Test A: The Smart Junction Box (SJB) Does Not Respond To The Diagnostic Tool

PINPOINT TEST A: THE SMART JUNCTION BOX (SJB) DOES NOT RESPOND TO THE DIAGNOSTIC TOOL

A1-A3:

Normal Operation
The SJB communicates with the diagnostic tool through the international standards organization (ISO) 9141 communication network, circuit 70 (LB/WH). If circuit 70 (LB/WH) becomes open or shorted to ground communications to that module are not possible.

Possible Causes
- ISO 9141 communication network circuit 70 (LB/WH) open
- SJB C2280d
- SJB