Key On Engine Running (KOER) On-Demand Self Test

KOER On-Demand Self Test
Connect the NGS Tester to the DLC under the dash. Turn off accessories. Turn A/C off. If vehicle is equipped with an auxiliary powertrain control (rpm control), it must be turned off to perform self tests.

NOTE: Engine will run rough during this test.

^ Perform the necessary vehicle preparation and visual inspection. Refer to Quick Test Operation. Quick Test Operation
^ Start engine.
^ SELECT CORRECT VEHICLE, YEAR and MODEL.
^ Select DIAGNOSTIC DATA LINK.
^ Select PCM POWERTRAIN CONTROL MODULE.
^ Select DIAGNOSTIC TEST MODE.
^ Select KOER ON DEMAND SELF TEST.
^ Follow operating instructions from the menu.
^ Record DTCs and follow appropriate pinpoint test.
^ After test, cycle key to off before running other tests or driving vehicle.