Mazda RX-8 Workshop Manual page 2687

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2011 - RX-8 - HVAC
CLIMATE CONTROL UNIT INSPECTION [MANUAL AIR CONDITIONER]
1. Turn the ignition switch to the ON position.
2. Connect the negative (-) lead of the tester to body ground.
3. By inserting the positive (+) lead of the tester into each 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)".
Terminal voltage table (reference)
Terminal Signal
Connected to
name
A B+ ROOM 15 A fuse
B ACC
If the parts under "Inspection item(s)" are found to be normal, replace the climate control
unit.
Under any condition
Ignition switch ACC
ACC
7.5 A
fuse
ACC
relay
Ignition switch LOCK
Ignition
switch
When light switch TNS
Measurement condition
Voltage
Inspection item(s)
(V)
ROOM
15 A
fuse
B+
Related
wiring
harness
B+ ACC 7.5
A fuse
ACC
relay
Ignition
1.0 or
switch
less
Related
wiring
harness
B+ light