Quick Test 5.0 - Key On Engine Running (KOER)

This test provides "hard" DTCs only.
- Follow the menu screen instructions as they appear.
- If a DTC appears after the Key On, Engine Running (KOER) test, a malfunction is present.

Performing KOER Self-Test
- 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, transaxle or 49 state or California).
- Select "Diagnostic Data Link" menu.
- Select "Diagnostic Test Mode" menu. Select "KOER On-Demand Self-Test." Follow operating instructions from the NGS menu screen (example: turn key on, etc.). Perform brake on/off and cycle the Transaxle Control Switch (TCS) on and off, if equipped. Record all DTCs displayed. Repair all non-transaxle DTCs first as they can directly affect the operation of the transaxle. Road test the vehicle and repeat the Quick Test to verify the repair.

Special Test Modes
- Output Test Mode.
- PCM Reset Mode. Clearing Trouble Codes