Diagnostic Procedure

1. Turn ignition switch OFF.
2. Loosen and retighten ground screws on the body.

   Refer to "GROUND INSPECTION ".

   • Body ground (1)

OK or NG 

OK: GO TO 2.

NG: Repair or replace ground connections.

Fig 1: Identifying Body Ground

1. Disconnect EVAP control system pressure sensor (1) harness connector.
   • This illustration is a view from under vehicle
   • EVAP canister (2)
   • EVAP canister vent control valve (3)
2. Check sensor harness connector for water.

   Water should not exist. 

OK or NG 

OK: GO TO 3.

NG: Repair or replace harness connector.

Fig 2: Identifying EVAP Control System Pressure Sensor, EVAP Canister And EVAP Canister Vent Control Valve

1. Turn ignition switch ON.
2. Check voltage between EVAP control system pressure sensor terminal 3 and ground with CONSULT-III or tester.

   Voltage: Approximately 5V 

OK or NG 

OK: GO TO  5.

NG: GO TO 4.

Fig 3: Checking Voltage Between Ignition Coil Terminal 3 And Ground

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between EVAP control system pressure sensor terminal 3 and ECM terminal 76. Refer to WIRING DIAGRAM .

   Continuity should exist. 

OK or NG 

OK: GO TO  6.

NG: GO TO 5.

Check the following.

• Harness connectors E3, F2
• Harness connectors B9, E13
• 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.

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

OK or NG 

OK: GO TO 7.

NG: Repair short to ground or short to power in harness or connectors.

Refer to "TROUBLE DIAGNOSIS ".

OK or NG 

OK: GO TO 8.

NG: Replace refrigerant pressure sensor.

Refer to "COMPONENT INSPECTION ".

OK or NG 

OK: GO TO 9.

NG: Replace crankshaft position sensor (POS).

Refer to "COMPONENT INSPECTION ".

OK or NG 

OK: GO TO  11.

NG: GO TO 10.

1. Replace accelerator pedal assembly.
2. Perform "ACCELERATOR PEDAL RELEASED POSITION LEARNING ".
3. Perform "THROTTLE VALVE CLOSED POSITION LEARNING ".
4. Perform "IDLE AIR VOLUME LEARNING ".

   : INSPECTION END 

Check the following.

• Harness connectors E3, F2
• Harness connectors B9, E13
• 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. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between EVAP control system pressure sensor terminal 1 and ECM terminal 51. Refer to WIRING DIAGRAM .

   Continuity should exist. 

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

OK or NG 

OK: GO TO  14.

NG: GO TO 13.

Check the following.

• Harness connectors E3, F2
• Harness connectors B9, E13
• 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 harness continuity between ECM terminal 42 and EVAP control system pressure sensor terminal 2. Refer to WIRING DIAGRAM .

   Continuity should exist. 

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

OK or NG 

OK: GO TO  16.

NG: GO TO 15.

Check the following.

• Harness connectors E3, F2
• Harness connectors B9, E13
• Harness for open or short between ECM and EVAP control system pressure sensor

: 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, vent and kinked.

OK or NG 

OK: GO TO 17.

NG: Clean the rubber tube using an air blower, repair or replace rubber tube.

Refer to "COMPONENT INSPECTION ".

OK or NG 

OK: GO TO 18.

NG: Replace EVAP canister vent control valve.

Refer to "COMPONENT INSPECTION ".

OK or NG 

OK: GO TO 19.

NG: Replace EVAP control system pressure sensor.

1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor attached.
2. Does water drain from the EVAP canister?

Yes or No 

Yes: GO TO 20.

No: GO TO  22.

Fig 4: Identifying Water Drain From 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 1.9 kg (4.2 lb). 

OK or NG 

OK: GO TO  22.

NG: GO TO 21.

Check the following.

• EVAP canister for damage
• EVAP hose connected to EVAP canister for clogging or poor connection

  : Repair hose or replace EVAP canister.

Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

: INSPECTION END