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.
Diagnostic Procedure
- Check Overall Function
Check ASCD indicator under the following conditions.
Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK : Inspection end
- NG : go to 2.
- Check DTC
Check that DTC U1000 or U1001 is not displayed.
OK or NG
- OK : go to 3.
- NG : Perform trouble diagnosis for DTC U1000, U1001. Refer to DTC U1000, U1001 CAN COMMUNICATION LINE .
- Check DTC With Unified Meter And A/C AMP
Refer to SELF-DIAGNOSTIC RESULTS .
OK or NG
- OK : go to 4.
- NG : go to COMMUNICATION LINE INSPECTION .
- Check Intermittent Incident
Refer to TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT .
- Inspection end
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.