Key On Engine Running (KOER) Self-Test Procedure

NOTE:
- Make sure the A/C switch is OFF during KOER Self-Test. If the A/C switch is ON during this test, DTC P1464 will be indicated on the NGS tester.
- The brake pedal must be depressed and released after KOER Self-Test is initiated. If not performed, DTC P1703 will be indicated on the NGS tester.
- The steering wheel must be turned to the right and left after KOER Self-Test is initiated. If not performed, DTC P1650 will be indicated on the NGS tester.
- Start the engine and bring up to normal operating temperature before running the KOER Self-Test.




1. Perform the "New Generation Star (NGS) tester hook-up procedure".
New Generation Star Tester Hook-Up Procedure




2. Perform the "Reading DTC Procedure".
Retrieve Continuous DTC Self-Test Procedure




3. Move the cursor to KOER ON-DEMAND SELF-TEST.
Press the trigger to enter this selection.

4. Start engine and bring up to normal operating temperature.
Press START.

5. Follow operating instruction from the menu and perform Brake On/Off (BOO), O/D OFF switch and PSP cycling test, if equipped.

6. NOTE any KOER DTCs.
7. Press CANCEL several times to return to the main menu.