Operation CHARM: Car repair manuals for everyone.

PCM2 CD Changer



Control unit replacement

PCM2

The PCM2 is provided in 'active production mode' in new vehicles and as a spare part. Each time the vehicle is started, the chassis code that is stored is compared with the code in the instrument cluster. If no match is found, the device switches off after 30 seconds and the 'PROTECTED' message appears in the display. The device is not operational.

If a match is found, the device is operational.