Tests AL: No Communication With the Restraints Control Module

AL1:

AL1 - AL2:

AL3:

Normal Operation
The RCM communicates with the scan tool using ISO 9141 communication mode through the Data Link Connector (DLC).

Possible Causes
A no communication condition can be caused by:
^ damage to circuit 4-EE1 (GY).
^ a damaged DLC.
^ a damaged scan tool.
^ an RCM internal concern.