DTC P1915 Cadillac

Description

The control modules transmit and receive information via a standardized serial communication method - CAN (Control Area Network). The electric parking brake (EPB) transmits information on the controller area network (CAN), which the other systems can use. The Brake control module (BCM) retrieves the information that can then be used in different brake functions. The Brake control module (BCM) checks that the communication is correct via an internal diagnostic test mode (DTM). The diagnostic trouble code (DTC) is stored if the control module detects: The signal deviates from the expected value. The control modules test for the diagnostic trouble code (DTC) starts in the event of: Ignition switch position II. Note! The control module can only detect the fault once the test has been started and the diagnostic trouble code (DTC) is stored when the conditions are met.