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Home >> Pontiac >> 2001 >> Aztek Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 14 (Body Control Modules) >> Self-Diagnostic System >> Engine Cooling System Diagnostic System Check
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Engine Cooling System Diagnostic System Check

WARNING: This page is about a different car, the 2002 Chevrolet Monte Carlo, 2002 Chevrolet Impala, 2001 Chevrolet Monte Carlo, and 2001 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Use this check as starting point for any engine cooling system complaint.
  1. Turn ignition switch to OFF position. 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, go to TEST D: SCAN TOOL DOES NOT POWER UP  under SYSTEM TESTS.
  2. Turn ignition switch to RUN position. Try to establish scan tool communication with Instrument Panel Cluster (IPC) and Powertrain Control Module (PCM). If communication with IPC and PCM is established, go to next step. If communication with IPC and/or PCM is not established, go to TEST C: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE  under SYSTEM TESTS.
  3. Select DISPLAY DTC function for PCM. Record all displayed DTCs and status of displayed DTCs. If any DTCs are displayed, go to next step. If no DTCs are displayed, repair cooling system as necessary.
  4. Using scan tool, retrieve DTCs. If DTCs U1000-U1305 are not present, go to DIAGNOSTIC TROUBLE CODE DEFINITIONS . Repair as necessary. If DTCs U1000-U1305 are present, go to TEST C: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE  under SYSTEM TESTS.
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