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Home >> Cadillac >> 2009 >> XLR Base >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel System Displays & Gauges >> Diagnostic Information and Procedures >> DTC B3621 >> Diagnostic Fault Information

Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage
HUD Image Up Switch Signal B3620 1 1
HUD Image Down Switch Signal B3621 1 1
HUD Battery + Circuit 1 1 -
HUD Ground Circuit - 1 -
Dimmer/HUD Switch Ground Circuit - 1 1
1. Head-Up Display (HUD) Malfunction.
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