Cooling Fan Control System Inspection
WARNING: This page is about a different car, the 2016 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.
- Connect the M-MDS to the DLC-2.
- Start the engine and warm it up to normal operating temperature.
- Perform the KOER self test. (See KOEO/KOER SELF TEST .)
- Verify that DTC P0480:00 or P0482:00 is not shown and the cooling fan operates during the KOER self test.
- If the DTC P0480:00 or P0482:00 is displayed, perform the DTC inspection. (See DTC P0480:00 [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .) (See DTC P0482:00 [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
- If the cooling fans do not operate, proceed to the following:
- Inspect the following parts in the indicated order in accordance with fan operation conditions.
- Open circuit between cooling fan relay and battery positive terminal
- Open circuit between cooling fan relay and ground
- Poor connection of the cooling fan relay
- Inspect the following parts in the indicated order in accordance with fan operation conditions.
- If there is no malfunction:
- Replace the cooling fan component. (See COOLING FAN MOTOR REMOVAL/INSTALLATION .)