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. Refer to the On-Board Diagnostic Trouble Code Description Chart for repair information.

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 Tester 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.

PCM RESET MODE
The PCM Reset Mode permits the NGS Tester to command the PCM to clear all DTCs. When resetting the PCM, a DTC P1000 will be set in the PCM until all OBD II system or components have been monitored during OBD II Drive Cycle.
A PCM reset:
- Clears the DTCs.
- Clears the freeze frame data.
- Clears the oxygen sensor test data.
- Resets the status of the OBD II system monitors.
- Sets the DTC P1000.

PERFORMING PCM RESET
- Perform visual inspection and vehicle preparation as required.
- Select "Vehicle and Engine Selection" menu.
- Select year, engine, model with the appropriate qualifier if needed (i.e., transaxle, 49 state or California).
- Select "Generic OBD II Functions" menu.
- Select "Clearing Diagnostic Codes."
- Follow operating instructions from the NGS Tester menu screen.