KOEO Self-Test

Ensure test equipment is properly attached. Start and warm engine to normal operating temperature. Stop engine and wait 10 seconds. Turn ignition on (engine off). DO NOT depress throttle. Record all KOEO and Continuous Memory Codes.

If a Code 111 (pass code) is not retrieved, service KOEO codes. See CODE REFERENCE CHART  . If PCM will not output codes, go to CIRCUIT TEST QA. See TESTS W/CODES - EEC-IV (2.0L) article in ENGINE PERFORMANCE. If service codes are retrieved:

• If CHECK ENGINE light is on, service codes in order retrieved. See CODE REFERENCE CHART  .
• If vehicle displays a Code 111 (pass code) and does not have any of symptoms described in previous steps, go to KOER SELF-TEST  .