| All values measured to ground unless otherwise noted | |||
| N47-2 | |||
| 1.1 | LF VSS output, generated by L6/1, processed in ECM and sent to other ECMs | Ignition on, lift front of vehicle. Turn left front wheel > 1 rev/sec by hand > 3 VAC or with vehicle moving |
20 mph / 200 Hz 35 mph / 330 Hz square wave |
| 1.2 | Pin not used | ||
| 1.3 | Rear axle VSS output to engine control modul and CC/ISC control modul | Ignition on, lift rear of vehicle. Turn any rear wheel > 1 rev/sec by hand > 3 VAC or with vehicle moving |
|
| 1.4 | Stop lamp switch (normally closed) input | 12 VDC with brakes not applied, 0 VDC with brakes applied. | |
| 1.5 | pin not used | ||
| 1.6 | Parking brake signal input | Ignition on < 1 VDC with brake applied | |
| 1.7 | MIL data output to ETS relating indicator lamps in IC |
Ignition on 3 - 4 VDC indicator lamps A1e6,e7,e35, 36 will be lit |
valid for vehicles without CAN to IC |
| 1.8 | Pin not used | ||
| 1.9 | "Diagnostic port" for DTC readout and diagnostic purpose | Ignition on 12 VDC | To be tested with HHT refer to D.M. |
| 1.10 | Circuit 87 fused power input from BM | Ignition on 12 VDC | Feed from K1 |
| 1.11 | Stop lamp switch (normally open) input. Same signal as to brake lights |
12 VDC with brakes applied, 0 VDC with brakes not applied | |
| 1.12 1.13 |
Left rear axle VSS sensor, + input. Left rear axle VSS sensor, - input. |
ECM disconnected 0.6-1.8 kOhms across pins 1.12 and 1.13 Sine wave. Frequency varies with wheel speed. |
Note |
| 1.14 1.15 |
Right rear axle VSS sensor, + input Right rear axle VSS sensor, - input |
ECM disconnected 0.6-1.8 kOhms across pins 1.14 and 1.15 Sine wave. Frequency varies with wheel speed |
Note |
| 1.16-25 | pins not used | ||
| 1.26 |
ETS signal output to engine control modul and CC/ISC control modul | Ignition on, acceleration pedal position: CTP < 4.8 VDC WOT > 5.5 VDC |
|
| 1.27 | pin not used | ||
| 1.28 | Circuit 61 (engine running) signal input processed in IC from circuit D+ |
Ignition on < 1 VDC engine at idle 12 VDC |
D+ signal from generator G2 |
| 1.29,30 | Pins not used | ||
| 2.1-16 | pins not used | ||
| 2.17 2.18 |
Right front axle VSS sensor, + input Right front axle VSS sensor, - input |
ECM disconnected 0.8-2.3 kOhms across pins 2.17 and 2.18 Sine wave. Frequency varies with wheel speed |
Note |
| 2.19 2.20 |
Right front brake pad wear recognition, lights indicator lamp when pads worn down |
ECM disconected: Open circuit in normal condition. Short circuit with brake pads worn down. |
|
| 2.21 | see ETS Teves | ||
| 2.22 | pin not used | ||
| 2.23 | Main ground to W16/4 | Approx. 0 Ohms to ground or measure to circuit 30 12 VDC |
same as pin 2.47 |
| 2.24 | pin not used | ||
| 2.25 | Return pump relay activated monitoring signal input and pump voltage supply | 12 VDC to pin 2.26 with relay activated | |
| 2.26 2.27 |
Return pump relay common output activation signal output |
12 VDC to pin 2.26 with relay activated |
coil resistance approx. 40-80 Ohms |
| ETS Bosch | |||
| 2.28 | Switchover valve signal output, switched ground activates solenoid valve A7/3y5 |
12 VDC with valve energized 0 VDC with valve not energized ECM disconnected 5.4-12.6 Ohms to ground |
|
| 2.29 | Inlet valve signal output, switched ground activates solenoid valve A7/3y15 | 12 VDC with valve energized 0 VDC with valve not energized ECM disconnected 5.4-12.6 Ohms to ground |
|
| 2.30 | Right rear axle hold valve signal, switched ground activates solenoid valve A7/3y12 | 12 VDC with valve energized 0 VDC with valve not energized ECM disconnected 5.4-12.6 Ohms to ground |
|
| 2.31 | Right rear axle release valve signal, switched ground activates solenoid valve A7/3y13 | 12 VDC with valve energized 0 VDC with valve not energized ECM disconnected 2.8-6.6 Ohms to ground |
|
| 2.32-34 | pins not used | ||
| 2.35 | Left rear axle hold valve signal, switched ground activates solenoid valve A7/3y10 | 12 VDC with valve energized 0 VDC with valve not energized ECM disconnected 5.4-12.6 Ohms to ground |
|
