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.
z
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
Measurement condition
Voltage (V)
Inspection item
(s)
A
Rear fan
control volume
Front climate
control unit
Airflow
volume
control dial
Off
1.0 or less
z
Front
climate
control
unit:
terminal
voltage
(1T)
z
Wiring
harness:
continuity,
short
circuit
(Front
climate
control
1st.
Approx. 1.3
2008 Mazda CX-9 Grand Touring
2008 HVAC Control System (HVAC) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:12:36 AM
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