LIN Communication

The LIN is a dedicated single wire communication network. The LIN circuit is used between the rear parking aid camera and the BCM. The modules use broadcast serial communication over the LIN, with the BCM sending a message, and the rear parking aid camera either replying to or simply receiving certain messages. The BCM is the master module on the LIN, and it sets and stores Diagnostic Trouble Codes (DTCs) for the rear parking aid camera and the communication network.

The messages sent from the BCM to the rear parking aid camera are:

• Liftgate ajar status
• Camera configuration data
• Manual zoom request
• Enable/disable visual park aid alert
• Enable/disable fixed guidelines
• Enable/disable active guidelines
• Parking aid audible warning status
• Parking aid sensor distance to object data
• Steering wheel angle data

The reply messages sent from the rear parking aid camera to the BCM are:

• Camera status
• Zoom status
• Visual park aid alert status
• Fixed guideline status
• Active guideline status
• Camera part number data