When Monitored And Set Conditions
NOTE:
This diagnostic test checks the CAN Bus circuits between the Data Link Connector (DLC) and the Security Gateway (SGW) Module.
This diagnostic will not have Diagnostic Trouble Codes (DTCs) to assist in determining no scan tool communication with the vehicle.
Default Actions:
- Vehicle may start and run.
- The scan tool will not communicate with the SGW Module or any other CAN Bus module.
| Possible Causes |
|---|
| INOPERATIVE SCAN TOOL |
| POOR TERMINAL CONTACT OR CONNECTOR CONNECTION(S) |
| DATA LINK CONNECTOR (DLC) |
| DATA LINK CONNECTOR FUSED B (+) CIRCUIT OPEN OR HIGH RESISTANCE |
| DATA LINK CONNECTOR GROUND CIRCUIT OPEN OR HIGH RESISTANCE |
| CAN C (+) BUS CIRCUIT OPEN, SHORTED OR HIGH RESISTANCE |
| CAN C (-) BUS CIRCUIT OPEN, SHORTED OR HIGH RESISTANCE |
| CAN IHS (+) BUS CIRCUIT OPEN, SHORTED OR HIGH RESISTANCE |
| CAN IHS (-) BUS CIRCUIT OPEN, SHORTED OR HIGH RESISTANCE |
| CAN C (+) AND (-) BUS CIRCUITS SHORTED TOGETHER |
| CAN IHS (+) AND (-) BUS CIRCUITS SHORTED TOGETHER |
| SECURITY GATEWAY (SGW) MODULE |