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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 378 (Sunroof) >> Diagnostic Information and Procedures >> Power Sunroof/Sunshade Malfunction >> Diagnostic Fault Information

Diagnostic Fault Information

WARNING: This page is about a different car, the 2022 Cadillac CT5. However, it is still accessible from the selected car via links, so may be relevant.
Circuit Circuit Function Short to Ground Open/High Resistance Short to Voltage Signal Performance
35404 B+ U1121, 1, 2 U1121, 1, 2 U1121, 1, 2 -
5033 5 V Reference 2 2 2 -
2854 Serial Data U1121, U0169 U1121, U0169 U1121, U0169 -
3781 Control 2 2 2 -
3782 Control 2 2 2 -
5034 Signal 2 2 2 -
5124 Signal 2 2 2 -
128 Low Reference 2 2 2 -
2350 Ground U1121, 1, 2 U1121, 1, 2 U1121, 1, 2 -
1. Power Sunroof Malfunction
2. Power Sunshade Malfunction