Connector a

Make

Alfa Romeo

Model

145/146 Electrical System Diagnosis Manual, Volume 3

Year

1994–2001

Section

Automatic Air Conditioner › Connector a

145 electrical system diagnosisConnector a

PIN OUT Control unit

CONNECTOR A

PIN	FUNCTION
1	"Fast defrosting" function
2	Compressor engagement
3	Earth
4	Fan control potentiometer
5	Required temperature adjustment potentiometer
6	Treated air temp. sensor
7	Recirculation engagement
8	Diagnosis line K
9	Diagnosis line L
10	Supply for potentiometers - 5V
11	Direct supply from battery
12	Earth for sensors

CONNECTOR B

PIN	FUNCTION
13	Earth
14	Passenger compartment temperature sensor
15	Outside temperature sensor
16	N.C.
17	Mixing actuator feed-back
18	Antifrost sensor
19	N.C.
20	Fan control
21	Earth for fan
22	Mixer control - 5V
23	Mixer control - 5V
24	Compressor control
25	Key supply
26	Recirculation engagement control- 5V
27	Recirculation shut off control - 5V
28	N.C.

01 Diagnostics