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Engine Cooling Diagnostic System Check

  1. Connect scan tool to Data Link Connector (DLC). DLC is located below left side of instrument panel, near steering column. If scan tool powers up, go to next step. If scan tool does not power up, perform TEST A: SCAN TOOL DOES NOT POWER UP under SYSTEM TESTS in BODY CONTROL MODULES - SEVILLE article.
  2. Using scan tool, attempt to communicate with Instrument Panel Module (IPM) and Powertrain Control Module (PCM). If scan tool communicates with IPM and PCM, go to next step. If scan tool does not communicate with IPM and PCM, perform TEST B: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE under SYSTEM TESTS in BODY CONTROL MODULES - SEVILLE article.
  3. Using scan tool, select DISPLAY DTCs function for PCM. If scan tool displays any DTCs, go to next step. If scan tool does not display DTCs, repair engine cooling system by symptom. See appropriate ELECTRIC COOLING FANS article in ENGINE COOLING.
  4. If scan tool displays any DTCs that begin with "U", perform TEST B: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE under SYSTEM TESTS in BODY CONTROL MODULES - SEVILLE article. If scan tool does not display any DTCs that begin with "U", perform appropriate test in accordance with DTC retrieved. See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.
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