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.
• Start engine.
• Select VEHICLE & ENGINE SELECTION menu.
• SELECT NEW VEHICLE, YEAR & MODEL.
• Select DIAGNOSTIC DATA LINK.
• Select PCM — POWERTRAIN CONTROL MODULE.
• Select DIAGNOSTIC TEST MODE.
• Select KOEO 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.