Key On Engine Off (KOEO) Self-Test

These DTCs indicate faults are present at time of testing. A hard fault may cause CHECK ENGINE or MIL to illuminate and remain illuminated until fault is repaired. If KOEO DTCs are retrieved during a KOEO SELF-TEST, identify DTCs and perform appropriate diagnostic test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS  .

SYSTEM PASS indicates no DTCs were recorded in that portion of test. If SYSTEM PASS is not retrieved in KOEO SELF-TEST, DTCs retrieved during KOER SELF-TEST may not be valid.

Ensure engine is at normal operating temperature. If engine does not start (or stalls after starting), continue KOEO SELF-TEST. Turn ignition switch to OFF position. Ensure test equipment is properly attached. Program NGS tester following manufacturer's instructions. Follow operating instructions from NGS tester menu.