Dtc P2503 - Mazda 2002 6 Workshop Manual

STEP
6 VERIFY TROUBLESHOOTING OF DTC P2502
COMPLETED
• Make sure to reconnect all connectors.
• Clear DTC from memory using WDS or
equivalent.
• Perform KOER self-test.
(See F–66 KOEO/KOER
• Is same DTC present?
7 VERIFY AFTER REPAIR PROCEDURE
• Perform "After Repair Procedure".
(See F–66 AFTER REPAIR
• Is there any DTC present?
End Of Sie

DTC P2503

DTC P2503 Generator output voltage signal no electricity
• PCM needs more than 20 A from generator, and judges generator output voltage to be below 8.5 V during
DETECTION
CONDITION engine running.
• Generator malfunction
• PCM and/or generator are poorly connected.
POSSIBLE
• Open and/or short to GND in wiring from between generator terminal P and PCM terminal 1AA
CAUSE
• Open and/or short to GND in wiring from between generator terminal D and PCM terminal 1AD
• Drive belt misadjustment
Diagnostic procedure
STEP
1 PERFORM DTC CONFIRMATION PROCEDURE
• Perform DTC CONFIRMATION PROCEDURE.
(See F–66 DTC CONFIRMATION
PROCEDURE.)
• Is same DTC present?
2 INSPECT DRIVE BELT CONDITION
• Verify that drive belt auto tensioner indicator
mark does not exceed limit.
• Is front drive belt okay?
ON-BOARD DIAGNOSTIC
INSPECTION
SELF-TEST.)
PROCEDURE.)
INSPECTION
Yes Replace PCM, then go to next step.
(See F–43 PCM REMOVAL/INSTALLATION.)
No Go to next step.
Yes Go to applicable DTC troubleshooting.
(See F–67 DTC TABLE.)
No Troubleshooting completed.
Yes Go to next step.
No Intermittent concern exists. Go to INTERMITTENT
CONCERN TROUBLESHOOTING procedure.
(See F–227 INTERMITTENT CONCERN
TROUBLESHOOTING.)
Yes Go to next step.
No Replace and/or adjust drive belt, then go to Step 9.
ACTION
A6E397001083W09
ACTION
F–177
F