Key on Engine Off (KOEO)

INSPECTION PROCEDURE
Key On Engine Off (KOEO) Self-Test
1. Check vacuum houses for damage and proper connection.
2. Check EEC system wiring harness for proper connection.
3. Service as necessary about 1. and 2.
4. Apply parking brake.
5. Place shift lever firmly in P range.
6. Block drive wheels.
7. Turn off all electrical loads.
8. Connect appropriate test equipment to the Self-Test Connector in order to run Self-Test.
9. Start engine and run until at operating temperature.
10. Turn engine off and wait 10 seconds.
11. Set EEC-IV/MECS Switch to position EEC-IV.
12. Select fast code mode with the mode selector switch.
13. Turn on the power to the SUPER STAR II tester.
The tester will briefly display 888. It will also all the prompts on the left side of display and speaker will beep.
14. Depress the test button on the tester to the test position.
15. Turn on the vehicle ignition key.
16. Record all trouble codes displayed.