Dtc P2503 [Lf] - Mazda 3 Workshop Manual

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
VERIFY AFTER REPAIR PROCEDURE
• Perform "After Repair Procedure".
8
(See AFTER REPAIR PROCEDURE
[LF].)
• Is there any DTC present?
DTC P2503
DETECTION
CONDITION
POSSIBLE CAUSE
Diagnostic procedure
STEP
Downloaded from
Yes
No Troubleshooting completed.

DTC P2503 [LF]

Charging system voltage low
• PCM needs more than 20 A from generator, and judges generator output
voltage to be below 8.5 V during engine running.
• Generator malfunction
• PCM and/or generator are poorly connected
• Open and/or short to GND in wiring from between generator terminal P and
PCM terminal 2AM
• Open and/or short to GND in wiring from between generator terminal D and
PCM terminal 2AQ
• Drive belt misadjustment
INSPECTION
https://carmanualshub.com/
Go to applicable DTC troubleshooting.
(See DTC TABLE [LF].)
ACTION
- automotive repair manuals website
B3E010201083W04