SD Card Module Service Precautions (With Display Audio)

SD Card Module Service Precautions (With Display Audio) 

The audio unit and the SD card module cannot be substituted separately for testing purposes. You can substitute a combined audio unit and SD card module with a known-good combined audio unit and SD card module. When the audio unit and the SD card module are connected to a vehicle, and powered up for the first time, the audio unit and the SD card module go through a mating process where the SD card module writes the audio unit's serial number to its memory. The audio unit and the SD card module are available separately.

When you get a replacement audio unit, it does not come with an SD card module, but the unit is able to mate one time to an SD card module. When you connect the audio unit to the SD card module and power it up for the first time, the two components are mated. Once the audio unit is mated, it does not accept an SD card module that is already mated to another audio unit. It does accept a new SD card module.

The SD card module is removable from the audio unit. If the audio unit is replaced, install the original SD card module into the new audio unit. When you transfer the SD card module, the system data, the application program, and all the customer's settings are transferred.

The SD card module is able to mate more than once, allowing you to transfer the SD card module with the customer's information to a new audio unit. The SD card module must mate to a new audio unit. It cannot mate to an audio unit that has been mated to another SD card module.