The most common problem with the Torsion-Level (T-L) is electrical. Mechanically, it is very strong. Rarely, will something mechanical break, so these trouble shooting guidelines will concentrate on the electrical circuit aspect of a non-functional T-L. NOTE: The following diagnostic procedures are gleaned from "Master Serviceman':s Training Book", "Packard Service Manual" and the webmaster's own experience with his 1955 Patrician. Use at your own risk!!!
| Subsystem | Symptom | Diagnostic |
| brake lights | Step on brake pedal. Stop lights do NOT come on. | Blown stoplight fuse on fuse block OR stop light prong switch defective OR broken wire or disconnect somewhere between fuse block and stop lights. |
| Level control* | Ground "A" or "B" terminal. Compensator motor does NOT activate. | Blown 20-amp fuse near starter OR open circuit between starter solenoid and "BATT" terminal on controller OR defective compensator motor, limit switches or solenoids. |
| Level control* | "BATT" terminal not hot | Underdash switch off or defective OR open circuit between stoplight prong switch and "BATT" terminal. |
| Level control* | No continuity between "BATT" and "A" or "B" terminals when (disconnected) control arm swung from to one side and held there for at least 15 seconds . | Defective Level control box |
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