Key On, Engine Running (KOER) Self-Test

NOTE: It is necessary to clear codes in memory before performing this test. DO NOT move throttle during test.

1) Deactivate self-test. Start and run engine at 2000 RPM for 2 minutes to warm up O2S. Turn off engine and wait 10 seconds.

2) Restart engine, and activate self-test. Record all service codes displayed. See TROUBLE CODE DEFINITION table. If no codes are present, proceed to SWITCH MONITOR TEST.