AD83.40-S-6001-11B | TM test of electrical system AC control refrigerant pressure sensor | Models 638.094/194/294 with air conditioning system |
| Scope of test | Tester/test connection | Operation/ Requirement | Specified value | Possible cause/ Remedy | ||
1.0 | Pressure sensor, refrigerant, air conditioning regulation (B61) Ground connection |
| B61.1 |
1 | Plug removed from pressure sensor, refrigerant, air conditioning regulation (B61) |
< 5 Ω | Wiring J215 (only M111) X130, pin 6 (only M111) X61, pin 20 (M611 or M104.900) 1.1 |
1.1 | Voltage supply (5 V) |
| B61.1 |
3 | Plug removed from pressure sensor, refrigerant, air conditioning regulation (B61) Ignition: ON |
approx. 5 V | Wiring X130, pin 1 (only M111) X61, pin 22 Control unit A20, pin .2/6 1.2 |
1.2 | Signal cable fault -//- | A20.2 19 | | B61.1 2 | Plug connector A20.2 pulled Plug removed from pressure sensor, refrigerant, air conditioning regulation (B61) |
< 5 Ω | Wiring X130, pin 2 (only M111) X61, pin 21 1.3 |
1.3 | Signal cable, short-circuit to ground - |
| B61.1 |
2 | Plug connector A20.2 pulled Plug removed from pressure sensor, refrigerant, air conditioning regulation (B61) |
>20 kΩ | Wiring 1.4 |
1.4 | Signal cable, short-circuit to positive + |
| B61.1 |
3 | Plug connector A20.2 pulled Plug removed from pressure sensor, refrigerant, air conditioning regulation (B61) Ignition: ON |
< 1 V | Wiring Value in order Pressure sensor, refrigerant, air conditioning regulation (B61) Control and operating unit, air conditioning (A20) |