Circuit/System Testing
WARNING: This page is about a different car, the 2008 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
- Verify that there are no air leaks in the system.
- If a leak is found, repair or replace the leaking component as necessary.
- Remove the ELC CMPRSR relay from the rear fuse block. Verify that the compressor runs continuously.
- If the compressor does not run continuously, test or replace the relay.
- Ignition ON, verify that a test lamp does not illuminate between the compressor B+ terminal of the relay connector and ground.
- If the test lamp illuminates, test the B+ circuit for a short to voltage. If the circuits test normal, replace the air suspension control module.