Air Conditioning Switch And A/C Compressor Clutch Relay (Dohc) - Mitsubishi 1989-1993 GALANT Service Manual

FUEL SYSTEM <DOHC> -
AIR CONDITIONING SWITCH AND A/C COMPRESSOR CLUTCH RELAY
,
OPERATION
The air conditioning switch applies battery vol-
l
tage to the engine control module when the
conditioning is switched ON.
T R O U B L E S H O O T I N G H I N T S
If the air conditioning compressor's magnetic clutch
is not activated when the air conditioning switch
is switched ON during idling, it is probable that the
On-Vehicle Inspection of MFI Components
Engine control module ,(65 1\7
Engine control module connector
.
air
cause is a malfunction of the air conditioning control
system.
Revision
TSB
Sub fusible link
2 Dual pressure
switch
Air conditioning
2
When the air conditioning signals are input, the
engine control module activates the idle air con-
transistor. As a result, current flows to the A/C
compressor clutch relay coil and the relay
switch is switched ON, the air conditioning
compressor's magnetic clutch is activated.