light will remain on as long as fault causing it is present. Regulations governing this light also require that the Self-Test codes be displayed by the flashing of this light.