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Home >> Buick >> 2020 >> Enclave Premium, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Data Communications - Diagnostic Information And Procedures (2 Of 2) >> Diagnostic Information and Procedures >> Scan Tool Does Not Communicate with Vehicle >> Diagnostic Fault Information

Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
B+ 1 1 - -
Ignition 1 1 - -
High Speed GMLAN Serial Data (+) 1 1 1 -
High Speed GMLAN Serial Data (-) 1 1 1 -
Object High Speed GMLAN Serial Data (+) 1 1 1 -
Object High Speed GMLAN Serial Data (-) 1 1 1 -
Chassis High Speed GMLAN Serial Data (+) 1 1 1 -
Chassis High Speed GMLAN Serial Data (-) 1 1 1 -
Low Speed GMLAN Serial Data 1 1 1 -
Ground - 1 - -
Ground (X84 Data Link Connector terminal 5) - 1 - -
1. No communication with the vehicle.