Mazda MX-5 1990 Workshop Manual page 768

~
g
e
b
05UOUX-042
05UOUX-043
AIRFLOW MODE WIRE
VENT
9MUOUX-232
FRESH
=====t:p=M
05UOUX-044
HEATER
Inspection
Blower and Ale switch
1. Check continuity between terminals of the switch.
Position
a
OFF
First 0
Blower
Second
switch
Third
Fourth
Ale
OFF
0
switch
ON
0
~
: Indicates continuity
~
: Indicates diode
Terminal
b
c d
e
0
0
O.
l:i
1:'1
,:...
r"I'
2. If not as specified, replace the switch.
Adjustment
Temperature blend wire
f g
{)
-0-
Q-
-0-
-0
u
h
f--o
f-O
f--o
1. Set the temperature blend lever to maximum hot position.
2. Connect and clamp the wire with the shutter lever on the
heater unit all the way to the right.
Caution
• After installation, move the temperature blend le-
ver to be sure the wire is securely attached and that
it moves the full stroke from HOT to COLD.
Airflow mode wire
1. Set the airflow mode control lever to VENT position.
2. Connect and clamp the wire with the shutter lever on the
heater unit at its closest point.
Caution
• After installation, move the airflow mode
control Ie-
ver to be sure the wire is securely attached and that
it moves the full stroke from DEF to VENT.
Rec-Fresh wire
1. Set the Rec-Fresh lever to FRESH position.
2. Connect and clamp the wire with the shutter lever on the
blower unit at its closest point.
Caution
• After installation, move the Rec-Fresh lever to be
sure the wire is securely attached and that it moves
the full stroke from REC to FRESH.
U-2S