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Home >> Cadillac >> 2016 >> ELR >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Data Communication System - DTC U183C To DTC U2615 And Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC U186A: Electronic Brake Control Module Lost Communication with Engine Control Module >> Diagnostic Fault Information
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Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
B+ U186A* U186A* - -
Ignition U186A* U186A* - -
Accessory Wake Up Serial Data 2 P06E4* U186A* - -
High Speed GMLAN Serial Data (+) U0073* U0073, U186A* U0073* -
High Speed GMLAN Serial Data (-) U0073* U0073, U186A* U0073* -
Ground - U186A* - -
* Other DTCs may set, and multiple symptoms including no start may occur.
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