With Scan Tool

Prior to performing diagnosis tests, check and ensure that all fuses and fuse links are in good condition. Check all connectors that link the system to the main body wiring harness. These include the compressor, height sensor, control module, relay and underbody to trunk and load leveling harness to main harness. Check all air lines, connectors and other components for correct installation.

Refer to Steering and Suspension/Suspension/Electronic Level/Diagrams/Electrical for system wiring circuits when performing diagnosis of system.

To properly perform the following diagnosis and testing the use of a DRBII readout tool or equivalent is required, follow tool manufacturers instructions for proper installation of the tool prior to testing Automatic Load Leveling System.