2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 484
8. Check EVAP control system pressure sensor value at idle speed and note it.
9. Establish and maintain the following conditions for at least 1 minute.
10. Verify that EVAP control system pressure sensor value stays 0.1 V less than the value at idle speed (measured at step 6) for at least 1 second.
Is the inspection result normal?
YES - INSPECTION END
NO - Go to See: P Code Charts/P0441.
Diagnosis Procedure
1.CHECK EVAP CANISTER
1. Turn ignition switch OFF.
2. Check EVAP canister for cracks.
Is the inspection result normal?
YES-1 - With CONSULT-III: GO TO 2.
YES-2 - Without CONSULT-III: GO TO 3.
NO - Replace EVAP canister.
2.CHECK PURGE FLOW
With CONSULT-III
1. Disconnect vacuum hose connected to EVAP canister purge volume control solenoid valve at EVAP service port.
2. Start engine and let it idle.
3. Select "PURG VOL CONT/V" in "ACTIVE TEST" mode with CONSULT-III.
4. Touch "Qd" and "Qu" on CONSULT-III screen to adjust "PURG VOL CONT/V" opening and check vacuum existence.
Is the inspection result normal?
YES - GO TO 7.
NO - GO TO 4.
3.CHECK PURGE FLOW
Without CONSULT-III
1. Start engine and warm it up to normal operating temperature.
2. Stop engine.
3. Disconnect vacuum hose connected to EVAP canister purge volume control solenoid valve at EVAP service port and install vacuum gauge.
For the location of EVAP service port, See: Powertrain Management/Emission Control Systems/Evaporative Emissions System/Description
and Operation/System Diagram.
4. Start engine and let it idle.
Do not depress accelerator pedal even slightly.
5. Check vacuum gauge indication before 60 seconds pass after starting engine.
Vacuum should not exist.
6. Rev engine up to 2,000 rpm after 100 seconds pass after starting engine.
Vacuum should exist.
Is the inspection result normal?
YES - GO TO 7.
NO - GO TO 4.
4.CHECK EVAP PURGE LINE
