Pin Assignment
The DSC control unit is integrated into the vehicle electrical system via a 38-pin connector.
DSC UNIT PIN ASSIGNMENT X1746, 38-PIN
| Pin | Type | Description |
|---|---|---|
| 1 | V | Power supply for the DSC control unit, terminal 30 |
| 2 | - | - |
| 3 | A | Signal for converted wheel speed, rear right |
| 4 | V | Signal from the DSC button in centre console switch cluster (SZM) |
| 5 | A | Signal from brake fluid level switch |
| 6 | E | Signal from wheel speed sensor, front right |
| 7 | V | Power supply for the DSC control unit, terminal 30g active |
| 8 | E | Signal from brake pad wear sensor on rear axle |
| 9 | A | Power supply for brake pressure sensors (only in conjunction with ACC) |
| 10 | A | Earth connection for brake pad wear sensors and brake pressure sensors |
| 11 | - | - |
| 12 | E | Signal from brake pressure sensor on front axle (only in conjunction with ACC) |
| 13 | M | Earth for the DSC control unit, terminal 31 (pump motor) |
| 14 | E/A | Chassis CAN Low |
| 15 | A | Signal for converted wheel speed, rear left |
| 16 | - | - |
| 17 | - | - |
| 18 | A | Power supply for wheel speed sensor, front right |
| 19 | A | Power supply for wheel speed sensor, rear right |
| 20 | E | Signal from wheel speed sensor, rear left |
| 21 | A | Power supply for wheel speed sensor, front left |
| 22 | E | Signal from wheel speed sensor, front left |
| 23 | E | Signal from brake pressure sensor on rear axle (only in conjunction with ACC) |
| 24 | E/A | Powertrain CAN Low |
| 25 | V | Power supply for the DSC control unit, terminal 30 |
| 26 | E/A | Chassis CAN High |
| 27 | A | Signal for converted wheel speed, front right |
| 28 | A | Signal for converted wheel speed, front left |
| 29 | E | Signal from brake pad wear sensor on front axle |
| 30 | E | Signal from brake light switch |
| 31 | E | Signal from wheel speed sensor, rear right |
| 32 | V | Power supply for the DSC sensor (and DSC sensor 2 with Active Steering) |
| 33 | V | Power supply for wheel speed sensor, rear left |
| 34 | - | - |
| 35 | E | Wake-up wire for PT-CAN (terminal 15) |
| 36 | - | - |
| 37 | E/A | Powertrain CAN High |
| 38 | M | Earth for the DSC control unit, terminal 31 |
| A = Output E = Input E/A = Input and output M = Earth V = Supply For current specifications regarding pin assignment, please refer to BMW diagnosis system |
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