Mike's Workshop Manuals
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2013
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Regal GS, Automatic Trans
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DTC U1901
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Diagnostic Fault Information
Diagnostic Fault Information
Circuit
Short to Ground
Open/High Resistance
Short to Voltage
Signal Performance
B+
1
1
-
-
Serial Data
U1901 00
U1901 00
U1901 00
-
Ground
-
1
-
-
1. S56 Radio Control Multifunction Switch Malfunction