LEMON Manuals: Even more car manuals for everyone
Home >> Buick >> 1999 >> Regal LS >> Repair and Diagnosis >> Electrical >> Gauges >> Instrument Panel - Analog >> Symptom Tests >> Temperature Gauge Is Inoperative Or Inaccurate

Temperature Gauge Is Inoperative Or Inaccurate

  1. If instrument cluster diagnostic system check was performed, go to next step. If instrument cluster diagnostic system check was not performed, go to INSTRUMENT CLUSTER DIAGNOSTIC SYSTEM CHECK  under SYSTEM TESTS.
  2. Connect scan tool. Using scan tool, check for instrument cluster DTCs. If no DTCs exist, go to next step. If any DTCs exist, go to SELF-DIAGNOSTIC SYSTEM  .
  3. Turn ignition switch to RUN position. Using scan tool, establish communication with instrument cluster. Select SPECIAL FUNCTIONS under main menu. Select OUTPUT CONTROL. Select TEMPERATURE GAUGE SWEEP TEST. Temperature gauge should perform a full sweep when commanded. If temperature gauge does not operate as specified, go to next step. If temperature gauge operates as specified, locate and repair problem in Engine Coolant Temperature (ECT) sensor system. See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.
  4. Replace instrument cluster. See INSTRUMENT CLUSTER  under REMOVAL & INSTALLATION. Recheck system operation.
scientia non olet · About LEMON Manuals