COLD
1O
Motor
operation
Air intake actuator
REC switch:
Switched to
RECIRCULATE
1.0 or
less
z
Wiring harness:
continuity, short circuit
(Front climate control
unit-air intake actuator:
1M-A, 1O-C)
z
Air intake actuator
REC switch:
Switched to FRESH B+
1P
Front blower
motor
feedback
Front power MOS
FET
Airflow
volume
control dial
Off
Approx.
7.3
1. Wiring harness:
continuity, short circuit
(Front climate control
unit-front power MOS
FET: 1P C, 1R A)
2. Wiring harness:
continuity (Front
power MOS FET-body
ground: D-ground)
3. Front power MOS FET
4. Front blower motor
5. Front blower relay
6. HEATER 50 A fuse
1st.
Approx.
5.4
2nd. Approx.
4.6
3rd.
Approx.
3.7
4th.
Approx.
2.9
5th. Approx.
2.0
6th.
Approx.
1.1
7th,
1.0 or
less
1Q
Rear window
defroster
switch
Rear window
defroster relay
Rear window
defroster switch on
1.0 or
less
z
Wiring harness:
continuity, short circuit
(Front climate control
unit-rear window
defroster relay (main
fuse block): 1Q-A)
z
Rear window defroster
relay
Rear window
defroster switch off B+
z
Front climate control
unit: terminal voltage
(1W, 1X)
1R
Front blower
fan speed
control
Front power MOS
FET
Airflow
volume
control dial
Off
1.0 or
less
z
Front climate control
unit: terminal voltage
(1P)
1st.
Approx.
2.1
2nd.
Approx.
2.2
3rd.
Approx.
2.3
4th. Approx.
2008 Mazda CX-9 Grand Touring
2008 HVAC Control System (HVAC) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:12:36 AM
Page 38
© 2005 Mitchell Repair Information Company, LLC.