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Home >> Cadillac >> 2007 >> CTS V >> Repair and Diagnosis >> External Pages >> Different car >> Section 570 (Data Communication System) >> Diagnostic Information and Procedures >> DTC U1823 >> Circuit/System Verification
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Circuit/System Verification

WARNING: This page is about a different car, the 2009 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.

With a scan tool, attempt to communicate with all modules.

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