Diagnostic procedure
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STEP
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INSPECTION
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ACTION
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1
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VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
• Has FREEZE FRAME DATA been recorded?
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Yes
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Go to the next step.
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No
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Record the FREEZE FRAME DATA on the repair order, then go to the next step.
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2
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VERIFY RELATED REPAIR INFORMATION AVAILABILITY
• Verify related service repair information availability.
• Is any related repair information available?
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Yes
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Perform repair or diagnosis according to the available repair information.
• If the vehicle is not repaired, go to the next step.
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No
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Go to the next step.
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3
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INSPECT POOR CONNECTION OF GENERATOR CONNECTOR
• Turn the ignition switch to off.
• Disconnect generator connector.
• Inspect for poor connection
(damaged, pulled-out terminals, corrosion, etc.).
• Is there a malfunction?
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Yes
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Repair or replace terminals, then go to Step 8.
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No
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Go to the next step.
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4
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CLASSIFY GENERATOR MALFUNCTION OR OTHER MALFUNCTION
• Turn the ignition switch to the ON position (Engine off).
• Measure voltage between generator terminal D (wiring harness-side) and body ground.
• Is the voltage B+?
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Yes
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Go to the next step.
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No
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Malfunction at generator.
Go to Step 7.
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5
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INSPECT POOR CONNECTION OF PCM CONNECTOR
• Turn the ignition switch to off.
• Disconnect PCM connector.
• Inspect for poor connection
(damaged, pulled-out terminals, corrosion, etc.).
• Is there a malfunction?
|
Yes
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Repair or replace pins, then go to Step 8.
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No
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Go to the next step.
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6
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INSPECT GENERATOR CONTROL CIRCUIT FOR SHORT TO POWER
• Turn the ignition switch to the ON position (Engine off).
• Measure voltage between generator terminal D (wiring harness-side) and body ground.
• Is the voltage B+?
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Yes
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Repair or replace wiring harness for short to power supply, then go to Step 8.
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No
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Go to Step 8.
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7
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INSPECT GENERATOR CONTROL TERMINAL FOR SHORT TO POWER
• Measure voltage between generator terminal D (part-side) and body ground.
• Is the voltage B+?
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Yes
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Repair or replace generator, then go to the next step.
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No
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Go to the next step.
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8
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VERIFY TROUBLESHOOTING OF DTC P2504 COMPLETED
• Make sure to reconnect all connectors.
• Clear DTC from PCM memory using WDS or equivalent.
• Perform KOER self-test.
Start the engine.
• Is same DTC present?
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Yes
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Replace PCM, then go to the next step.
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No
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Go to the next step.
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9
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VERIFY AFTER REPAIR PROCEDURE
• Perform "After Repair Procedure".
• Is there any DTC present?
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Yes
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Go to applicable DTC troubleshooting.
(See DTC TABLE [LF, L3].)
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No
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Troubleshooting completed.
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