A/C Cut-Off Control System; After Engine Has Been Started; Acceleration; Description - Mazda MX-5 1990 Workshop Manual

AIC CUT-OFF CONTROL SYSTEM
F
AIC
CUT-OFF CONTROL SYSTEM
DESCRIPTION
An
A/C
cut-off system is used to improve idle smoothness after just starting the engine and to improve ac-
celeration performance.
IGNITION SWITCH
CRANK ANGLE SENSOR
i;j
THROTTLE SENSOR
~ \",/
-~,)
~
lJJ
ENGINE CONTROL UNIT
DETERMINATION
OF
AIC
CUT-OFF
L
NC~
MAGNETIC
CLUTCH
05UOFX-194
After Engine Has Been Started .
The
Ale
is cut-off for 2 sec. just after the engine is started.
Acceleration
The
A/C is cut-off upon wide-open-throttle acceleration for approx. 16 sec ..
ffi-TL
-
~pow
~
05UOFX-195
System Operation
1. Start the engine.
2. Turn the blower switch and A/C switch ON.
3. Disconnect the throttle sensor connector.
4. Connect the throttle sensor connector terminals TL and POW
with a jumper wire and verify that the condenser fan stops
for approx. 16 sec ..
5. If not correct, check engine control unit terminals 1
Q
and
2L voltages. (Refer to page F-129.)
F-123