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Home >> Cadillac >> 2021 >> CT4 Sport, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 21 (Wiring Systems And Power Management - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC B1B12 >> Circuit/System Description

Circuit/System Description

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The K9 Body Control Module (BCM) controls the KR76 Accessory Time Delay Cutoff Relay by applying voltage to the control circuit 4083 and is grounded by ground circuit 1350. The Relay B+ circuit Terminal 30 by circuit 342, when the relay contact is switched closed by control circuit 4083 the relay control terminal 87 supplies B+ voltage to fuse F25DA and circuit breakers F1DB and F2DB. The control circuit 4083 stays energized for up to 10 min provided the driver door is not open.

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