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Home >> Cadillac >> 2000 >> DeVille DTS >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Symptom Tests >> VF Display Inoperative

VF Display Inoperative

CAUTION: This procedure will diagnose the 54-volt Vacuum Fluorescent (VF) display supply circuit.
  1. If lighting diagnostic system check was performed, go to next step. If lighting diagnostic system check was not performed, go to LIGHTING DIAGNOSTIC SYSTEM CHECK  .
  2. Turn ignition off. Disconnect Instrument Panel Integration Module (IPM). Turn ignition on. Using DVOM, measure voltage of 54-volt VF display supply circuit between ground and IPM connector C2 terminal B6 (Red wire). See Figure . If voltage is not approximately 54-volts, go to next step. If voltage is approximately 54-volts, go to step  5 .
  3. Check for open, short to ground or high resistance in Red wire between IPM connector C2 terminal B6 and Instrument Panel Cluster (IPC) connector C1 terminal A12. If circuit is okay, go to next step. If faulty circuit is found and repaired, go to step  8 .
  4. Check for poor connections at IPC connector. If connections are okay, go to step  6 . If faulty connections are found and repaired, go to step  8 .
  5. Check for poor connections at IPM connector. If connections are okay, go to step  7 . If faulty connections are found and repaired, go to step  8 .
  6. Replace IPC. See INSTRUMENT PANEL CLUSTER  under REMOVAL & INSTALLATION. After repairs, go to step  8 .
  7. Replace IPM. See INSTRUMENT PANEL MODULE under REMOVAL & INSTALLATION in BODY CONTROL MODULES - DEVILLE article. After repairs, go to next step.
  8. After repairs, recheck operation of VF display. If VF display operates properly, repair is complete. If VF display does not operate properly, go to step  2 .
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