Diagnostic Procedure

WARNING: This page is about a different variant/trim than selected.

CHECK RUBBER TUBE
1. Turn ignition switch OFF.
2. Disconnect rubber tube connected to EVAP canister vent control valve (3).
3. Check the rubber tube for clogging.
  - This illustration is a view from under vehicle
  - EVAP control system pressure sensor (1)
  - EVAP canister (2)
OK or NG

OK: GO TO 2.

NG: Clean rubber tube using an air blower.

Fig 1: Identifying EVAP Control System Pressure Sensor, EVAP Canister And EVAP Canister Vent Control Valve
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK EVAP CANISTER VENT CONTROL VALVE
Refer to "COMPONENT INSPECTION ".

OK or NG

OK: GO TO 3.

NG: Replace EVAP canister vent control valve.
CHECK IF EVAP CANISTER SATURATED WITH WATER
1. Remove EVAP canister with EVAP canister vent control valve attached.
2. Does water drain from the EVAP canister?
  
  Fig 2: Checking EVAP Canister For Water
  Courtesy of NISSAN MOTOR CO., U.S.A.
Yes or No

Yes: GO TO 4.

No: GO TO 6.
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 1.9 kg (4.2 lb).

OK or NG

OK: GO TO 6.

NG: GO TO 5.
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.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR
1. Disconnect EVAP control system pressure sensor (1) harness connector.
  - This illustration is a view from under vehicle
  - EVAP canister (2)
  - EVAP canister vent control valve (3)
2. Check connectors for water.
  Water should not exist.
  
  Fig 3: Identifying EVAP Control System Pressure Sensor, EVAP Canister And EVAP Canister Vent Control Valve
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG

OK: GO TO 7.

NG: Replace EVAP control system pressure sensor.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
Refer to "COMPONENT INSPECTION ".

OK or NG

OK: GO TO 8.

NG: Replace EVAP control system pressure sensor.
CHECK INTERMITTENT INCIDENT
Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

: INSPECTION END