Mazda CX-9 Grand Touring 2009 Manual page 1727

Courtesy of MAZDA MOTORS CORP.
REAR CLIMATE CONTROL UNIT INSPECTION
1. Connect the rear climate control unit connector.
2. Turn the ignition switch to the ON position.
3. Connect the negative (-) lead of the tester to body ground.
4. By inserting the positive (+) lead of the tester into each rear climate control unit terminal, measure the
voltage according to the terminal voltage table.
If there is any malfunction, inspect the parts under "Inspection item (s)".
If the parts under "Inspection item (s)" are found to be normal, replace the rear climate
control unit.
TERMINAL VOLTAGE TABLE (REFERENCE)
Fig. 60: Identifying Rear Climate Control Unit Terminals
Courtesy of MAZDA MOTORS CORP.
TERMINAL VOLTAGE REFERENCE
Terminal Signal name Connected to
Rear fan
A
control volume
2008 Mazda CX-9 Grand Touring
2008 HVAC Control System (HVAC) - Mazda CX-9
Measurement condition
Airflow
Front climate
volume
control unit
control dial
Voltage (V)
Off 1.0 or less
1st. Approx. 1.3
Inspection item
(s)
Front
climate
control
unit:
terminal
voltage
(1T)
Wiring
harness:
continuity,
short
circuit
(Front
climate
control