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Home >> BMW >> 2000 >> 323Ci 2D Convertible, Automatic >> Repair and Diagnosis (Single Page) >> Body & Frame >> Sun Roof/T-Top/Convertible Top >> Convertible Top - Overview >> CVM >> Components Of The System: >> Sensors and Switches >> Cowl Lock and Tension Point Hall Sensors

Cowl Lock and Tension Point Hall Sensors

Two hall sensor switches are installed on the left side top lock drive assembly. Both sensors receive power and ground from the CVM. One switch is the soft top locked to the windshield frame input (cowl lock). The second switch is the top frame raised past the tension point input. As the slide assembly on the worm gear moves, it covers and uncovers the hall sensors to cause the high/low switching to take place.

The cowl switch input provides a low signal when the top frame is unlocked from the windshield (LED in the soft top switch will start to flash).

The tension point switch input provides a high signal when the top frame is raised past the tension point.

Fig 1: Identifying Cowl Lock And Tension Point Hall Sensors
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Fig 2: Identifying Cowl Lock And Tension Point Hall Sensors Communication Diagram
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