Using Vacuum Pump

Whole system check




1. Disconnect the vacuum hose between the purge solenoid valve and the charcoal canister from the purge solenoid valve side
2. Insert hose on the vacuum pump.
3. Connect the SSTs (NGS tester) to DLC-2.
4. Turn the ignition switch on.




5. Select GENERIC OBD-II FUNCTIONS and press the TRIGGER.




6. Press Number 8 under CONT to continue the GENERIC OBD-II FUNCTIONS.

NOTE:
- ON BOARD DEVICE CONTROL function is cancelled under the following conditions:
- 10 min after the TRIGGER on the NGS tester is depressed
- When engine is started
- If the pressure in the evaporative emission control system exceeds 9.8 kPa (73 mmHg, 2.9 inHg}

- Therefore, the following tests, Steps 7 through 15, should be conducted under the following conditions:
- Within 10 min after the TRIGGER on the NGS tester is depressed
- Ignition switch is on, but engine is not started.
- Pressure is less than 9.8 kPa {73 mmHg, 2.9 inHg}




7. Turn the menu dial clockwise or counterclockwise to select the ON BOARD DEVICE CONTROL and press the TRIGGER.
8. Press CANCEL two times.




9. Select DIAGNOSTIC DATA LINK and press the TRIGGER.




10. Select PCM-POWERTRAIN CONTROL MODULE and press the TRIGGER.




11. Select PID/DATA MONITOR AND RECORD and press TRIGGER.




12. Press Number 5 under CLEAR to clear previously selected PIDs.




13. Turn the menu dial clockwise or counterclockwise to select FTP and press TRIGGER.




14. Press Number 7 under START to view PIDs.




15. Apply vacuum of 1.7 kPa (13 mmHg, 0.5 inHg) and they should remain at the specified readings for a minimum of 2 min.
16. Return to the "Fuel Tank Pressure, Graph Recording Procedure", and answer questions.

Inspection from charcoal canister to fuel tank

1. Inspect for loose and improperly connected hoses between the charcoal canister and the fuel tank. (See EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM LOCATION INDEX.)




2. Disconnect the vacuum hose between the charcoal canister and the pressure control valve from the charcoal canister.
3. Insert hose on the vacuum pump.
4. Connect the SSTs (NGS tester) to DLC-2.
5. Turn the ignition switch on.




6. Select GENERIC OBD-II FUNCTIONS and press the TRIGGER.




7. Press Number 8 under CONT to continue the GENERIC OBD-II FUNCTIONS.

NOTE:
- ON BOARD DEVICE CONTROL function is cancelled under the following conditions:
- 10 min after the TRIGGER on the NGS tester is depressed
- When engine is started
- If the pressure in the evaporative emission control system exceeds 9.8 kPa {73 mmHg, 2.9 inHg}

- Therefore, the following tests, Steps 8 through 16, should be conducted under the following conditions:
- Within 10 min after TRIGGER on the NGS tester is depressed
- Ignition switch is on, but engine is not started.
- Pressure is less than 9.8 kPa {73 mmHg, 2.9 inHg}




8. Turn the menu dial clockwise or counterclockwise to select the ON BOARD DEVICE CONTROL and press the TRIGGER.
9. Press CANCEL two times.




10. Select DIAGNOSTIC DATA LINK and press the TRIGGER.




11. Select PCM-POWERTRAIN CONTROL MODULE and press the TRIGGER.




12. Select PID/DATA MONITOR AND RECORD and press the TRIGGER.




13. Press Number 5 under CLEAR to clear previously selected PIDs.




14. Turn the menu dial clockwise or counterclockwise to select the FTP and press TRIGGER.




15. Press the Number 7 under START to view PIDs.




16. Apply vacuum of 1.7 kPa {13 mmHg, 0.5 inHg} and they should remain at the specified readings for a minimum of 2 min.
17. Return to the "Fuel Tank Pressure, Graph Recording Procedure", and answer questions.

Inspection from charcoal canister to purge solenoid valve

1. Inspect for loose and improperly connected hoses between the charcoal canister and the purge solenoid valve. (See EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM LOCATION INDEX.)




2. Disconnect the vacuum hose between the charcoal canister and the purge solenoid valve from the charcoal canister.
3. Insert hose on the vacuum pump.
4. Apply vacuum of 3.3 kPa (25 mmHg, 1.0 inHg} and they should remain at the specified readings for a minimum of 2 min.
5. Return to the "Fuel Tank Pressure, Graph Recording Procedure", and answer questions.