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.
Testing Condition
- For best results, perform at ambient temperature of -10° C (14° F) or higher.
- For best results, perform at engine COOLANT temperature of -10° C (14° F) to 60° C (140° F).
With CONSULT-II
- Replace thermostat with new one. Refer to THERMOSTAT AND WATER CONTROL VALVE . Use only a genuine NISSAN thermostat as a replacement. If an incorrect thermostat is used, the MIL may come on.
- Turn ignition switch ON.
- Select COOLANT TEMP/S in DATA MONITOR mode with CONSULT-II.
- Check that the COOLANT TEMP/S is above 60° C (140° F).
If it is below 60° C (140° F), go to following step.
If it is above 60° C (140° F), cool down the engine to less than 60° C (140° F), then retry from step 1 .
- Drive vehicle for 10 consecutive minutes at speed of 50-75 MPH (80-120 KM/H).
If 1st trip DTC is detected, go to DIAGNOSTIC PROCEDURE .
With GST
- Follow the procedure With CONSULT-II above.
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.