Key On/Engine Off (KOEO) Self-Test

1)  This is a test of electronic engine control system, conducted with power (voltage) applied and engine not running. Activate self-test and record all codes displayed.

2)  Erase codes and repeat self-test. Diagnose only codes that occur during repeat self-test. See SERVICE CODE REFERENCE  . If no codes are present, proceed to KEY ON ENGINE RUNNING (KOER) SELF-TEST.