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Mazda CX-5 Service & Repair Manual: Electrical Fan Control

Mazda CX-5 Service & Repair Manual / Engine / Cooling / Electrical Fan Control

Outline

Block Diagram


Operation

Operation Pattern

Demand airflow volume

Cooling fan relay

Cooling fan motor

No.1

No.2/No.3

No.1

No.2

No airflow

OFF

OFF

Stop

Stop

Small

ON

OFF

Low-speed

Low-speed

Large

ON

ON

High-speed

High-speed



Engine coolant temperature condition


A/C operation condition


Operation condition

Demand airflow volume

  • When all of the following conditions are met.

    • Refrigerant pressure: 1.3 MPa {13 kgf/cm2, 189 psi} or less, vehicle speed: 45 km/h {28 mph} or more

    • Refrigerant pressure: 2.2 MPa {22 kgf/cm2, 319 psi} or less, vehicle speed: 85 km/h {53 mph} or more

No airflow

  • When all of the following conditions are met.

    • Refrigerant pressure: 1.3 MPa {13 kgf/cm2, 189 psi} or less, vehicle speed: 45 km/h {28 mph} or less

    • Refrigerant pressure: 1.3—1.5 MPa {14—15 kgf/cm2, 189—217 psi}, vehicle speed: 85 km/h {53 mph} or less

    • Refrigerant pressure: 1.5—2.2 MPa {16—22 kgf/cm2, 218—319 psi}, vehicle speed: 65—85 km/h {41—52 mph}

Small

  • When all of the following conditions are met.

    • Refrigerant pressure: 1.5—2.2 MPa {16—22 kgf/cm2, 218—319 psi}, vehicle speed: 65 km/h {40 mph} or less

    • Refrigerant pressure: 2.2 MPa {22 kgf/cm2, 319 psi} or more

Large


After Cooling Control

Cooling System
Outline Passing water resistance is reduced by improvement of the engine coolant passage shape. Pump efficiency is improved by changing the water pump impeller to the closed impel ...

Engine Coolant Leakage 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 ...

Other materials:

Rear Differential Assembly
WARNING: The engine stand is equipped with a self-lock mechanism, however, if the rear differential is in a tilted condition, the self-lock mechanism could become inoperative. If the rear differential unexpectedly rotates it could cause injury, therefore do not maintain the rear dif ...

Magnetic Clutch Disassembly/Assembly [Manual Air Conditioner]
1. Disassemble in the order indicated in the table. 1 Bolt (See Bolt Removal/Installation Note.) 2 Pressure plate 3 Shim (See Shim Installation Note.) 4 Snap ring (See Snap Ring ...

Vanity Mirror Illumination Bulb Removal/Installation
1. Disconnect the negative battery cable.. 2. Insert a tape-wrapped flathead screwdriver into the service hole in the position shown in the figure. 3. Move a flathead screwdriver in the direction of the arrow (1) shown in the figure and detach the lens tab and sunvisor. 4. Detach a ...

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