Test P: No Module/Network Communication

PINPOINT TEST P: NO MODULE/NETWORK COMMUNICATION - NO POWER TO THE DIAGNOSTIC TOOL

P1-P4:

Normal Operation
The diagnostic tool is connected to the data link connector (DLC) C251 to communicate with the high speed controller area network (CAN), and the medium speed CAN. If communication can not be established, the diagnostic tool and the DLC C251 must be checked for damage. If the diagnostic tool and the DLC C251 are OK, circuits SBP11 (BU/RD) must be checked for voltage and ground circuit GD116 (BK/VT) must be checked for an open condition.

Possible Causes
- DLC C251
- diagnostic tool
- circuit SBP11 (BU/RD) open or short to ground
- circuit GD116 (BK/VT) open circuit