Test I: Air Suspension System Inoperative Without DTCs and With the Vehicle at Rest
Test I: Air Suspension System Inoperative Without DTCs and With the Vehicle at RestNormal Operation
The scan tool is used to communicate with the air suspension module and run the self-test. The air suspension module is supplied fused battery voltage through battery junction box (BJB) fuse 47 (30A) along circuit SBB74 (WH/RD), and fused ignition circuit through BJB fuse 65 (10A) along circuit CBB65 (WH/OG). A ground path is provided for the module along circuits GD120 (BK/GN) and GD133 (BK). The air suspension module communicates with the other modules along the high speed communication area network (HS-CAN). The air suspension module must receive inputs from several different components before it will allow the vehicle dynamic suspension system to operate.
Possible Causes
^ Fuse(s)
^ Circuit open
^ Door switch is indicating door ajar status
^ Vehicle speed
^ System is not enabled
^ Air suspension module
I1:
