Diagnostic Fault Information

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
B+	U184B	U184B	-	-
Ignition	U184B	U184B	-	-
Low Speed GMLAN Serial Data	U0078*	U184B	U0078*	-
Ground	-	U184B	-	-
* Scan Tool Does Not Communicate With Low Speed GMLAN Device