 1.CHECK GROUND CONNECTION
- Turn ignition switch OFF.
- 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
- Disconnect EVAP control system pressure sensor harness connector.
- 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
- Turn ignition switch ON.
- 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
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- 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
|
- 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
- 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
|
- 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 RUBBER TUBE
- Disconnect rubber tube connected to EVAP canister vent control valve.
- Check the rubber tube for clogging.
Is the inspection result normal?
YES >>GO TO 10. NO >>Clean the rubber tube using an air blower, repair or replace rubber tube.
 10.CHECK EVAP CANISTER VENT CONTROL VALVE
 11.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
 12.CHECK IF EVAP CANISTER SATURATED WITH WATER
- Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor attached.
- 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 13. NO >>GO TO 15.
 13.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 2.1 kg (4.6 lb).Is the inspection result normal? YES >>GO TO 15. NO >>GO TO 14.
 14.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.
 15.CHECK INTERMITTENT INCIDENT
|