Checking Components

Make

Alfa Romeo

Model

145/146 Electrical System Diagnosis Manual, Volume 3

Year

1994–2001

Section

Air Conditioner › Checking Components

145 electrical system diagnosisChecking Components

Checking Components

Heating and ventilation fan Q1

Specifications
Nominal voltage	12V
Speed at 12V/25°C in free air with impeller and support	3700 ± 100 rpm
Direction of motor rotation	leftwards impeller side

Heating and ventilation fan control Q4

Check the contacts corresponding to the different positions of the knob.

Heating & ventilation fan speed adjustment coil Q5

Specifications
Section crossed	Total resistance	fan speed
4-1	2.9 Ω	1st
3-1	0.8 Ω	2nd
2-1	0.3 Ω	3rd
none	-	4th
Thermal contact cut-in temperature	90 ± 5°C

01 Diagnostics