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:
Low And Reverse Brake [Fw6 A EL, Fw6 Ax EL]
Purpose/Function
The low and reverse brake stops the rotation of the front internal gear and
rear planetary carrier while in 1GR and in reverse, locking them to the transaxle
case.
Construction
The low and reverse brake consist of the following parts shown in the figure.
...
Air Fuel Ratio (A/F) Sensor
Purpose/Function
Detects the oxygen concentration (all-range air/fuel ratio) in the exhaust
gas as basic information for mainly determining the fuel injection amount.
Detects the oxygen concentration (all-range air/fuel ratio) in the exhaust
gas and inputs it to the PCM as an ox ...
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