1.CHECK GROUND CONNECTION

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.
2.CHECK CONNECTOR

1. Disconnect EVAP control system pressure sensor harness connector.
2. Check that water is not inside connectors.

Is the inspection result normal?
YES>>GO TO 3.
NO>>Repair or replace harness connector.
3.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT-I

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 (V)
   Connector | Terminal
   B251 | 3 | Ground | Approx. 5

Is the inspection result normal?
YES>>GO TO 5.
NO>>GO TO 4.
4.DETECT MALFUNCTIONING PART
Check the following.

- Harness connectors F103, M116
- Harness for open between ECM and EVAP control system pressure sensor

>>Repair open circuit, short to ground or short to power in harness or connectors.
5.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

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
   B251 | 1 | F102 | 75 | Existed

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

Is the inspection result normal?
YES>>GO TO 7.
NO>>GO TO 6.
6.DETECT MALFUNCTIONING PART
Check the following.

- Harness connectors F103, M116
- Harness for open or short between EVAP control system pressure sensor and ECM

>>Repair open circuit, short to ground or short to power in harness or connectors.
7.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

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
   B251 | 2 | F102 | 78 | Existed

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

Is the inspection result normal?
YES>>GO TO 9.
NO>>GO TO 8.
8.DETECT MALFUNCTIONING PART
Check the following.

- Harness connectors F103, M116
- Harness for open or short between EVAP control system pressure sensor and ECM

>>Repair open circuit, short to ground or short to power in harness or connectors.
9.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
Refer to Component Inspection (GT-R certified NISSAN dealer).
Is the inspection result normal?
YES>>GO TO 10.
NO>>Replace EVAP control system pressure sensor.
10.CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident.
>>INSPECTION END