System and method for diagnosing a suspension

A non-transitory computer-readable storage medium embodying programmed instructions which, when executed by a processor, are operable for performing a method comprising:

• applying a first force sequence across a first axle suspension on a vehicle;
• measuring a first response of the first axle suspension to the first force sequence using at least one sensor on the vehicle;
• applying a second force sequence across the first axle suspension;
• measuring a second response of the first axle suspension to the second force sequence using the at least one sensor on the vehicle;
• measuring a dynamic response of the first axle suspension when one of the first force sequence or the second force sequence is released;
• and
• determining a status of the first axle suspension based on at least one of the first response, the second response, or the dynamic response.

A vehicle comprising:

• a body defining a passenger cabin;
• a first suspension corresponding to a first axle and configured to support the body;
• a second suspension corresponding to a second axle and configured to support the body;
• a first suspension actuator associated with the first axle;
• a second suspension actuator associated with the second axle;
• at least one sensor configured to measure movement of the first axle, the second axle, or the body;
• a controller in communication with the first suspension actuator, the second suspension actuator, and the at least one sensor, wherein the controller is configured to:
• apply a first force sequence across a first axle suspension;
• measure a first response of the first axle suspension to the first force sequence with at least one sensor on the vehicle;
• apply a second force sequence across the first axle suspension;
• measure a second response of the first axle suspension to the second force sequence using the at least one sensor on the vehicle;
• measure a dynamic response of the first axle suspension when one of the first force sequence or the second force sequence is released;
• and
• determine a status of the first axle suspension based on at least one of the first response, the second response, or the dynamic response.