Mazda CX-5 Service & Repair Manual: Oil Cooler [Fw6 A EL, Fw6 Ax EL]
Purpose/Function
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The oil cooler constantly maintains maximum ATF performance in the transaxle by maintaining an optimum ATF temperature which has the effect of achieving reduced fuel consumption.
Construction/Operation
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The oil cooler performs the following operations according to the ATF temperature condition:
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Heating function: Warms the ATF using the radiator coolant to promote an earlier increase in the ATF temperature when its temperature is low. As a result of the earlier temperature increase, the ATF viscosity decreases which reduces drag in the transaxle.
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Cooling function: Cools the ATF using the radiator coolant to maintain optimum conditions and prevent ATF expansion and deterioration.
Oil Cooler Removal/Installation
WARNING:
Hot engines and engine oil can cause severe burns. Turn off the engine and
wait until it and the engine oil have cooled.
A vehicle that is lifted but not securely supported ...
Oil Cooler
Purpose, Function
The oil cooler routes engine oil and engine coolant through the interior
and disperses the engine oil heat using the engine coolant. As a result, the
oil temperature is ...
Other materials:
Refrigerant Line Removal/Installation
1. Disconnect the negative battery cable..
2. Discharge the refrigerant..
3. Disconnect the engine ground.
4. Disconnect the refrigerant pressure sensor connector.
5. Remove in the order indicated in the table. Do not allow compressor oil to
spill.
CAUTION:
If moisture or for ...
Crankshaft Position (CKP) Sensor Inspection
Visual Inspection
CAUTION:
When foreign material such as an iron chip is on the CKP sensor, it can cause
abnormal output from the sensor because of flux turbulence and adversely affect
the engine control. Be sure there is no foreign material on the CKP sensor when
replacing.
...
Air Fuel Ratio (A/F) Sensor Heater Control
Outline
Based on the control of the A/F sensor heater, a stabilized oxygen concentration
is detected even at low exhaust temperatures, and feedback control of fuel injection
even at cold engine start is made possible for improved cold temperature exhaust
emission performance.
...
