Key on Engine Running (KOER)

INSPECTION PROCEDURE
Key On Engine Running (KOER) Self-Test
1. Connect appropriate test equipment to the Self-Test Connector in order to run Self-Test.
2. Start and run engine at 2,000 rpm for two minutes. This action warms up the HO2S.
3. Turn engine off and wait 10 seconds.
4. Set EEC-IV/MECS Switch to position EEC-IV.
5. Select fast code mode with the mode selector switch.
6. 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.
7. Start engine.
8. After the ID code depress and release the brake pedal if appropriate.
9. After the ID code click twice on the C/D off switch button.
10. After the ID code, within 1 to 2 seconds, turn the steering wheel at least one-half turn and then release it, if appropriate.
11. If a Dynamic Response Code occurs, perform a brief wide-open throttle (WOT).
12. Record all Diagnostic Trouble Codes (DTC'S) displayed.