 DTC DETECTION LOGIC
NOTE:
If DTC P0506 is displayed with other DTC, first perform the trouble diagnosis for the other DTC.
DTC No.
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Trouble diagnosis name
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DTC detecting condition
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Possible cause
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P0506
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Idle speed control system RPM lower than expected
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The idle speed is less than the target idle speed by 100 rpm or more.
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- Electric throttle control actuator
- Intake air leak
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 DTC CONFIRMATION PROCEDURE
 1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test. - Turn ignition switch OFF and wait at least 10 seconds.
- Turn ignition switch ON.
- Turn ignition switch OFF and wait at least 10 seconds.
If the target idle speed is out of the specified value, perform Special Repair Requirement (GT-R certified NISSAN dealer), before conducting DTC Confirmation Procedure.TESTING CONDITION:- Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.
- Always perform the test at a temperature above −10°C(14°F).
>>GO TO 2.
 2.PERFORM DTC CONFIRMATION PROCEDURE
- Start engine and warm it up to normal operating temperature.
- Turn ignition switch OFF and wait at least 10 seconds.
- Turn ignition switch ON.
- Turn ignition switch OFF and wait at least 10 seconds.
- Restart engine and run it for at least 1 minute at idle speed.
- Check 1st trip DTC.
Is 1st trip DTC detected?
YES >>Go to Diagnosis Procedure (GT-R certified NISSAN dealer). NO >>INSPECTION END
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