Air Suspension Module
The air suspension module monitors the inputs and provides outputs and diagnostic information for the following systems:
- Vehicle dynamic suspension
- Variable assist power steering (VAPS)
The air suspension module provides the instrument cluster with a ground circuit in order to illuminate the air suspension warning indicator in the instrument cluster and also receives door ajar information from the DDM. The air suspension module controls the VAPS actuator on the power steering gear which increases or decreases the power steering assist depending on the vehicle speed received on a dedicated vehicle speed circuit hardwired from the powertrain control module (PCM).