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Home >> Mazda >> 1998 >> 626 DX L4-2.0L DOHC >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Scan Tool Testing and Procedures >> Key On Engine Off (KOEO) Self-Test Procedure
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Key On Engine Off (KOEO) Self-Test Procedure

NOTE: Make sure the A/C switch is OFF during KOEO Self-Test. If the A/C switch is ON during this test, DTC P1464 will be indicated on the NGS tester.




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




2. Perform the "Reading DTC Procedure".




3. Move the cursor to KOEO ON-DEMAND SELF-TEST. Press the trigger key to enter this selection.
4. Follow operating instruction from the menu.
5. NOTE: any KOEO DTCs.
6. Press CANCEL. Perform KOER Self-Test.