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Home >> Cadillac >> 2016 >> ELR >> Repair and Diagnosis >> Engine Performance >> System >> Data Communication System - DTC B1000 To DTC U183B >> Diagnostic Information and Procedures >> DTC U183B: Auxiliary Transmission Fluid Pump Control Module Lost Communication with Transmission 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+ U183B* U183B - -
Ignition U183B* U183B* - -
Accessory Wake Up Serial Data 2 P06E4* U183B* - -
High Speed GMLAN Serial Data (+) U0073* U0073, U183B* U0073* -
High Speed GMLAN Serial Data (-) U0073* U0073, U183B* U0073* -
Ground - U183B* - -
* Other DTCs may set and multiple symptoms including a no start condition may occur with this fault.
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