Module, Air Suspension Control (ASCM): Installation

WARNING: This page is about a different car, the 2018 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

Courtesy of CHRYSLER GROUP, LLC

Slide the Air Suspension Control Module (ASCM) (2) into position making sure the latches secure the ASCM.
Connect the wire harness connectors to the ASCM (2).
From behind/under the LF seat, install the cover panel on the electronic module tub (4).
Connect the negative battery cable. Refer to CABLES, BATTERY, INSTALLATION .
Perform the Curb Height Measurement to get values for input to the scan tool in the next step Refer to WHEEL ALIGNMENT, STANDARD PROCEDURE .
NOTE:
Make sure the scan tool preferences are set to metric. When writing the measured values to the Air Suspension Control Module (ASCM) they will need to be in millimeters.
With a scan tool, using the routines under the ASCM, perform the following:
- Command the vehicle to Normal Ride Height (NRH).
- Perform the Curb Height Measurement and record the values for input to the scan tool. Refer to WHEEL ALIGNMENT, STANDARD PROCEDURE .
- Perform the Write Suspension Height Values routine and input measurements recorded as prompted by scan tool.
- Command the vehicle to Normal Ride Height (NRH) again.
- Perform the Curb Height Measurement again and verify specifications. Refer to WHEEL ALIGNMENT, STANDARD PROCEDURE .
- Run the Air Mass Calculation routine on the air suspension system.
- If necessary, add to the system or deflate to atmosphere using the ASCM routines, then repeat the Air Mass Calculation routine again until the system responds with Air Mass OK (188 to 216 bar-liters).
- Run the Height Sensor Check routine on the air suspension system.
- Enable the air suspension system.
Perform the ASCM VERIFICATION TEST. Refer to STANDARD PROCEDURE .