1. Shine an incandescent light (60 W)
on the solar radiation sensor from a distance of approximately 100 mm {3.94 in}.
2. Connect positive (+) lead to terminal A and negative (−) lead to terminal B of the solar radiation sensor.

, replace the solar radiation sensor.
Solar radiation sensor removal/installation
Ambient temperature sensor removal/installationMazda 6 Service Manual: Cooling system service warnings
COOLING SYSTEM SERVICE WARNINGS
Warning
Never remove the radiator cap or loosen the radiator drain plug
while the engine is running, or when the engine and radiator are hot.
Scalding coolant and steam may shoot out and cause serious injury. It may
also damage the engine and cooling sys ...
Mazda 6 Service Manual: Power brake unit inspection
Warning
The following inspection methods are the simple inspection methods
to judge the function of power brake.
If there is malfunction in power brake unit, replace the power
brake unit as a component.
Power Brake Unit Function Check (Simple Method)
Step 1
1. With the engine stoppe ...