Performing Self-Test

To perform self-test, turn ignition off. Ensure test equipment is properly attached. Program scan tool using the following steps:

Select VEHICLE & ENGINE SELECTION menu.
Select NEW VEHICLE, YEAR & MODEL.
Select DIAGNOSTIC DATA LINK.
Select PCM - POWERTRAIN CONTROL MODULE.
Select DIAGNOSTIC TEST MODE.
Select KOER SWITCH SELF-TEST.
Start engine and allow it to idle.
Follow operating instructions from scan tool menu.
Record DTCs and perform appropriate circuit test. See DIAGNOSTIC TROUBLE CODE (DTC) REFERENCE CHART . After test is completed, cycle ignition switch before performing other self-tests or driving vehicle.

NOTE: Speed control DTCs will be set during KOER SWITCH SELF-TEST if vehicle is not equipped with speed control. This is a normal condition. On vehicles without speed control, ignore DTCs P0565, P0566, P0567, P0568 and P0569.