Using Vacuum Pump

Whole system inspection
1. Disconnect the vacuum hose between the purge solenoid valve and the catch tank from the purge solenoid valve.
2. Insert hose on the vacuum pump.




3. Connect the SSTs (NGS tester) to the DLC-2.

NOTE:
- The following conditions cancel the ON BOARD DEVICE CONTROL function:
- Ten minutes after the TRIGGER on the NGS tester is depressed.
- When engine is started.
- If the pressure in the EVAP control system exceeds 6.43 kPa {48.2 mmHg, 1.9 inHg}.

- Therefore, the following tests, Step 4 through 9, should be conducted under the following conditions.
- Within 10 minutes after TRIGGER on the NGS tester is depressed.
- Without starting the engine.




4. Select the ON BOARD DEVICE CONTROL of the GENERIC OBD - II FUNCTIONS and press TRIGGER.
5. Press CANCEL two times.
6. Select the PID/DATA MONITOR AND RECORD function on the NGS display.
7. Select the FTP PID.




8. Press the START to view PID.




9. Apply 1.7 kPa {13 mmHg, 0.5 inHg} vacuum.
Vacuum should hold at the specified readings for a minimum of 2 minutes.
- If the FTP PID value does not hold, inspect the FTP sensor.
- If the fuel tank pressure sensor is okay, carry out the "Inspection from charcoal canister to purge solenoid valve".

Inspection from charcoal canister to purge solenoid valve
1. Inspect for loose and wrongly connected hoses between the charcoal canister and the purge solenoid valve.
2. Disconnect fuel tank side of the vacuum hose at the charcoal canister.




3. Insert hose on the vacuum pump.




4. Connect the SSTs (NGS tester) to the DLC-2.

NOTE:
- The following conditions cancel the ON BOARD DEVICE CONTROL function:
1. Ten minutes after the TRIGGER on the NGS tester is depressed.
2. When engine is started.
3. If the pressure in the EVAP control system exceeds 6.43 kPa {48.26 mmHg, 1.9 inHg}.

- Therefore, the following tests, Step 5 through 10, should be conducted under the following conditions.
1. Within 10 minutes after TRIGGER on the NGS tester is depressed.
2. Ignition key is at ON (Engine OFF), but engine is not started.




5. Select the ON BOARD DEVICE CONTROL of the GENERIC OBD - II FUNCTIONS and press TRIGGER.
6. Press CANCEL two times.
7. Select the PID/DATA MONITOR AND RECORD function on the NGS display.
8. Select the FTP PID.




9. Press the START to view PID.




10. Apply 1.7 kPa {13 mmHg, 0.5 inHg} vacuum.
Vacuum should hold at the specified readings for a minimum of 2 minutes.
- If the vacuum does not hold, inspect the following.
- FTP sensor
- Purge solenoid valve
- Catch tank for plugging, damages and pinhole using vacuum pump
- Charcoal canister for damage and pinhole
- CDCV for damage and leakage
- Detached, incorrectly installed or cracked hose from purge solenoid valve to catch tank
- Detached, incorrectly installed or cracked hose from catch tank to charcoal canister
- Detached, incorrectly installed or cracked hose from charcoal canister to fuel tank pressure sensor
- Detached, incorrectly installed or cracked hose from charcoal canister to CDCV
- If the FTP PID value holds, carry out the "Inspection from charcoal canister to fuel tank".

Inspection from charcoal canister to fuel tank
1. Inspect for loose and wrongly connected hoses between the charcoal canister and the fuel tank.
2. Disconnect catch tank side of the vacuum hose at the charcoal canister.




3. Insert hose on the vacuum pump.




4. Connect the SSTs (NGS tester) to the DLC-2.

NOTE:
- The following conditions cancel the ON BOARD DEVICE CONTROL function:
1. Ten minutes after the TRIGGER on the NGS tester is depressed.
2. When engine is started.
3. If the pressure in the EVAP control system exceeds 6.43 kPa {48.26 mmHg, 1.9 inHg}.

- Therefore, the following tests, Step 5 through 10, should be conducted under the following conditions.
1. Within 10 minutes after TRIGGER on the NGS tester is depressed.
2. Ignition key is at ON (Engine OFF), but engine is not started.




5. Select the ON BOARD DEVICE CONTROL of the GENERIC OBD - II FUNCTIONS and press




6. Press CANCEL two times.
7. Select the PID/DATA MONITOR AND RECORD function on the NGS display.
8. Select the FTP PID.
9. Press the START to view PID.




10. Apply 1.7 kPa {13 mmHg, 0.5 inHg} vacuum.
Vacuum should hold at the specified readings for a minimum of 2 minutes.
- If the FTP PID value does not hold, inspect the following:
- Fuel-filler cap for loose or damage
- Filler-pipe component for leakage
- Fuel tank for damage, insufficient sealing or poorly attached accessories on fuel tank, such as fuel gauge
- Detached, incorrectly installed or cracked hose from charcoal canister to fuel tank
- Detached, incorrectly installed or cracked hose from charcoal canister to vent cut valve
- Detached, incorrectly installed or cracked hose from vent cut valve to fuel tank