Control module connections
NOTE:
A BOB cable assembly has not been produced for ESP. Unless otherwise stated, the test readings are those that should be obtained on the control module connector (unplugged).
= greater than; < = less than; ~ = alternating current (LP: LOGIC PROBE P = select pulse; p = visible pulse)
PIN CABLE COLOR AND COMPONENT/FUNCTION
| Pin | Cable color | Component/function | In/Out | Test conditions | Test across | Test reading | See |
|---|---|---|---|---|---|---|---|
| 1 | WH | Wheel sensor, RR: Reference ground | IN | Rotate the wheel one turn per second | 1 - 2 | 100 mV AC | REAR-WHEEL SENSORS |
| 2 | VT | Wheel sensor, RR: Signal input | IN | Rotate the wheel one turn per second | 2 - 1 | 100 mV AC | REAR-WHEEL SENSORS |
| 3 | GN | Wheel sensor, FR: Reference ground | IN | Rotate the wheel one turn per second | 3 - 5 | 100 mV AC | FRONT-WHEEL SENSORS |
| 4 | Spare | ||||||
| 5 | GY | Wheel sensor, FR: Signal input | IN | Rotate the wheel one turn per second | 5 - 3 | 100 mV AC | FRONT-WHEEL SENSORS |
| 6 | BU | Wheel sensor, FL: Reference ground | IN | Rotate the wheel one turn per second | 6 - 7 | 100 mV AC | FRONT-WHEEL SENSORS |
| 7 | RD | Wheel sensor, FL: Signal input | IN | Rotate the wheel one turn per second | 7 - 6 | 100 mV AC | FRONT-WHEEL SENSORS |
| 8 | BK | Wheel sensor, RL: Reference ground | IN | Rotate the wheel one turn per second | 8 - 9 | 100 mV AC | REAR-WHEEL SENSORS |
| 9 | YE | Wheel sensor, RL: Signal input | IN | Rotate the wheel one turn per second | 9 - 8 | 100 mV AC | REAR-WHEEL SENSORS |
| 10 | YE | Lateral acceleration sensor, lateral acceleration | IN | Cannot be measured | YAW RATE SENSOR, LATERAL ACCELERATION SENSOR | ||
| 11 | GN | Data link | IN/OUT | Tech 2 not connected | 11- - B- | 0 V | |
| Tech 2 connected and ESP selected for communication | 11 - B- | variable, approx. 10V | |||||
| 12 | OG | Yaw rate sensor, reference signal | OUT | Cannot be measured | YAW RATE SENSOR, LATERAL ACCELERATION SENSOR | ||
| 13 | Spare | ||||||
| 14 | GN/GY | Brake-lights switch | IN | Brake pedal depressed | 14 - B- | B+ | BRAKE-LIGHTS SWITCH |
| Brake pedal released | 14 - B- | 0 V | |||||
| 15 | RD/BU | Current (+15 circuit) | IN | 15 - B- | B+ | POWER SUPPLY | |
| 16 | BK | Pump-motor ground | In | B+ - 16 | B+ | CONTROL MODULE GROUND | |
| 17 | RD | Current (+30 circuit) | IN | 17 - B- | B+ | POWER SUPPLY | |
| 18 | RD | Current (+30 circuit) | IN | 18-B- | B+ | POWER SUPPLY | |
| 19 | BK | Ground | IN | B+ -19 | B+ | CONTROL MODULE GROUND | |
| 20 | Spare | ||||||
| 21 | Spare | ||||||
| 22 | RD/WH | Brake pressure sensor, power supply, 5 V | IN | Cannot be measured | BRAKE PRESSURE SENSOR | ||
| 23 | GN | Signal from wheel sensor, rear left Used by special equipment |
OUT | Cannot be measured | |||
| 24 | GN/BU | Yaw rate sensor, reference signal | OUT | Cannot be measured | YAW RATE SENSOR, LATERAL ACCELERATION SENSOR | ||
| 25 | BK/YE | Yaw rate sensor, yaw rate signal | IN | Cannot be measured | YAW RATE SENSOR, LATERAL ACCELERATION SENSOR | ||
| 26 | RD/GY (MY04) | Signal from wheel sensor, front right, for PSG16 (M04) | Cannot be measured | ||||
| 27 | PK | ESP ON/OFF switch | IN | Switch not depressed | B+ - 27 | 0 V | ESP ON/OFF SWITCH |
| Switch depressed | B+ - 27 | B+ | |||||
| 28 | BK | System ground for yaw rate sensor and pressure sensor | Cannot be measured | ||||
| 29 | WH | P-bus - | Bus information | 29 - 19 | approx. 2.5V | ||
| 30 | GN | P-bus + | Bus information | 30 - 19 | approx. 2.5V | ||
| 31 | BN/WH | Pressure sensor, brake pressure | IN | Cannot be measured | BRAKE PRESSURE SENSOR | ||