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:
Shift Solenoid No.1 [Fw6 A EL, Fw6 Ax EL]
Purpose/Function
Shift solenoid No.1 adjusts the hydraulic pressure in the low clutch circuit
based on the current demand from the TCM according to the vehicle conditions.
Construction
Shift solenoid No.1 is installed to the solenoid control valve body.
Shift solenoid ...
Engine Coolant Temperature (ECT) Sensor Inspection
Resistance Inspection
WARNING:
When the engine is hot, it can badly burn. Turn off the engine and wait until
it is cool before removing the ECT sensor.
ECT Sensor No.1
1. Remove the ECT sensor No.1..
2. Place the ECT sensor No.1 in water with a thermometer, and heat the water
...
Electric Variable Valve Timing Motor/Driver Removal/Installation
WARNING:
A hot engine can cause severe burns. Turn off the engine and wait until it
is cool before servicing.
CAUTION:
Applying excessive force (force of 100 N {10.2 kgf, 22.5 lbf} or more) to
the electric variable valve timing motor/driver may cause a malfunction. When
...