Scheme 43
Type
Hall sensor (active sensor).
characteristic
When the toothed wheel rotates, a pulsed current signal (square wave) with fixed pulse ratio is generated. The frequency increases with speed.
Tooth at sensor
- Iapprox.14 mA
Cover at sensor
- I approx. 7 mA
Other information
Nothing
SIGNAL DESCRIPTION
All the values given below are between the relevant terminal stated in column 1 and terminal #A16 or #A47 (ground) unless otherwise stated in parenthesis after the table entry.
Note. It is important that the breakout box is connected and that the ground terminals have been checked before readings are taken.
| U= | DC voltage in volts (V) | U bat = | Battery voltage (V) |
|---|---|---|---|
| I = | Current in amperes (A) | U low = | Voltage approximately 0 V |
| F = | Frequency in Hertz (Hz) |
| Breakout box terminal | Terminal Control module | Signal type | Ignition on | Miscellaneous |
|---|---|---|---|---|
| #A1 | #1 | 30-feed pump motor (power supply from battery) | U = U bat | Fused with 30 A From 2008- Fused with 40 A |
| #A2 | #2 | Reserve | ||
| #A3 | #3 | Reserve | ||
| #A4 | #4 | Reserve | ||
| #A5 | #5 | Vacuum sensor, power supply | U = 5 V | |
| #A6 | #6 | Reserve | ||
| #A7 | #7 | Wheel sensor right rear, signal output | Tooth against sensor: Uapprox.U low Cover at sensor Uapprox.U bat | Measure by creating a temporary voltage supply between #1 via a resistance of 1Kohms and #7. Connect a voltmeter between #7 and ground connection #16. Turn the wheel slowly. |
| #A8 | #8 | 15-supply (power supply from ignition) | U = U bat | |
| #A9 | #9 | Wheel sensor left rear, signal output. | Tooth against sensor: Uapprox.U low Cover against sensor: Uapprox.U bat | Measure by creating a temporary voltage supply between #1 via a resistance of 1kohms and #9. Connect a voltmeter between #9 and ground connection #16. Turn the wheel slowly. |
| #A10 | #10 | Reserve | ||
| #A11 | #11 | Wheel sensor right front, signal output. | Tooth at sensor Uapprox.U low Cover against sensor: Uapprox.U bat | Measure be creating a temporary voltage supply between #1 via a resistance of 1Kohms and #11. Connect a voltmeter between #11 and ground connection #16. Turn the wheel slowly. |
| #A12 | #12 | Communication cable CAN H | U=2-3 V | |
| #A13 | #13 | Communication cable CAN L | U=2-3 V | |
| #A14 | #14 | Wheel sensor left front, signal output. | Tooth against sensor: Uapprox.U low Cover against sensor: Uapprox.U bat | Measure by creating a temporary voltage supply between #1 via a resistance of 1kohms and #14. Connect a voltmeter between #14 and ground connection #16. Turn the wheel slowly. |
| #A15 | #15 | Reserve | ||
| #A16 | #16 | Power and signal ground | U=U low | Ground terminal for the input and outlet valves and signal to the control module. |
| #A17 | #17 | Pressure build-up valve, power supply. | U=12 V | Pulse width modulated signal (PWM) max 4 A and 18 Hz. |
| #A18 | #18 | Body sensor cluster stability sensor (BSC), communication cable CAN H. | U=2-3 V | |
| #A19 | #19 | Body sensor cluster stability sensor (BSC), communication cable CAN L. | U=2-3 V | |
| #A20 | #20 | Reserve | ||
| #A21 | #21 | Pressure build-up valve, power supply | U = U bat | |
| #A22 | #22 | Body sensor cluster stability sensor (BSC), power supply | U = U bat | The stability sensor is powered by the control module. |
| #A23 | #23 | Pedal pressure sensor, signal 1 | Open: U=U low | The sensor is normally open. 0 V when the brake pedal is not actuated. 12 V when the brake pedal is actuated. |
| #A24 | #24 | Pedal pressure sensor, signal 2 | Closed: U=U bat | The sensor is normally closed. 12 V when the brake pedal is not actuated. 0 V when the brake pedal is actuated. |
| #A25 | #25 | Reserve | ||
| #A26 | #26 | Pedal position sensor, power supply | U =5 V | |
| #A27 | #27 | Pedal position sensor, ground | U=U low | |
| #A28 | #28 | Reserve | ||
| #A29 | #29 | Stability sensor, ground | U=U Ul ow | |
| #A30 | #30 | Vacuum sensor signal | U =5 V | |
| #A31 | #31 | Check valve, signal | Pulse width modulated signal (PWM) 5-10 A. | |
| #A32 | #32 | 30-feed for the valves (power supply from battery) | U = U bat | With a 30 A fuse. |
| #A33 | #33 | Front right wheel sensor, ground | U=U low | |
| #A34 | #34 | Front right wheel sensor, signal | Tooth against sensor: I approx. 14 mA ± 25% Cover against sensor: I approx. 7 mA ± 25% | When the toothed wheels rotate, the sensor generates a pulsed current signal (square wave) with fixed pulse ratio. The frequency increases with speed. For test of sensor's function, see #11 in table. |
| #A35 | #35 | Reserve | ||
| #A36 | #36 | Rear left wheel sensor, signal | Tooth at sensor: I approx. 14 mA ± 25% Cover against sensor: I approx. 7 mA ± 25% | The sensor generates a pulsed signal (square wave) with a fixed pulse ratio when the toothed wheel rotates. The frequency increases with speed. For test of sensor's function, see #9 in table. |
| #A37 | #37 | Rear left wheel sensor, ground | U=U low | |
| #A38 | #38 | Pedal position sensor, signal | 0.25-4.75 V | The value increases when the brake pedal is depressed. |
| #A39 | #39 | Reserve | ||
| #A40 | #40 | Vacuum sensor, ground | U=U low | |
| #A41 | #41 | Vacuum sensor, signal 1 | U = U bat | |
| #A42 | #42 | Rear right wheel sensor, ground | U=U low | |
| #A43 | #43 | Rear right wheel sensor, signal | Tooth against sensor: I approx. 14 mA ± 25% Cover against sensor: I approx. 7 mA ± 25% | The sensor generates a pulsed signal (square wave) with a fixed pulse ratio when the toothed wheel rotates. The frequency increases with speed. For test of sensor's function, see #7 in table. |
| #A44 | #44 | Reserve | ||
| #A45 | #45 | Front left wheel sensor, signal | Tooth against sensor: I approx. 14 mA ± 25% Cover against sensor: I approx. 7 mA ± 25% | The sensor generates a pulsed signal (quadratic wave) with a fixed pulse ratio when the pulse wheel rotates. The frequency increases with speed. For test of sensor's function, see #14 in table. |
| #A46 | #46 | Front left wheel sensor, ground | U=U low | |
| #A47 | #47 | Power and signal ground | U=U low | Ground terminal for the pump motor. |