Dtc P2507 [Lf] - Mazda 3 Workshop Manual

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
• Measure voltage between generator
terminal D (wiring harness-side) and body
ground.
• Is the voltage B+?
INSPECT POOR CONNECTION OF PCM
CONNECTOR
• Turn the ignition switch to off.
• Disconnect PCM connector.
5
• Inspect for poor connection (damaged,
pulled-out terminals, corrosion, etc.).
• Is there a malfunction?
INSPECT GENERATOR CONTROL
CIRCUIT FOR SHORT TO POWER
• Turn the ignition switch to the ON position
(Engine off).
6
• Measure voltage between generator
terminal D (wiring harness-side) and body
ground.
• Is the voltage B+?
INSPECT GENERATOR CONTROL
TERMINAL FOR SHORT TO POWER
• Measure voltage between generator
7
terminal D (part-side) and body ground.
• Is the voltage B+?
VERIFY TROUBLESHOOTING OF DTC
P2504 COMPLETED
• Make sure to reconnect all connectors.
• Clear DTC from PCM memory using WDS
8
or equivalent.
• Perform KOER self-test.
Start the engine.
• Is same DTC present?
VERIFY AFTER REPAIR PROCEDURE
• Perform "After Repair Procedure".
9
(See AFTER REPAIR PROCEDURE
• Is there any DTC present?
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DTC P2507 [LF]

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Yes Repair or replace pins, then go to Step 8.
No Go to the next step.
Repair or replace wiring harness for short to
Yes
power supply, then go to Step 8.
No Go to Step 8.
Repair or replace generator, then go to the
Yes
next step.
No Go to the next step.
Replace PCM, then go to the next step.
Yes
(See PCM REMOVAL/INSTALLATION
No Go to the next step.
Go to applicable DTC troubleshooting.
Yes
(See DTC TABLE [LF].)
No Troubleshooting completed.
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