Test F: The Air Suspension Module Does Not Respond To The Diagnostic Tool

PINPOINT TEST F: THE AIR SUSPENSION MODULE DOES NOT RESPOND TO THE DIAGNOSTIC TOOL

F1-F2:

F2-F3:

Normal Operation
The air suspension module communicates with the diagnostic tool through the standard corporate protocol (SCP) communication network, circuits 914 (TN/OG) and 915 (PK/LB). Check the SCP circuits 914 (TN/OG) and 915 (PK/LB) between the air suspension module C2131b and the data link connector (DLC) C251. The total resistance values must not be more than 5 ohms. If the resistance is more than 5 ohms, there is an open in the SCP network circuits, damage to the DLC C251, the air suspension module C2131b, or a problem in the in-line connectors.

Possible Causes
- SCP data plus circuit 914 (TN/OG) open
- SCP data minus circuit 915 (PK/LB) open
- air suspension module C2131b
- air suspension module