Fault-finding table

Make

Alfa Romeo

Model

145/146 Electrical System Diagnosis Manual, Volume 3

Year

1994–2001

Section

Heating and ventilation › Fault-finding table

145 electrical system diagnosisFault-finding table

FAULT-FINDING TABLE

NOTE: air distribution to the passenger compartment and air heating/cooling are controlled mechanically. Therefore for failures such as the lack of heating/ventilation, incorrect air distribution, etc...., see Group 50 "HEATING AND VENTILATION"

F1	Component to be checked
Fault	F13	G255 (B)	Q1	I78 (B)	Q5	Q4	F8
Fan engagement	●	●	●	●		●
Fan engagement at different speeds					●	●
Control panel lighting			●				●

(B) only for fusebox "B"

CHECKING COMPONENTS

Heater fan Q1

F2	SPECIFICATIONS
Nominal voltage	12V
Maximum current	16.5 A
Speed at 12V/25°C in free air with impeller and support	3230 ÷ 3570 rpm
Motor direction of rotation	leftwards impeller side

01 Diagnostics