1. Measure the temperature around the passenger compartment temperature sensor and measure the resistance between passenger compartment temperature sensor terminals A and B.
If the characteristics of the passenger compartment temperature sensor are not as shown in the graph, replace the passenger compartment temperature sensor.

Differential Oil Temperature Sensor Removal/Installation
Passenger Compartment Temperature Sensor Removal/Installation [Full Auto Air
Conditioner]Break-In Period
No special break-in is necessary, but a few precautions in the first 1,000 km
(600 miles) may add to the performance, economy, and life of your Mazda.
• Do not race the engine.
• Do not maintain one constant speed,
either slow or fast, for a long period of time.
• Do not drive constantl ...
Clutch Fluid Inspection [C66 M R]
NOTE:
A common reserve tank is used for the clutch system and brake system.
1. Verify that the clutch fluid is between the MIN mark and the MAX mark.
Verify that there is no clutch fluid leakage then add clutch fluid to the
level between the MIN mark and the MAX mark..
...
Filament Inspection
1. Switch the ignition ON (engine off).
2. Turn the rear window defroster switch on.
CAUTION:
Directly touching the rear window defroster filament with the lead of the
tester could damage it. Wrap aluminum foil around the end of the lead and inspect
the filament by touching it ...