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Home >> GMC >> 2014 >> Yukon SLT, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Data Communication System >> Diagnostic Information and Procedures >> DTC U1812: Battery Energy Control Module Bus B >> Diagnostic Fault Information
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Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
SDG Module B+ Voltage U1812, U1821, U1862, U1875, U1878, U1888, U0129 U1812, U1821, U1862 - -
Wake Up Signal U1812, *B137A 06 U1812 U1813, *B137A 01 -
SDG Module Ground - U1812, U1821, U1862 - -
* Sets in the SDG module. No crank, no start. Battery pack contactors are open. drive motor generator battery control module and SDG module will both be inoperative
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