62B - 59
CLIMATE CONTROL
Fault finding – Help62B
V3 MR-372-J84-62B000$120.mif
Vdiag No.: 44
Electrical specifications of the temperature sensors according to temperature
(tolerance: ± 5%).
Interior temperature sensor
Temperature Sensor resistance Temperature Sensor resistance
- 30 ˚C 175200 Ω25
°° ° °
C10000 ΩΩ Ω Ω
- 25 ˚C 129300 Ω26 ˚C 9574 Ω
- 20 ˚C 96360 Ω27 ˚C 9168 Ω
- 15 ˚C 72500 Ω28 ˚C 8783 Ω
- 10 ˚C 55050 Ω29 ˚C 8416 Ω
- 5 ˚C 42160 Ω30 ˚C 8059 Ω
0 ˚C 32560 Ω35 ˚C 6535 Ω
5 ˚C 25340 Ω40 ˚C 5330 Ω
10 ˚C 19870 Ω45 ˚C 4372 Ω
15 ˚C 15700 Ω50 ˚C 3606 Ω
16 ˚C 14991 Ω55 ˚C 2989 Ω
17 ˚C 14318 Ω60 ˚C 2490 Ω
18 ˚C 13679 Ω
19 ˚C 13074 Ω
20 ˚C 12490 Ω
21 ˚C 11942 Ω
22 ˚C 11422 Ω
23 ˚C 10928 Ω
24 ˚C 10458 Ω
ACREG X84 1.1
Edition 2
62B - 60
CLIMATE CONTROL
Fault finding – Help62B
V3 MR-372-J84-62B000$120.mif
Vdiag No.: 44
Operation of the engine cooling fan assembly according to the refrigerant fluid pressure
and vehicle speed.
GMV = 1 Engine cooling fan low speed
GMV = 2 Engine cooling fan high speed
GMV = 0 Engine cooling fan stopped
The engine cooling fan assembly is not used for vehicle speeds over 42 mph (70 km/h), except in rare cases where
the refrigerant fluid pressure is above 23 bar in spite of the speed (e.g.: driving behind a lorry).
When stationary, the engine cooling fan is used systematically at low speed if the refrigerant fluid relative pressure is
below 19 bar, at high speed in the opposite case.
While driving, the engine cooling fan may either not operate, or operate at low or high speed depending on the
refrigerant fluid pressure at the condenser outlet and the vehicle speed.Pressure (relative bar)
AIR CONDITIONING DEACTIVATION
GMV = 2
GMV = 2 GMV = 1 GMV = 0
GMV = 1 GMV = 0
GMV = 1 GMV = 0
AIR CONDITIONING DEACTIVATION
12 (20) 18 (30) 27 (45) 42 (70) Vehicle speed in
mph (km/h)
ACREG X84 1.1
Edition 2
