Test Y: No Communication With the Restraints Control Module

Y1:

Y1 - Y3:

Y3 - Y4:

Y5:

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.