LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mazda >> 2000 >> B2500 SX, Automatic >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls Trouble Shooting (1 Of 5) >> On-Board Diagnostic Tests >> Key ON, Engine Running Self-Test Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Key ON, Engine Running 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".
  2. Move the cursor to KOER ON-DEMAND SELF-TEST  . Press the trigger to enter this selection.
    Fig 1: Identifying NGS Tester - KOER On-Demand Self-Test
    G03988101Courtesy of MAZDA MOTORS CORP.
  3. Start engine and bring up to normal operating temperature. Press START  .
  4. Follow operating instructions from the menu, perform Brake On/Off (BOO) switch, O/D OFF switch and power steering pressure (PSP) switch cycling test, if equipped.
  5. Note any KOER DTCs.
  6. Press CANCEL  several times to return to the main menu.
scientia non olet · About LEMON Manuals