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.
Pattern 4
All tests in this area are performed after the engine has been operated for at least 17 minutes. During Pattern 4, accelerator pedal must be held steady. If accelerator pedal is moved during this pattern, test must be repeated.
- Accelerate vehicle to 56 MPH (90 km/hr) then release accelerator and keep released for 10 seconds. After 10 seconds has passed, accelerate vehicle back to 56 MPH (90 km/hr) and hold.
- Stop vehicle and remain stopped for 10 seconds. Accelerate to 30-35 MPH (50-55 km/hr) within 10 seconds and maintain speed for 20 seconds. See M/T SHIFT POINTS table for specified shift points on vehicles with manual transmission. During acceleration hold throttle steady, maintaining.8-1.2 volts on TP sensor as indicated by scan tool. Repeat this pattern at least 10 times or until the EGR system SRT is set.
- Use scan tool to determine vehicle speed.
- This driving pattern may be omitted if appropriate DTC is performed in DTC WORK SUPPORT mode using Nissan CONSULT scan tool. Generic scan tool may have a similar feature. Refer to scan tool manufacturer's instructions.
Use the Manual With the Right Hardware
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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.
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