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Engine Cooling Diagnostic System Check

WARNING: This page is about a different car, the 2002 Pontiac Firebird and 2002 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.
  1. Connect scan tool to Data Link Connector (DLC). DLC is located below left side of instrument panel, to right of steering column. Turn ignition switch to RUN position. 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.
  2. Using scan tool, attempt to communicate with Instrument Panel Cluster (IPC) and Powertrain Control Module (PCM). If scan tool communicates with IPC and PCM, go to next step. If scan tool does not communicate with IPC and PCM, perform TEST B: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE  under SYSTEM TESTS.
  3. Using scan tool, select PCM DISPLAY DTCs function. If scan tool displays 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 does not display any DTCs which begin with "U", perform appropriate test in accordance with DTC retrieved. See DIAGNOSTIC TROUBLE CODE DEFINITIONS . If scan tool displays any DTCs which begin with "U", perform TEST B: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE  under SYSTEM TESTS.
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