Test X: No Communication With The Restraints Control Module

X1:

X1 - X3:

X3 - X4:

X5:

Normal Operation
The scan tool communicates with the Restraints Control Module (RCM) monitors through the data link connector pin 7, 70 (LB/WH).

Possible Causes
A no communication with the RCM fault can be caused by:
^ Wiring, terminals, or connectors.
^ A faulty Data Link Connector (DLC).
^ A faulty RCM.