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
   B3	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
   B3	3	F11	71	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
   B3	1	F11	68	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
   B3	2	F11	43	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.

Check the EVAP control system pressure sensor. Refer to "COMPONENT INSPECTION ".

Is the inspection result normal? 

YES: Check intermittent incident. Refer to "INTERMITTENT INCIDENT ".

NO: Replace EVAP control system pressure sensor. Refer to "REMOVAL AND INSTALLATION ".