LEMON Manuals: Even more car manuals for everyone
Home >> Saturn >> 2000 >> LS2 Standard >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Cooling Fan >> Engine Cooling Fan System - Troubleshooting >> Electric Cooling Fan Circuit Diagnosis >> 3.5L "W" Body (Intrigue) >> Diagnostic System Check

Diagnostic System Check

  1. Install scan tool. If scan tool powers up, go to next step. If scan tool does not power up, see SCAN TOOL DOES NOT POWER UP in appropriate BODY CONTROL MODULES article.
  2. Turn ignition on, engine off. Try to establish scan tool communication with Instrument Cluster (IC) and Powertrain Control Module (PCM). If communication with IC and PCM is established, go to next step. If communication with IC and PCM is not established, see SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE in appropriate BODY CONTROL MODULES article.
  3. Select display DTC function for PCM. Record all displayed DTCs and status of displayed DTCs. If DTCs are displayed, go to next step. If no DTCs are displayed, see COOLING FAN INOPERATIVE  or COOLING FAN ALWAYS ON  .
  4. If scan tool does not display DTCs beginning with "U", see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If scan tool displays DTCs beginning with "U", see SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE in appropriate BODY CONTROL MODULES article.
scientia non olet · About LEMON Manuals