Operation CHARM: Car repair manuals for everyone.

Symptom Related Diagnostic Procedures

Symptom Chart

NOTE: For vehicles with different front and rear tire pressure (such as the F-Super Duty or the E-Series), the tire pressure sensors must be trained following a tire rotation. Failure to train the sensors will result in a false low tire pressure DTC to be set and the tire pressure monitoring system (TPMS) indicator to illuminate.

For vehicles with the same tire pressure for front and rear tires, tire rotation will not affect the system.

Failure of a TPMS component may not cause the message center to display a fault message or a DTC to be stored. The Symptom Chart is a starting point to begin diagnosis of these concerns.

Symptom Chart

Symptom Chart (part 1):




Symptom Chart (part 2):




Symptom Chart (part 3):