Cooling Fan Control System Inspection

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 [PCM (VIN M (With Cylinder Deactivation))] .)
Verify that DTC P0480-00: or P0481-00: is not shown and the cooling fan operates during the KOER self test.
- If the DTC P0480-00: or P0481-00: is displayed, perform the DTC inspection. (See DTC P0480-00: [PCM (VIN M (With Cylinder Deactivation))] .) (See DTC P0481-00: [PCM (VIN M (With Cylinder Deactivation))] .)
- 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
  - If there is no malfunction:
    - Replace the cooling fan component. (See COOLING FAN MOTOR REMOVAL/INSTALLATION [VIN M (With Cylinder Deactivation)] .)