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: Disconnecting EVAP Canister Purge Volume Control Solenoid Valve Harness Connector

   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 

Fig 2: Checking Voltage Between EVAP Canister Purge Volume Control Solenoid Valve Terminal 1 & Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

1. OK: GO TO  3.
2. NG: GO TO 2.

Check the following.

• Harness for open or short between EVAP canister purge volume control solenoid valve and ECM
• Harness for open or short between EVAP canister purge volume control solenoid valve and ECM relay.
  1. Repair harness or connectors.

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 45 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 (With CONSULT-II): GO TO 4.
2. OK (Without CONSULT-II): GO TO  5.
3. NG: Repair open circuit or short to ground or short to power in harness or connectors.

With CONSULT-II 

1. Reconnect all harness connectors disconnected.
2. Start engine.
3. Perform "PURG VOL CONT/V" in "ACTIVE TEST" mode with CONSULT-II. Check that engine speed varies according to the valve opening.
Fig 3: Identifying Active Test Mode Of Consult-II
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

1. OK: GO TO  6.
2. NG: GO TO 5.

Refer to "COMPONENT INSPECTION ".

OK or NG 

1. OK: GO TO 6.
2. NG: Replace EVAP canister purge volume control solenoid valve.

Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

1. INSPECTION END