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Home >> Chevrolet >> 2017 >> Volt Premier >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Data Communication System - DTC U1817 To DTC U3012 And Scan Tool Symptoms >> Diagnostic Information and Procedures >> DTC U1879: Drive Motor Control Module 2 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+ U1879* U1879 - -
Ignition U1879* U1879* - -
Accessory Wake Up Serial Data 2 P06E4* U1879* - -
High Speed GMLAN Serial Data (+) U0073* U0073, U1879* U0073* -
High Speed GMLAN Serial Data (-) U0073* U0073, U1879* U0073* -
Powertrain High Speed GMLAN Serial Data (+) U0074* U0074, U1879* U0074* -
Powertrain High Speed GMLAN Serial Data (-) U0074* U0074, U1879* U0074* -
Ground - U1879* - -
* Other DTCs may set with this fault and multiple symptoms including a no start condition may occur.
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