Key On Engine Off (KOEO) Self Test

DESCRIPTION
Key On Engine Off (KOEO) Self-Test is a functional test of the powertrain control system performed on demand with the key On and engine Off. A fault has to be present at the time of testing for the KOEO Self-Test to detect the fault. When a fault is detected, a Diagnostic Trouble Code (DTC) will be output on the data link when requested by a scan tool.

PROCEDURES
- Perform the necessary vehicle preparation and visual inspection.

- Select VEHICLE & ENGINE SELECTION.

- Select NEW VEHICLE YEAR & MODEL.

- Select year, engine, model with the appropriate qualifier, if needed (i.e., transmission, 49 State, California).

- Select DIAGNOSTIC DATA LINK.

- Select PCM - POWERTRAIN CTRL MODULE.

- Select DIAGNOSTIC TEST MODE.

- Select KOEO ON-DEMAND SELF-TEST

- Turn key On.

- Press START and TRIGGER.

- Press CANCEL to quit.