| 2.36 | Left rear axle release valve signal, switched ground activates solenoid valve A7/3y11 | 12 VDC with valve energized 0 VDC with valve not energized ECM disconnected 2.8-6.6 Ohms to ground |
|
| 2.37 | Right front axle release valve signal, switched ground activates solenoid valve A7/3y9 | 12 VDC with valve energized 0 VDC with valve not energized ECM disconnected 2.8-6.6 Ohms to ground |
|
| 2.38 | Left front axle release valve signal, switched ground activates solenoid valve A7/3y7 | 12 VDC with valve energized 0 VDC with valve not energized ECM disconnected 2.8-6.6 Ohms to ground |
|
| 2.39 | Left front axle hold valve signal, switched ground activates solenoid valve A7/3y6 | 12 VDC with valve energized 0 VDC with valve not energized ECM disconnected 5.4-12.6 Ohms to ground |
|
| 2.40 | Right front axle hold valve signal, switched ground activates solenoid valve A7/3y8 | 12 VDC with valve energized 0 VDC with valve not energized ECM disconnected 5.4-12.6 Ohms to ground |
|
| 2.46 | Hydraulic unit solenoid valve power input | Ignition on 12 VDC | |
| ETS Teves | |||
| 2.21 | Hydraulic unit solenoid valve power input | Ignition on 12 VDC | see Pin 2.37 |
| 2.28 | Right rear axle hold valve signal, switched ground activates solenoid valve A7/3y12 | 12 VDC with valve energized 0 VDC with valve not energized ECM disconnected 5.4-12.6 Ohms to ground |
|
| 2.30 | Right rear axle release valve signal, switched ground activates solenoid valve A7/3y13 | 12 VDC with valve energized 0 VDC with valve not energized ECM disconnected 2.8-6.6 Ohms to ground |
|
| 2.31 | Switchover valve signal output, switched ground activates solenoid valve A7/3y5 |
12 VDC with valve energized 0 VDC with valve not energized ECM disconnected 5.4-12.6 Ohms to ground |
|
| 2.32-34 | pins not used | ||
| 2.35 | Right front axle hold valve signal, switched ground activates solenoid valve A7/3y8 | 12 VDC with valve energized 0 VDC with valve not energized ECM disconnected 5.4-12.6 Ohms to ground |
|
| 2.36 | Left front axle hold valve signal, switched ground activates solenoid valve A7/3y6 | 12 VDC with valve energized 0 VDC with valve not energized ECM disconnected 5.4-12.6 Ohms to ground |
|
| 2.37 | Hydraulic unit solenoid valve power input | Ignition on 12 VDC | see Pin 2.21 |
| 2.38 | Left rear axle hold valve signal, switched ground activates solenoid valve A7/3y10 | 12 VDC with valve energized 0 VDC with valve not energized ECM disconnected 5.4-12.6 Ohms to ground |
|
| 2.39 | Left rear axle release valve signal, switched ground activates solenoid valve A7/3y11 | 12 VDC with valve energized 0 VDC with valve not energized ECM disconnected 2.8-6.6 Ohms to ground |
|
| 2.40 | Right front axle release valve signal, switched ground activates solenoid valve A7/3y9 | 12 VDC with valve energized 0 VDC with valve not energized ECM disconnected 2.8-6.6 Ohms to ground |
|
| 2.46 | Left front axle release valve signal, switched ground activates solenoid valve A7/3y7 | 12 VDC with valve energized 0 VDC with valve not energized ECM disconnected 2.8-6.6 Ohms to ground |
|
| 2.41 2.42 |
Left front brake pad wear recognition, lights indicator lamp when pads worn down |
ECM disconected: Open circuit in normal condition. Short circuit with brake pads worn down. |
|
| 2.43 2.44 |
Left front axle VSS sensor, - input. Left front axle VSS sensor, + input. |
ECM disconnected 0.8-2.3 kOhms across pins 2.43 and 2.44 Sine wave. Frequency varies with wheel speed. |
Note |
| 2.45 | pin not used | ||
| 2.47 | Main ground to W16/4 | Approx. 0 Ohms to ground or measure to circuit 30 12 VDC |
same as pin 2.23 |
| 2.48 | Circuit 30 main power input | 12 VDC at all times | |
| Note | To test, spin wheel at 1 rev/sec, measure at least 120 mVAC between both wires of sensor. If voltage is OK, measure the sensor's resistance while pulling, twisting and bending the sensor wires, looking for intermittent opens. Finally, check the sensor tip and rotor teeth for dirt or breakage. An oscilloscope can also be used to check the waveform - chipped or dirty teeth show up as missing or malformed waves. | ||