Key On Engine Off (KOEO) Self-Test

Key On Engine Off Self-Test

NOTE:
- Continuous memory Diagnostic Trouble Codes (DTCs) recorded in this step will be used for diagnosis after a pass code 111 is received in both the Key ON Engine OFF and the Engine Running Self-Tests.
- Deviation from this procedure may cause the output of false DTCs.

HOW TO RUN THE KEY ON ENGINE OFF SELF-TEST

DO:

- Verify that the vehicle has been properly prepared.
- Start engine and run until it reaches normal operating temperature.
- Turn engine OFF and wait 10 seconds.
- Activate Self-Test.
+ Analog VOM: Jumper STI to SIG RTN at the DLC and STI connectors.
+ Malfunction Indicator Lamp (MIL): Jumper STI to SIG RTN at the DLC and STI connectors. DTCs will be flashed on the MIL.
+ Scan Tool: 1) Enter vehicle selection. 2) Enter KOEO Self-Test.
- Place ignition key in the ON position.
- Record all DTCs displayed.

DON'T

- Depress throttle during Key ON Engine OFF Self-Test.