Roof Functions Module, High Variant A21*2B Connector End View
Pin Assignments At Plug Connector A21*2B
| Pin | Type | Description /Signal type | Connection /Measuring information |
|---|---|---|---|
| 1 | -- | Not used | |
| 2 | -- | Not used | |
| 3 | E | Locator light and ambient light | Footwell module |
| 4 | E | Signal, switch off consumer load | Footwell module |
| 5 | A | Power supply, terminal 30B | Rain/driving lights/condensation/solar sensor |
| 6 | -- | Not used | |
| 7 | E | Actuation of indicator lamp for front passenger airbag activation | Crash safety module |
| 8 | E | Ground | Rain/driving lights/condensation/solar sensor |
| 9 | E/A | Body CAN bus signal | Bus connection |
| 10 | E/A | Body CAN bus signal | Bus connection |
| 11 | -- | Not used | |
| 12 | E | from 2010_09 Power supply, terminal 30B | Fuse F32 |
| 12 | E | up to 2010_08 Power supply, terminal 30B | Fuse F66 |
| 13 | A | Switch signal, interior lighting | Footwell module |
| 14 | E | Activation, interior light | Footwell module |
| 15 | -- | Not used | |
| 16 | E/A | LIN bus signal | Siren with tilt alarm sensor |
| 17 | A | Emergency call signal | Telematics control unit Combox |
| 18 | E | Activation LED emergency call button | Telematics control unit Combox |
| 19 | -- | Not used | |
| 20 | A | Activation LED antitheft alarm system | Electrochromic interior rear view mirror |