3G
Rear
temperature
control volume
Rear climate
control unit
Moving towards
COLD
less
continuity, short circuit
(Front climate control
unit-rear airflow mode
actuator: 3G-C)
z
Rear climate control
unit
z
Front climate control
unit: terminal voltage
(2B)
Temperature control
dial (rear side):
Moving towards
medium
temperature
Approx.
2.5
Temperature control
dial (rear side):
Moving towards
HOT
Approx.
4.2
3H
+5 V
Rear climate
control unit
Under any
condition
5.0
z
Wiring harness:
continuity (Front
climate control unit-
ground: 3H-ground)
3I
Ground
Rear climate
control unit
Under any
condition: Inspect
for continuity to
ground
1.0 or
less
z
Wiring harness:
continuity (Front
climate control unit-
rear climate control
unit: 31-E)
3J
Panel light
control input
Instrument cluster
Turn the headlight
switch to the off
position
1.0 or
less
z
Wiring harness:
continuity, short circuit
(Front climate control
unit-instrument cluster:
3J-1I)
z
TNS relay
z
Headlight switch
Turn the headlight
switch to the TNS
position
B+
2008 Mazda CX-9 Grand Touring
2008 HVAC Control System (HVAC) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:12:36 AM
Page 46
© 2005 Mitchell Repair Information Company, LLC.