DTC Diagnosis Procedure
- CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR FOR WATER
- Turn ignition switch OFF.
- Disconnect EVAP control system pressure sensor harness connector.
- 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.
- CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY
- Turn ignition switch ON.
- Check the voltage between EVAP control system pressure sensor harness connector and ground.
+
-
Voltage
(Approx.)
EVAP control system pressure sensor
Connector
Terminal
C4
3
Ground
5 V
Is the inspection result normal?
YES
GO TO 4.
NO
GO TO 3.
- CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Check the continuity between EVAP control system pressure sensor harness connector and ECM harness connector.
+
-
Continuity
EVAP control system pressure sensor
ECM
Connector
Terminal
Connector
Terminal
C4
3
E16
125
Existed
- 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
- CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR GROUND CIRCUIT
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Check the continuity between EVAP control system pressure sensor harness connector and ECM harness connector.
+
-
Continuity
EVAP control system pressure sensor
ECM
Connector
Terminal
Connector
Terminal
C4
1
E16
148
Existed
- Also check harness for short to power.
Is the inspection result normal?
YES
GO TO 5.
NO
Repair or replace error-detected parts.
- CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR SIGNAL CIRCUIT
- Check the continuity between EVAP control system pressure sensor harness connector and ECM harness connector.
+
-
Continuity
EVAP control system pressure sensor
ECM
Connector
Terminal
Connector
Terminal
C4
2
E16
121
Existed
- 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.
- Check the continuity between EVAP control system pressure sensor harness connector and ECM harness connector.
- 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 7.
NO
Clean the rubber tube using an air blower, repair or replace rubber tube.
- CHECK EVAP CANISTER VENT CONTROL VALVE
Refer to Component Inspection .
Is the inspection result normal?
YES
GO TO 8.
NO
Replace EVAP canister vent control valve. Refer to Removal and Installation .
- CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
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 .
- CHECK IF EVAP CANISTER IS SATURATED WITH WATER
- Remove EVAP canister (1) with EVAP canister vent control valve (2) and EVAP control system pressure sensor attached.
- Check if water will drain from the EVAP canister.
Does water drain from EVAP canister?
YES
GO TO 10.
NO
Check intermittent incident. Refer to Intermittent Incident .
- 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 2.5 kg (5.5 lb).
Is the inspection result normal?
YES
Check intermittent incident. Refer to Intermittent Incident .
NO
GO TO 11.
- 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. Refer to Removal and Installation .