KOER Self-Test

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Ensure engine is warmed to normal operating temperature. Turn ignition switch to OFF position. Ensure test equipment is properly attached. Program scan tool using the following steps:

Select vehicle and engine selection menu. See Figure.
Select year, engine, model and any additional information requested by scan tool.
Select DIAGNOSTIC DATA LINK.
Select PCM - POWERTRAIN CTRL MODULE.
Select DIAGNOSTIC TEST MODE.
Select KOER ON-DEMAND SELF-TEST.
Start engine and allow to idle.
Follow operating instructions from scan tool menu.
Perform BOO and TCS cycling (if equipped).