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Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Serial Data Communication Enable U2099 U0100-U02FF, U1653 1 -
Chassis High Speed GMLAN Serial Data (+)
or High Speed GMLAN Serial Data (+) (2)
U0077 U0100-U02FF, U1653 U0077 -
Chassis High Speed GMLAN Serial Data (-)
or High Speed GMLAN Serial Data (-) (2)
U0077 U0100-U02FF, U1653 U0077 -
1. Battery drain condition may occur.