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)
COMPONENT FUNCTION - TEST CONDITIONS
| Pin | Component/function | In/Out | Test conditions | Test across | Test reading | See |
|---|---|---|---|---|---|---|
| 1 | Pump motor, power ground | In | B+ - 4 | B+ | See RETURN PUMP | |
| 2 | +30 voltage, power | IN | 2 - B- | B+ | See POWER SUPPLY | |
| 3 | Current (+30 circuit) | IN | 3 - B- | B+ | See POWER SUPPLY | |
| 4 | Ground | IN | B+ - 4 | B+ | See CONTROL MODULE GROUND | |
| 5 | Wheel sensor, FL: signal input | IN | Rotate the wheel one turn per second | 5 - 6 | >100 mV AC | See SPEED SENSOR, FRONT WHEEL |
| 6 | Wheel sensor, FL: reference ground | IN | Rotate the wheel one turn per second | 5 - 6 | >100 mV AC | See SPEED SENSOR, FRONT WHEEL |
| 7 | Wheel sensor, RL: signal input | IN | Rotate the wheel one turn per second | 7 - 27 | >100 mV AC | See SPEED SENSOR, REAR WHEEL |
| 8 | Wheel sensor, RR: reference ground | IN | Rotate the wheel one turn per second | 29 - 8 | >100 mV AC | See SPEED SENSOR, REAR WHEEL |
| 9 | Wheel sensor, FR: reference ground | IN | Rotate the wheel one turn per second | 10 - 9 | >100 mV AC | See SPEED SENSOR, FRONT WHEEL |
| 10 | Wheel sensor, FR: signal input | IN | Rotate the wheel one turn per second | 10 - 9 | >100 mV AC | See SPEED SENSOR, FRONT WHEEL |
| 11 | 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 | Spare | |||||
| 13 | Spare | |||||
| 14 | P-bus - | Bus information | 14 - 4 | approx. 2.5V | ||
| 15 | System ground for yaw rate sensor | Cannot be measured | ||||
| 16 | Yaw rate sensor, yaw rate signal | IN | Cannot be measured | See YAW RATE SENSOR (658) | ||
| 17 | Spare | |||||
| 18 | Yaw rate sensor, reference signal | OUT | Cannot be measured | See YAW RATE SENSOR (658) | ||
| 19 | Signal from wheel sensor, rear left Used by special equipment |
OUT | Cannot be measured | |||
| 20 | Lateral acceleration sensor, lateral acceleration | IN | Cannot be measured | See YAW RATE SENSOR (658) | ||
| 21 | Spare | |||||
| 22 | Spare | |||||
| 23 | Spare | |||||
| 24 | Spare | |||||
| 25 | Spare | |||||
| 26 | Spare | |||||
| 27 | Wheel sensor, RL: reference ground | IN | Rotate the wheel one turn per second | 7 - 27 | >100 mV AC | See SPEED SENSOR, REAR WHEEL |
| 28 | Current (+15 circuit) | IN | 28 - B- | B+ | See POWER SUPPLY | |
| 29 | Wheel sensor, RR: signal input | IN | Rotate the wheel one turn per second | 29 - 8 | >100 mV AC | See SPEED SENSOR, REAR WHEEL |
| 30 | Brake Light Switch | IN | Brake pedal depressed | 30 - B- | B+ | See BRAKE LIGHT SWITCH |
| Brake pedal released | 30 - B- | 0 V | ||||
| 31 | ESP ON/OFF switch | IN | Switch not depressed | B+ - 31 | 0 V | See ESP ON/OFF SWITCH |
| Switch depressed | B+ - 31 | B+ | ||||
| 32 | Spare | |||||
| 33 | Spare | |||||
| 34 | Spare | |||||
| 35 | P-bus + | Bus information | 35 - 4 | approx. 2.5V | ||
| 36 | Spare | |||||
| 37 | Yaw rate sensor, reference signal | OUT | Cannot be measured | See YAW RATE SENSOR (658) | ||
| 38 | Spare | |||||
| 39 | Spare | |||||
| 40 | Signal from wheel sensor, front right, for PSG16 | Cannot be measured | ||||
| 41-45 | Spare | |||||