Circuit Description

When a body control module (BCM) is replaced, it must be programmed to accept the analog voltage signal code of the existing Passlock™ sensor. When the BCM is replaced, the service replacement BCM is programmed to accept the first Passlock™ code it detects. If the BCM is unable to detect a valid Passlock™ code, the BCM will never end the programming sequence and DTC B3031 will continue to be set as current.

In this mode, the BCM will learn the current Passlock™ sensor code value.