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

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

X1-X3:

X3-X5:

X6:

Normal Operation
The diagnostic tool communicates with the restraints control module (RCM) 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.
- a faulty data link connector (DLC).
- a faulted RCM.