Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSNISSAN-DATSUN2004ALTIMA S, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEENGINE CONTROL SYSTEM - 2.5LDTC P0506: ISC SYSTEMDTC CONFIRMATION PROCEDURENOTES
2004 Nissan-Datsun Altima S, Automatic
DTC Confirmation Procedure: Notes
2004 Nissan-Datsun Altima S, AutomaticSECTION Notes
NOTE:
- If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.
- If the target idle speed is out of the specified value, perform " IDLE AIR VOLUME LEARNING ", before conducting DTC Confirmation Procedure. For the target idle speed, refer to the " SERVICE DATA AND SPECIFICATIONS (SDS) ".
TESTING CONDITION:
- Before performing the following procedure, confirm that battery voltage is more than 11V at idle.
- Always perform the test at a temperature above 10°C (14°F).
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.