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Diagnostic Procedure Sequence

WARNING: This page is about a different car, the 2001 Mazda B4000, 2001 Mazda B3000, 2001 Mazda B2500, and 2001 Mazda B2300. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Diagnostic procedure sequence should be followed for diagnosing module communications network.
  1. Verify customer's original problem. Inspect vehicle for any obvious electrical component wiring or connector damage.
  2. Inspect 16-pin Data Link Connector (DLC) for damage. DLC is located below driver's side of instrument panel, to right of steering column. If connector is okay, go to next step. If connector is damaged, repair as necessary and go to next step.
  3. Ensure transmission is in Park. Ensure all controls and switches are off. Connect New Generation Star (NGS) Tester (49-T088-0A0) to DLC.
  4. Check that all doors and hood are fully closed. Perform proper hookup procedure and vehicle selection for scan tool. See EQUIPMENT HOOKUP .
    NOTE: DO NOT touch any handle or switch that may produce a module input unless instructed to do so by the scan tool.
  5. Retrieve continuous Diagnostic Trouble Codes (DTCs) from selected module. See RETRIEVING DIAGNOSTIC TROUBLE CODES . Record all continuous DTCs.
  6. Clear continuous DTCs from selected module. See CLEARING DIAGNOSTIC TROUBLE CODES .
  7. Perform on-demand self-test on selected module. See ON-DEMAND SELF-TEST . Record all DTCs obtained during on-demand self-test.
  8. If no DTCs were obtained when retrieving continuous DTCs or performing on-demand self-test, problem is not related to module communications network. Return to test procedure that sent you here and continue diagnosis by symptom.
  9. If DTCs were obtained when retrieving continuous DTCs or performing on-demand self-test, proceed to GENERIC ELECTRONIC MODULE (GEM) DTC IDENTIFICATION  table and proper DTC testing procedure.
NOTE: When performing a test procedure, the technician may be instructed to retrieve Parameter Identification (PID) information on a specified component. For more information on retrieving PID, see RETRIEVING PARAMETER IDENTIFICATION (PID) INFORMATION . It may also be necessary to verify correct version of module being tested. For module version identification procedure, see MODULE VERSION IDENTIFICATION .
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