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DTC P0481: Notes

DTC P0481[L3 WITH TC] DETECTION CONDITION AND POSSIBLE CAUSES

DTC P0481 Fan control circuit problem
DETECTION CONDITION 
  • The PCM monitors the input voltage from the fan control module NO. 2. If the voltage remains low or high, the PCM determines that the fan control circuit has a malfunction.

Diagnostic support note 
  • This is a continuous monitor (Other).
  • The MIL does not illuminate.
  • FREEZE FRAME DATA is not available.
  • The DTC is stored in the PCM memory.
POSSIBLE CAUSE 
  • Fan control module NO. 2 malfunction
  • Connector or terminal malfunction
  • Short to the power supply in the wiring harness between fan control module NO. 2 terminal 2B and PCM terminal 1R
  • Short to ground in the wiring harness between fan control module NO. 2 terminal 2B and PCM terminal 1R
  • Open circuit in the wiring harness between fan control module NO. 2 terminal 2B and PCM terminal 1R
  • PCM malfunction
G04859397Courtesy of MAZDA MOTORS CORP.
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