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Home >> Mazda >> 2024 >> CX-90 Turbo Select >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 21 (On-Board Diagnostic - Pcm (VIN A) (2 Of 4)) >> DTC P0480-00: Cooling Fan System: Internal Malfunction (PYUL)

DTC P0480-00: Cooling Fan System: Internal Malfunction (PYUL)

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P0480: 00 (PCM (PYUL)) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location Cooling fan system: Internal malfunction
Detection condition
  • The PCM detects a cooling fan internal malfunction.
Fail-safe
  • Inhibits engine-stop by i-stop control.
Vehicle status when DTCs are output
  • Not applicable
Repeatability verification procedure
  1. Clear the DTC recorded in the memory. (See CLEARING DTC .)
  2. Perform the KOEO or KOER self test. (See DTC INSPECTION .)
Inspection/action procedure
  • Proceed with the inspection/action in the order from Step 1 below.
  • After part repair or replacement, perform the repeatability verifi cation procedure and perform a DTCinspection. (See DTC INSPECTION )
  • If the DTC inspection indicates the same DTC again, go to the next step.
  1. Inspect the cooling fan.

    Purpose/reason (possible cause) 

    Cooling fan malfunction (abnormal voltage of cooling fan motor)

    Referred to service information item 

    See COOLING FAN MOTOR INSPECTION

  2. Replace the PCM.

    Purpose/reason (possible cause) 

    Replace the PCM.

    Referred to service information item 

    (See PCM REMOVAL/INSTALLATION .)

System wiring diagram
  • Not applicable
Function explanation (DTC detection outline)
  • Not applicable