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Home >> Mazda >> 2011 >> 2 Touring, 1.5 Z, Standard >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic [Engine Control System MZR 1.5] >> DTC P2503:00 >> Notes

DTC P2503:00: Notes

DTC P2503:00 (MZR 1.5) DETECTION CONDITION AND POSSIBLE CAUSES

DTC P2503:00 Charging system voltage low input
DETECTION CONDITION 
  • If 5 s or more  have elapsed with the generator output voltage 8.49 V or lower  and the battery output voltage 10 V or more (even though the generator target output current while the engine is running is 19.5 A or more  ), the PCM determines that the charging system 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 
  • Drive belt exceeds limit
  • Generator connector or terminals malfunction
  • Short to ground in wiring harness between the following terminals:
    • Generator terminal D-PCM terminal 2AF
    • Generator terminal P-PCM terminal 2AE
  • PCM connector or terminals malfunction
  • Open circuit in wiring harness between the following terminals:
    • Generator terminal D-PCM terminal 2AF
    • Generator terminal P-PCM terminal 2AE
  • Generator malfunction
  • PCM malfunction
G06940420