DTC Diagnosis Procedure

1. Turn ignition switch OFF.
2. Disconnect EVAP control system pressure sensor harness connector.
3. Check sensor harness connector for water.

   Water should not exist.

Is the inspection result normal?

YES

GO TO 2.

NO

Repair or replace harness connector.

1. Turn ignition switch ON.
2. Check the voltage between EVAP control system pressure sensor harness connector and ground.

   EVAP control system pressure sensor		Ground	Voltage (Approx.)
   Connector	Terminal
   B61	3	Ground	5 V

Is the inspection result normal?

YES

GO TO 4.

NO

GO TO 3.

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between EVAP control system pressure sensor harness connector and ECM harness connector.

   EVAP control system pressure sensor		ECM		Continuity
   Connector	Terminal	Connector	Terminal
   B61	3	E19	135	Existed

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

Is the inspection result normal?

YES

Perform the trouble diagnosis for power supply circuit.

NO

Repair or replace error-detected parts

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between EVAP control system pressure sensor harness connector and ECM harness connector.

   EVAP control system pressure sensor		ECM		Continuity
   Connector	Terminal	Connector	Terminal
   B61	1	E19	158	Existed

4. Also check harness for short to power.

Is the inspection result normal?

YES

GO TO 5.

NO

Repair or replace error-detected parts.

1. Check the continuity between EVAP control system pressure sensor harness connector and ECM harness connector.

   EVAP control system pressure sensor		ECM		Continuity
   Connector	Terminal	Connector	Terminal
   B61	2	E19	131	Existed

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

Is the inspection result normal?

YES

GO TO 6.

NO

Repair or replace error-detected parts.

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 7.

NO

Clean the rubber tube using an air blower, repair or replace rubber tube.

Refer to DTC Description .

Is the inspection result normal?

YES

GO TO 8.

NO

Replace EVAP canister vent control valve. Refer to Removal and Installation .

Refer to Component Inspection .

Is the inspection result normal?

YES

GO TO 9.

NO

Replace EVAP control system pressure sensor. Refer to Removal and Installation .

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.

   Courtesy of NISSAN NORTH AMERICA, INC.

Does water drain from EVAP canister?

YES

GO TO 10.

NO

Check intermittent incident. Refer to Inspection .

Weigh the EVAP canister with the EVAP canister vent control valve and EVAP control system pressure sensor attached.

The weight should be less than 1.6 kg (3.5 lb).

Is the inspection result normal?

YES

Check intermittent incident. Refer to Inspection .

NO

GO TO 11.

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 .