Quick Test 5.0 - Key on Engine Running (KOER)

The Engine Running Quick-Test provides hard DTCs only.

Some special considerations for KOER Quick-Test include the following:
- Follow the menu screen instructions as they appear.
- If a DTC appears after the KOER test, a malfunction is present. Refer to the On-Board Diagnostic Trouble Code Description Chart for service information.

PERFORMING KOER
- Perform visual inspection and vehicle preparation as required.
- Select "Vehicle and Engine Selection" menu.
- Select year, engine, model with the appropriate qualifier if needed-for example, 49-State/California.
- Select "Diagnostic Data Link" menu.
- Select "Output Test Mode" menu.
- Select "KOER On-Demand Self-Test.
- Follow operating instructions from the NGS menu screen (example: turn key on, etc.) and perform Brake Pedal Position (BPP) and cycle the Transmission Control Switch (TCS) on and off, if equipped.
- Record all DTCs displayed.
- Service all NON-transaxle DTCs first as they can directly affect the operation of the transaxle. Road test and repeat Quick Test to verify service.