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Home >> Mazda >> 2017 >> CX-5 Grand Select, FWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> On-Board Diagnostic - Engine Control System (2 Of 5) >> DTC P0482-00: Cooling Fan Relay No. 1 And No. 3 Control Circuit Malfunction >> Notes

DTC P0482-00: Cooling Fan Relay No. 1 And No. 3 Control Circuit Malfunction: Notes

DTC DETECTION DESCRIPTION

DTC P0482:00 Cooling fan relay No. 1 and No. 3 control circuit malfunction
DETECTION CONDITION
  • The cooling fan relay No. 1 and No. 3 control voltage at the PCM terminal 2AV is low or cooling fan relay No. 1 and No. 3 control current is high for a continuous 5 s relative to the PCM control signal.

    Diagnostic support note

  • This is a continuous monitor (other).
  • The check engine light does not illuminate.
  • FREEZE FRAME DATA is not available.
  • Snapshot data is available.
  • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION
  • Not applicable
POSSIBLE CAUSE
  • Cooling fan relay No. 1 and/or No. 3 malfunction
  • Short to ground or open circuit in cooling fan relay No. 1 and/or No. 3 power supply circuit
    • Short to ground in wiring harness between the following terminals:
  • ENGINE3 15 A fuse-Cooling fan relay No. 1 terminal A
    • ENGINE3 15 A fuse-Cooling fan relay No. 3 terminal A
    • ENGINE3 15 A fuse malfunction
    • Open circuit in wiring harness between the following terminals:
  • Main relay terminal C-Cooling fan relay No. 1 terminal A
    • Main relay terminal C-Cooling fan relay No. 3 terminal A
    • Short to ground in wiring harness between the following terminals:
    • Cooling fan relay No. 1 terminal E-PCM terminal 2AV
      • Cooling fan relay No. 3 terminal E-PCM terminal 2AV
  • PCM connector or terminals malfunction
  • Short to power supply in wiring harness between the following terminals:
    • Cooling fan relay No. 1 terminal E-PCM terminal 2AV
      • Cooling fan relay No. 3 terminal E-PCM terminal 2AV
  • Open circuit in wiring harness between the following terminals:
    • Cooling fan relay No. 1 terminal E-PCM terminal 2AV
      • Cooling fan relay No. 3 terminal E-PCM terminal 2AV
  • PCM malfunction
G11430082