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Home >> Chevrolet >> 2024 >> Tahoe Commercial, 4WD >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Power Door Locks And Vehicle Access - Diagnostic Information And Procedures (1 Of 2) >> Diagnostic Information and Procedures >> DTC B1769 >> Circuit/System Description

Circuit/System Description

When the S141 Liftgate Window Release Switch - Exterior is pressed, the K9 Body Control Module will provide B+ to the control circuit 6188 which energizes the PCB KR162 Liftgate Window Unlatch Relay. Battery positive voltage is supplied at all times to the relay switched input and the relay coil is always grounded. This allows battery positive voltage from the relay switched input to flow through the switch contacts and out the relay switched output to the control circuit 4089.