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DTC P0480:00: Notes

DTC P0480:00 (MZR 1.5) DETECTION CONDITION AND POSSIBLE CAUSES

DTC P0480:00 Cooling fan relay No. 1 control circuit problem
DETECTION CONDITION 
  • If the voltage remains low or high, the PCM determines that the cooling fan relay No. 1 control circuit has a malfunction.

    Diagnostic support note 

  • This is a continuous monitor (other).
  • The MIL does not illuminate.
  • FREEZE FRAME DATA (Mode 2)/Snapshot data is not available.
  • The DTC is stored in the PCM memory.
POSSIBLE CAUSE 
  • Cooling fan relay No. 1 malfunction
  • Short to ground or open circuit in cooling fan relay No. 1 power supply circuit
    • Short to ground in wiring harness between METER 10 A fuse and cooling fan relay No. 1 terminal A
    • METER 10 A fuse malfunction
    • Open circuit in wiring harness between ignition switch and cooling fan relay No. 1 terminal A
  • Short to ground in wiring harness between cooling fan relay No. 1 terminal E and PCM terminal 1AV
  • PCM connector or terminals malfunction
  • Short to power supply in wiring harness between cooling fan relay No. 1 terminal E and PCM terminal 1AV
  • Open circuit in wiring harness between cooling fan relay No. 1 terminal E and PCM terminal 1AV
  • PCM malfunction
G06940398
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