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Preliminary Procedure

WARNING: This page is about a different car, the 2002 Mazda B4000, 2002 Mazda B3000, and 2002 Mazda B2300. However, it is still accessible from the selected car via links, so may be relevant.
  1. Connect NGS tester to Data Link Connector (DLC). Using NGS tester, perform DATA LINK DIAGNOSTIC TEST. If NGS tester does not communicate with vehicle, see MODULE COMMUNICATIONS NETWORK - PICKUP article in COMMUNICATIONS DEVICES to diagnose network.
  2. If NGS tester displays SYSTEM PASSED for GEM, retrieve and record continuous DTCs. Erase continuous DTCs. Perform GEM On-Demand self-test diagnostics using NGS tester. If any GEM DTCs are retrieved, perform appropriate test under SYMPTOM TESTS. See GENERIC ELECTRONIC MODULE (GEM) DTC INDEX  table. If no DTCs are retrieved, perform appropriate test according to symptom. See SYMPTOM INDEX  table under SYSTEM TESTS.
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