Mazda CX-5 Service & Repair Manual: Cooling System Cap
Purpose, Function
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The cooling system cap maintains appropriate pressure in the engine coolant passage. In addition, cooling efficiency has been improved by increasing the engine coolant boiling point.
Construction
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The cooling system cap is installed to the upper part of the radiator.
Operation
When engine coolant temperature is high
1. When the engine coolant temperature is high, the pressure in the engine coolant passage increases and the pressure valve is pressed and opened.
2. Engine coolant flows into the coolant reserve tank when the pressure valve is open.
When engine coolant temperature is low
1. When the engine coolant temperature is low, the pressure in the engine coolant passage decreases and the vacuum valve is opened.
2. Engine coolant in the coolant reserve tank flows into the engine coolant passage when the vacuum valve is open.
Cooling System Cap Inspection
WARNING:
Never remove the cooling system cap or loosen the radiator drain plug while
the engine is running, or when the engine and radiator are hot. Scalding engine
coolant and steam may ...
Cooling System Service Warnings
WARNING:
Never remove the cooling system cap or loosen the radiator drain plug while
the engine is running, or when the engine and radiator are hot. Scalding engine
coolant and steam may ...
Other materials:
Interior Lights
Overhead Lights
Front Map Lights
When the overhead light switch is in the door or off position, press the lens
to illuminate the front map lights, and then press the lens again to turn them off.
NOTE
The front map lights will not turn off even if the lens is pressed in the
following ca ...
Hydraulic Variable Valve Timing Actuator Inspection
WARNING:
A hot engine can cause severe burns. Turn off the engine and wait until it
is cool before servicing.
CAUTION:
Do not disassemble the hydraulic variable valve timing actuator because it
is a precision unit.
1. Disconnect the negative battery cable..
2. Rem ...
Intake Air Temperature (Iat) Sensor
IAT Sensor No.1
Purpose/Function
Detects the IAT before it passes through the throttle body as basic information
for mainly determining the fuel injection amount.
Detects the IAT before it passes through the throttle body and inputs it
to the PCM as an IAT signal.
Constru ...
