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DTC P2503: Notes

DETECTION CONDITION AND POSSIBLE CAUSE (DTC P2503 - LF, L3)

DTC P2503 Charging system voltage low
DETECTION CONDITION 
  • The PCM needs more than 20  A from generator, and judges generator output voltage to be below 8.5 V  during engine running.

    • Diagnostic support note 

  • This is a continuous monitor (Other).
  • The MIL does not illuminate.
  • PENDING CODE is available if the PCM detects the above malfunction condition.
  • FREEZE FRAME DATA is not available.
  • The DTC is stored in the PCM memory.
POSSIBLE CAUSE 
  • Generator malfunction
  • PCM and/or generator are poorly connected
  • Open and/or short to ground in wiring from between generator terminal P and PCM terminal 2AJ(1), 2AM(2), 2AJ*3
  • Open and/or short to ground in wiring from between generator terminal D and PCM terminal 2AI(1), 2AQ(2), 2AI*3
  • Drive chain misadjustment
G04313435Courtesy of MAZDA MOTORS CORP.
(1) LF MTX, L3 and California emission regulation applicable model with LF ATX
(2) Except for California emission regulation applicable model with LF ATX
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