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Home >> Mazda >> 2010 >> CX-7 s Touring, 2.3 3, FWD >> Repair and Diagnosis >> Engine Performance >> System >> Symptom Troubleshooting [Engine L3 With TC] >> Engine Control System Operation Inspection >> Cooling Fan Control System Inspection >> Notes

Cooling Fan Control System Inspection: Notes

  1. Connect the M-MDS to the DLC-2.
  2. Start the engine and warm it up to normal operating temperature.
  3. Perform the KOER self test. (See KOEO/KOER SELF TEST [L3 WITH TC] .)
  4. Verify that the DTC P0480:00 or P0481:00 is not shown and the cooling fan operates during the KOER self test.
    • If DTC P0480:00 or P0481:00 is shown, perform the DTC troubleshooting procedure. (See DTC P0480:00 .) (See DTC P0481:00 .)
    • If the cooling fans do not operate, proceed to the following:
    1. Verify the clicking sound of the cooling fan relay when the ignition switch is turned from the off to the ON position.
    2. If there is no the clicking sound, inspect for followings:
      • Cooling fan relay (stuck open)
      • Open circuit in wiring harness between main relay and cooling fan relay
      • Open circuit in wiring harness between PCM terminal 1AO and cooling fan relay
    3. If there is a clicking sound, inspect the following parts in the indicated order in accordance with fan operation conditions.
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