Diagnostic Procedure

1. Turn ignition switch OFF.
2. Disconnect EVAP canister purge volume control solenoid valve harness connector.
3. Turn ignition switch ON.
   Fig 1: Identifying EVAP Canister Purge Volume Control Solenoid Valve

   Courtesy of NISSAN MOTOR CO., U.S.A.
4. Check voltage between EVAP canister purge volume control solenoid valve terminal 1 and ground with CONSULT-II or tester.

   Voltage: Battery voltage 

OK or NG

1. OK : GO TO  3.
2. NG : GO TO 2.
   Fig 2: Checking Voltage Between Terminal 1 And Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.

Check the following.

• Harness connectors E20, F32
• Harness connectors F44, F101
• IPDM E/R harness connector E122
• Harness for open or short between EVAP canister purge volume control solenoid valve and IPDM E/R
• Harness for open or short between ECM and IPDM E/R

1. : Repair harness or connectors.

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 10 and EVAP canister purge volume control solenoid valve terminal 2. Refer to Wiring Diagram .

   Continuity should exist. 

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

OK or NG

1. OK : GO TO  5.
2. NG : GO TO 4.

Check the following.

• Harness connectors F44, F101
• Harness for open or short between EVAP canister purge volume control solenoid valve and ECM

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

1. Disconnect EVAP control system pressure sensor harness connector.
   Fig 3: Disconnecting EVAP Control System Pressure Sensor Harness Connector

   Courtesy of NISSAN MOTOR CO., U.S.A.
2. Check connectors for water.

   Water should not exist. 

OK or NG

1. OK : GO TO 6.
2. NG : Replace EVAP control system pressure sensor.

Refer to "COMPONENT INSPECTION ".

OK or NG

1. OK (With CONSULT-II) : GO TO 7.
2. OK (Without CONSULT-II) : GO TO  8.
3. NG : Replace EVAP control system pressure sensor.

With CONSULT-II 

1. Turn ignition switch OFF.
2. Reconnect harness connectors disconnected.
3. Start engine.
4. Perform "PURG VOL CONT/V" in "ACTIVE TEST" mode with CONSULT-II. Check that engine speed varies according to the valve opening.

OK or NG

1. OK : GO TO  9.
2. NG : GO TO 8.
   Fig 4: CONSULT-II Diagnosis Function Display

   Courtesy of NISSAN MOTOR CO., U.S.A.

Refer to "COMPONENT INSPECTION ".

OK or NG

1. OK : GO TO 9.
2. NG : Replace EVAP canister purge volume control solenoid valve.

1. Disconnect rubber tube connected to EVAP canister vent control valve.
2. Check the rubber tube for clogging.

OK or NG

1. OK : GO TO 10.
2. NG : Clean the rubber tube using an air blower.

Refer to "COMPONENT INSPECTION ".

OK or NG

1. OK : GO TO 11.
2. NG : Replace EVAP canister vent control valve.

1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor attached.
2. Check if water will drain from the EVAP canister.

Yes or No

1. Yes : GO TO 12.
2. No : GO TO  14.
   Fig 5: Checking Drain Water From EVAP Canister

   Courtesy of NISSAN MOTOR CO., U.S.A.

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). 

OK or NG

1. OK : GO TO 15.
2. NG : GO TO  14.

Check the following.

• EVAP canister for damage
• EVAP hose between EVAP canister and vehicle frame for clogging or poor connection

1. : Repair hose or replace EVAP canister.

Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

1. : INSPECTION END