z
Front climate control
unit: terminal voltage
(1W, 1X)
1V
Rear blower
fan speed
control
Rear power MOS
FET
Rear airflow
volume
control dial
Off
1.0 or
less
z
Front climate control
unit: terminal voltage
(1T)
1st. Approx.
2.1
2nd.
Approx.
2.2
3rd.
Approx.
2.2
4th. Approx.
2.3
5th.
Approx.
2.4
1W
IG2
A/C 7.5 A fuse
Ignition switch is at
ON position
B+
z
Wiring harness:
continuity, short circuit
(Front climate control
unit-fuse: 1W-A/C 7.5
A)
z
A/C 7.5 A fuse
Ignition switch is at
LOCK position
1.0 or
less
1X
Ground
Body ground
Under any
condition: Inspect
for continuity to
ground
1.0 or
less
z
Wiring harness:
continuity (Front
climate control unit-
ground: 1X-ground)
2A
ECT sensor
signal
Instrument cluster
Because this terminal is for
communication, good/no
good judgment by terminal
voltage is not possible.
-
2B
+5V
z
Driver-side
front air mix
actuator
z
Passenger-
side front air
mix actuator
z
Front
airflow
mode
actuator
z
Solar
radiation
Under any
condition
5.0
z
Wiring harness: short
circuit (Front climate
control unit-driver-side
front air mix actuator,
passenger-side front air
mix actuator, front
airflow mode actuator,
solar radiation sensor,
rear air mix actuator,
rear airflow mode
actuator: 2B-A, A, A,
C, A, A)
z
Driver-side front air
mix actuator
z
Passenger-side front
2008 Mazda CX-9 Grand Touring
2008 HVAC Control System (HVAC) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:12:36 AM
Page 40
© 2005 Mitchell Repair Information Company, LLC.
