Multiple Restraint System Control Unit X74 Connector End View
Pin Assignments At Plug Connector X74
| Pin | Type | Description /Signal type | Connection /Measuring notes |
|---|---|---|---|
| 1 | A | Signal, seat belt tensioner trigger + | Belt tensioner, driver |
| 2 | A | Signal, seat belt tensioner trigger - | Belt tensioner, driver |
| 3 | A | Signal, seat belt tensioner trigger + | Belt tensioner, passenger |
| 4 | A | Signal, seat belt tensioner trigger - | Belt tensioner, passenger |
| 5 | E | Terminal 15 | Fuse F18 |
| 6 | M | Ground | Ground X46 |
| 7 | A | Signal, airbag warning LED | Instrument cluster control module |
| 8 | E | USA only Signal, front passenger's seat belt contact | Hall sensor, passenger's seat belt buckle |
| 9 | E/A | K-bus signal | Connector X10116 |
| 10 | A | Signal, airbag trigger + | Inflator assembly, driver airbag |
| 11 | A | Signal, airbag trigger - | Inflator assembly, driver airbag |
| 12 | E | USA only Signal, Driver's seat belt contact | Hall sensor, Driver's seat belt buckle |
| 13 | A | Signal, airbag trigger + | Inflator assembly, passenger airbag |
| 14 | A | Signal, airbag trigger - | Inflator assembly, passenger airbag |
| 15 | Not used | ||
| 16 | A | Signal, airbag trigger + | Side airbag inflator assembly, driver |
| 17 | A | Signal, airbag trigger - | Side airbag inflator assembly, driver |
| 18 | A | Signal, airbag trigger + | Side airbag inflator assembly, passenger |
| 19 | A | Signal, airbag trigger - | Side airbag inflator assembly, passenger |
| 20 | E | Signal Sensor for LH side airbag (satellite) | Sensor for LH side airbag (satellite) |
| 21 | E | Signal Sensor for RH side airbag (satellite) | Sensor for RH side airbag (satellite) |
| 22 | Not used | ||
| 23 | Not used | ||
| 24 | Not used | ||
| 25 | Not used | ||
| 26 | Not used | ||
| 27 | Not used | ||
| 28 | Not used | ||
| 29 | Not used | ||
| 30 | Not used | ||
| 31 | Not used | ||
| 32 | Not used | ||
| 33 | A | Signal, airbag trigger + | Inflator assembly, passenger airbag |
| 34 | Not used | ||
| 35 | Not used | ||
| 36 | Not used | ||
| 37 | Not used | ||
| 38 | Not used | ||
| 39 | Not used | ||
| 40 | A | Signal, airbag trigger - | Inflator assembly, passenger airbag |
| 41 | Not used | ||
| 42 | Not used | ||
| 43 | Not used | ||
| 44 | Not used | ||
| 45 | A | Signal, airbag trigger + | Airbag inflator assy, Driver's head area |
| 46 | A | Signal, airbag trigger - | Airbag inflator assy, Driver's head area |
| 47 | A | Signal, airbag trigger + | Airbag inflator assy, passenger's head area |
| 48 | A | Signal, airbag trigger - | Airbag inflator assy, passenger's head area |
| 49 | A | Cooper S Positive activation Battery safety terminal | Generator, battery safety terminal |
| 50 | A | Cooper S Negative activation Battery safety terminal | Generator, battery safety terminal |