Test Y: No Communication With the Restraints Control Module (RCM)

PINPOINT TEST Y: NO COMMUNICATION WITH THE RESTRAINTS CONTROL MODULE (RCM)

Y1-Y3:

Y3-Y4:

Y5:

Y6:

Normal Operation
The diagnostic tool communicates with the restraints control module (RCM) monitors through the data link connector (DLC) C251 pin 7, circuit 70 (LB/WH).

Possible Causes
A no communication fault with the RCM can be caused by:
- wiring, terminals or connectors.
- open fuse.
- a faulty DLC.
- a faulted RCM.