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Home >> Cadillac >> 2014 >> Escalade Base, AWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Data Communication System >> Diagnostic Information and Procedures >> DTC U1862: Battery Energy Control Module Lost Communication with Serial Data Gateway Module >> 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 *U1862, U1888, U1878, U1875, U1821, U1812, U0129 U1862, U1821, U1812 - -
SDG Module Serial Data Communication Enable U1862 U1862 - -
High Speed GMLAN Serial Data Bus - *U1862, U1888, U1886, U1885, U1879, U1878, U1876, U1875, U1866, U0140, U0129, U0102, U0101, U0100 *U1888, U1878, U8175, U0129 *U1862, U1888, U1886, U1885, U1879, U1878, U1876, U1875, U1866, U0140, U0129, U0102, U0101, U0100 -
High Speed GMLAN Serial Data Bus - *U1862, U1888, U1886, U1885, U1879, U1878, U1876, U1875, U1866, U0140, U0129, U0102, U0101, U0100 *U1888, U1878, U8175, U0129 *U1862, U1888, U1886, U1885, U1879, U1878, U1876, U1875, U1866, U0140, U0129, U0102, U0101, U0100 -
SDG Module Ground - U1862, U1821, U1812 - -
Drive Motor Generator Battery Control Module B+ Voltage *U1862, U1888, U1878, U1875, U1821, U1812, U0129 **U1888, U1878, U1875, U0129 - -
* No crank, no start. Battery pack contactors are open. drive motor generator battery control module and SDG module will both be inoperative.
** No crank, no start. Battery pack contactors are open. drive motor generator battery control module is inoperative.
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