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Home >> Chevrolet >> 2022 >> Tahoe PPV, RWD >> Repair and Diagnosis >> Accessories & Equipment >> Anti-Theft Systems >> Vehicle Access - Diagnostic Information And Procedures (2 Of 2) >> Diagnostic Information and Procedures >> DTC B19C8 or B19C9 >> Circuit/System Description

Circuit/System Description

The K9 Body Control Module provides the B27LF Front Side Door Outside Handle Switch - Left with approximately 7.5 V to the signal circuit 2675. Ground is applied at all times to the B27LF Front Side Door Outside Handle Switch - Left. When the switch is pressed, ground is applied to the K9 Body control Module through signal circuit 2675. The K9 Body Control Module will detect the voltage drop in the signal circuit 2675 and will command the doors to perform the LOCK/UNLOCK command.

The K9 Body Control Module provides the B27RF Front Side Door Outside Handle Switch - Right with approximately 7.5 V to the signal circuit 2676. Ground is applied at all times to the B27RF Front Side Door Outside Handle Switch - Right. When the switch is pressed, ground is applied to the K9 Body control Module through signal circuit 2676. The K9 Body Control Module will detect the voltage drop in the signal circuit 2676 and will command the doors to perform the LOCK/UNLOCK command.