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Home >> Chevrolet >> 2001 >> Lumina >> Repair and Diagnosis >> Electrical >> Starter >> Starting System >> Self-Diagnostic System >> Engine Electrical Diagnostic System Check

Engine Electrical Diagnostic System Check

  1. Perform battery test and inspection. See BATTERY TESTING & INSPECTION  under ON-VEHICLE TESTING. If battery passed test, go to next step. If battery did not pass test, replace battery.
  2. Connect scan tool to Data Link Connector (DLC). Turn ignition switch to RUN position. If scan tool powers up, go to next step. If scan tool does not power up, see BODY CONTROL MODULES - LUMINA article in ACCESSORIES & EQUIPMENT.
  3. Using scan tool, attempt communication with Powertrain Control Module (PCM) on the class 2 serial data circuit. If scan tool communicates with PCM, go to next step. If scan tool does not communicate with PCM, repair communications concern. See BODY CONTROL MODULES - LUMINA article in ACCESSORIES & EQUIPMENT.
  4. Using scan tool, select DISPLAY DTCs function for PCM. Record all DTCs displayed and DTC status. If scan tool displayed any DTCs, perform appropriate test in accordance with DTC retrieved. See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If scan tool does not display any DTCs, repair starting system by symptom. See SYMPTOM INDEX  table under SYSTEM TESTS.
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