Dtc P2504 [Z6] - Mazda 3 Workshop Manual

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
- Generator terminal P (wiring
harness-side) and PCM terminal
2AR (wiring harness-side)
• Is there continuity?
VERIFY TROUBLESHOOTING OF DTC
P2503 COMPLETED
• Make sure to reconnect all disconnected
connectors.
8
• Clear the DTC from the PCM memory using
the WDS or equivalent.
• Start the engine.
• Is same DTC present?
VERIFY AFTER REPAIR PROCEDURE
• Perform the "AFTER REPAIR
PROCEDURE".
9
(See AFTER REPAIR PROCEDURE
• Are any DTCs present?
DTC P2504
DETECTION
CONDITION
POSSIBLE CAUSE
Downloaded from
[Z6].)

DTC P2504 [Z6]

Charging system voltage high
• The PCM determines that the generator output voltage is more than 18.5
V or battery voltage is more than 16.0 V while the engine running.
• Short to power supply in wiring harness between generator connector
terminal D and PCM connector terminal 2AN
• Generator malfunction
• PCM and/or generator are poorly connected.
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Replace the PCM, then go to the next step.
Yes
(See PCM REMOVAL/INSTALLATION
No Go to the next step.
Go to the applicable DTC inspection.
Yes
(See DTC TABLE [Z6].)
No DTC troubleshooting completed.
- automotive repair manuals website
[Z6].)
B3E010202500W03