Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE POWER SUPPLY

Turn ignition switch OFF.
Disconnect EVAP canister purge volume control solenoid valve harness connector.
Turn ignition switch ON.

Check the voltage between EVAP canister purge volume control solenoid valve harness connector and ground.

+		-	Voltage
EVAP canister purge volume control solenoid valve
Connector	Terminal
F29	1	Ground	Battery voltage

Is the inspection result normal?

YES

GO TO 2.

Perform the trouble diagnosis for power supply circuit.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT

Turn ignition switch OFF.
Disconnect ECM harness connector.

Check the continuity between EVAP canister purge volume control solenoid valve harness connector and ECM harness connector.

EVAP canister purge volume control solenoid valve		ECM		Continuity
Connector	Terminal	Connector	Terminal	Continuity
F29	2	F13	54	Existed

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

GO TO 3.

Repair open circuit, short to ground or short to power in harness or connectors.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR
1. Disconnect EVAP control system pressure sensor harness connector.
2. Check that water is not inside connectors.
Is the inspection result normal?

YES

GO TO 4.

NO

Replace EVAP control system pressure sensor. Refer to Removal and Installation .
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
Check EVAP control system pressure sensor. Refer to Component Inspection .

Is the inspection result normal?

YES

With CONSULT: GO TO 5.

YES

Without CONSULT: GO TO 6.

NO

Replace EVAP control system pressure sensor. Refer to Removal and Installation .
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
With CONSULT
1. Turn ignition switch OFF.
2. Reconnect harness connectors disconnected.
3. Start engine.
4. Perform "PURG VOL C/V" in "ACTIVE TEST" mode with CONSULT. Check that engine speed varies according to the valve opening.
Does engine speed vary according to the valve opening?

YES

GO TO 7.

NO

GO TO 6.
CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
Check EVAP canister purge volume control solenoid valve. Refer to Component Inspection .

Is the inspection result normal?

YES

GO TO 7.

NO

Replace EVAP canister purge volume control solenoid valve. Refer to Component Parts Location .
CHECK RUBBER TUBE FOR CLOGGING
1. Disconnect rubber tube connected to EVAP canister vent control valve.
2. Check the rubber tube for clogging.
Is the inspection result normal?

YES

GO TO 8.

NO

Clean the rubber tube using an air blower.
CHECK EVAP CANISTER VENT CONTROL VALVE
Check EVAP canister vent control valve. Refer to Component Inspection .

Is the inspection result normal?

YES

GO TO 9.

NO

Replace EVAP canister vent control valve. Refer to Removal and Installation .
CHECK IF EVAP CANISTER IS SATURATED WITH WATER
Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor attached. Refer to Removal and Installation .

Courtesy of NISSAN NORTH AMERICA, INC.

Does water drain from the EVAP canister?

YES

GO TO 10.

NO

INSPECTION END
CHECK EVAP CANISTER
Weigh the EVAP canister with the EVAP canister vent control valve and EVAP control system pressure sensor attached.

The weight should be less than 2.1 kg (4.6 lb).

Is the inspection result normal?

YES

INSPECTION END

NO

GO TO 11.
DETECT MALFUNCTIONING PART
Check the following.
- EVAP canister for damage
- EVAP hose between EVAP canister and vehicle frame for clogging or poor connection
Repair hose or replace EVAP canister. Refer to Removal and Installation .