Diagnosis Procedure

1. Turn ignition switch OFF.
2. Check ground connection M95. Refer to Ground Inspection in "CIRCUIT INSPECTION ".

Is the inspection result normal? 

YES: GO TO 2.

NO: Repair or replace ground connection.

1. Disconnect EVAP control system pressure sensor harness connector.
2. Check sensor harness connector for water.

   Water should not exist. 

Is the inspection result normal? 

YES: GO TO 3.

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.
   TERMINALS VOLTAGE REFERENCE
   
   

   EVAP control system pressure sensor		Ground	Voltage
   Connector	Terminal
   B252	3	Ground	Approx. 5V

Is the inspection result normal? 

YES: GO TO  10.

NO: GO TO 4.

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.
   TERMINALS CONTINUITY REFERENCE
   
   

   EVAP control system pressure sensor		ECM		Continuity
   Connector	Terminal	Connector	Terminal
   B252	3	M107	107	Existed

Is the inspection result normal? 

YES: GO TO  6.

NO: GO TO 5.

Check the following.

• Harness connectors M7, B1
• Harness connectors B31, B251
• Harness for open between ECM and EVAP control system pressure sensor

  Repair open circuit.

Check harness for short to power and short to ground, between the following terminals.

Is the inspection result normal? 

YES: GO TO 7.

NO: Repair short to ground or short to power in harness or connectors.

Check the following.

• Crankshaft position sensor (POS) (Refer to "COMPONENT INSPECTION ".)
• Camshaft position sensor (PHASE) (bank 2) (Refer to "COMPONENT INSPECTION ".)
• Exhaust valve timing control position sensor (bank 2) (Refer to "COMPONENT INSPECTION ".)
• Battery current sensor (Refer to "COMPONENT INSPECTION ".)
• Refrigerant pressure sensor (Refer to "COMPONENT INSPECTION ".)

Is the inspection result normal? 

YES: GO TO 8.

NO: Replace malfunctioning component.

Refer to "COMPONENT INSPECTION ".

Is the inspection result normal? 

YES: GO TO  20.

NO: GO TO 9.

1. Replace accelerator pedal assembly
2. Go to "SPECIAL REPAIR REQUIREMENT ".

   INSPECTION END

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.
   TERMINALS CONTINUITY REFERENCE
   
   

   EVAP control system pressure sensor		ECM		Continuity
   Connector	Terminal	Connector	Terminal
   B252	1	M107	112	Existed

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

Is the inspection result normal? 

YES: GO TO  12.

NO: GO TO 11.

Check the following.

• Harness connectors B251, B31
• Harness connectors B1, M7
• Harness for open or short between EVAP control system pressure sensor and ECM

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

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

   EVAP control system pressure sensor		ECM		Continuity
   Connector	Terminal	Connector	Terminal
   B252	2	M107	102	Existed

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

Is the inspection result normal? 

YES: GO TO  14.

NO: GO TO 13.

Check the following.

• Harness connectors B251, B31
• Harness connectors B1, M7
• Harness for open or short between EVAP control system pressure sensor and ECM

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

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 15.

NO: Clean the rubber tube using an air blower, repair or replace rubber tube.

Refer to "COMPONENT INSPECTION ".

Is the inspection result normal? 

YES: GO TO 16.

NO: Replace EVAP canister vent control valve.

Refer to "COMPONENT INSPECTION ".

Is the inspection result normal? 

YES: GO TO 17.

NO: Replace EVAP control system pressure sensor.

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 (1).

   2 : EVAP canister vent control valve

Does water drain from EVAP canister? 

YES: GO TO 18.

NO: GO TO  20.

Fig 1: Checking If Water Will Drain 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). 

Is the inspection result normal? 

YES: GO TO  20.

NO: GO TO 19.

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 "INTERMITTENT INCIDENT ".

INSPECTION END