ETP - Electrical Test Program

Electrical Test Program

Conection Diagram, Socket Box:

002 25-pole test cable 124 589 33 63 00
003 Multimeter
004 35-pole socket box 124 589 00 21 00
005 Test cable 124 589 34 63 00
N39 EDS control unit

Equipment/Test Symbols:

1 - 2:

2 (cont) - 3:

3 (cont) - 5:

4) Briefly apply full throttle. Vacuum and voltage fall. The test values are approximate.

5 (cont) - 6:

7:

1) Voltage increases with increasing rpm.
5) Measured at 20 °C ambient temperature (for every 10 °C difference in ambient temperature, the resistance changes by 4 %).
6) Voltage decreases with increasing rpm.

8 - 9:

3) See table for coolant and intake air temperature sensors.

9 (cont) - 11:

1) Displayed only if there is a short circuit
2) Reference value only. Voltage decreases with increasing engine speed.

11 (cont) - 14:

1) Raise engine speed slowly to 2000 rpm, repeat test if necessary

14 (cont) - 15:

Coolant & Air Temperature Sensor Chart: