Cooling Fan Control System Inspection: Notes
- 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 the DTC P0480 is not shown and the cooling fan operates during the KOER self-test.
- If DTC P0480 is shown, perform the DTC troubleshooting procedure. (See DTC P0480 ).
- If the cooling fans do not operate, proceed to the following:
- Verify the clicking sound of the cooling fan relay when the ignition switch is turned from the off to the ON position.
- If there is no the clicking sound, inspect the cooling fan relay for an open circuit between the ignition switch and the cooling fan relay.
- If there is a clicking sound, go to the next step.
- Inspect the following parts in the indicated order in accordance with fan operation conditions.