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Home >> Cadillac >> 2017 >> XT5 Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Data Communication System - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC U1026: Lost Communication with Transfer Case Control Module >> Diagnostic Fault Information

Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
B+ U0102, U1026 U0102, U1026 - -
Ignition U0102, U1026 U0102, U1026 - -
Accessory WakeUp Serial Data U1814, U2099, U0102, U1026 U0102, U1026 - -
High Speed GMLAN Serial Data (+) U0073* U0073, U0102, U1026* U0073* -
High Speed GMLAN Serial Data (-) U0073* U0073, U0102, U1026* U0073* -
Ground - U0102, U1026 - -
* Other DTCs may set with this fault.
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