DTC P2503:00 [LS]: Notes
WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
DETECTION CONDITION & POSSIBLE CAUSES
| DTC P2503:00 |
Charging system voltage low |
| DETECTION CONDITION |
- The PCM needs more than 20 A
from the generator, and determines that the generator output voltage is below 8.5 V
while the engine running.
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 |
- Drive belt misadjustment
- Generator connector or terminal malfunction
- PCM connector or terminal malfunction
- Short to ground in wiring harness between generator terminal D and PCM terminal 2AA
- Short to ground in wiring harness between generator terminal P and PCM terminal 2AF
- Generator malfunction
- Open circuit in wiring harness between generator terminal D and PCM terminal 2AA
- Open circuit in wiring harness between generator terminal P and PCM terminal 2AF
- PCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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