Mazda 1996 626 Service Manual page 252

^ A C T U A TOR CONNECTOR
M
HEATER UNIT
G — 38
HEATER AND REFRIGERANT SYSTEM
Inspection
Airflow mode actuator
1. Disconnect the airflow mode actuator connector.
2. Connect battery positive voltage to terminals I and J of
the airflow mode actuator and check the actuator oper­
ation.
3. If not as specified, replace the airflow mode actuator.
4. If correct, check for continuity between the terminals of
the actuator for each mode.
AIRFLOW MODE
ACTUATOR
VENT
BI-LEVEL
HEAT
HEAT/DEF
5. If not as specified, replace the airflow mode actuator.
Air mix actuator
1. Disconnect the air mix actuator connector.
2. Connect battery positive voltage to terminals G and H
of the air mix actuator and check the actuator operation.
3. If not as specified, replace the air mix actuator.
4. If correct, compare the measurement resistance to the
characteristics shown in the figure.
5. If not as specified, replace the air mix actuator.
Connection
B+ GND
I
J
I
J
Airflow mode
_ C >
o-
Connection
B+ GND
H
G
H G
Connection
Operating direction
B+ GND
G H Clockwise
H
G Counterclockwise
B+: Battery positive voltage
Operation
VENT to D E F
DEF to VENT
0 - 0 : Continuity
Terminal
-O-
- O
-o- -o
O
o- -o
<> -o- -o
-o- -o -o
o
B+: Battery positive voltage
Operation
Hot to Cold
Cold to Hot
B+: Battery positive voltage
Resistance
A— B
B— D
- O