Leakage
Leakage
Fault-tracing information
By activating the leak diagnostic the status (permanent/intermittent) of the fault can be determined. The fault is intermittent if this diagnostic trouble code (DTC) is detected without any fault being found when the leak diagnostic is run.
If the size of the leak is unknown (qualifier unknown) when reading off diagnostic trouble codes (DTCs) the size of the leak can be determined in the tank system quick test if the fault is permanent.
Continue - Other diagnostic trouble codes (DTCs)
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Other diagnostic trouble codes (DTCs)
Note! Any other diagnostic trouble codes (DTCs) in EMS2000 must be remedied and erased before this fault-tracing can be carried out.
Are any other diagnostic trouble codes (DTCs) stored?
Yes - Other diagnostic trouble codes (DTCs), continued
No - Activating the leak diagnostic
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Other diagnostic trouble codes (DTCs), continued
Have these diagnostic trouble codes (DTCs) been remedied?
Yes - Erasing diagnostic trouble code (DTC)
No - DONE
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Erasing diagnostic trouble code (DTC)
- Ignition on
- Erase diagnostic trouble codes (DTCs).
Continue - Activating the leak diagnostic
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Activating the leak diagnostic
Hint: If the test does not launch, this could be because the evaporative emission system (EVAP) control has not been active above a certain level. The control must change the level between each quick test carried out. The level is reached by allowing the engine to idle for approximately 5 minutes.
- Start the engine. Allow the engine to idle.
Note! The engine must be idling throughout the test.
- Clicking the VCT2000 symbol to activate the leak diagnostic
- Wait until the engine coolant temperature (ECT) exceeds 60 °C
- Start the leak diagnostic. YES is displayed during leak diagnostics
- Wait until the leak diagnostic is complete. Leak diagnostic active NO and leak diagnostic complete YES is displayed when the leak diagnostic is complete.
Hint: The time taken for the diagnostic varies depending on the fault status of the fuel tank system. The diagnostic process may take up to 4 minutes.
- Read off the results of the leak diagnostic. The leak diagnostic results are read off automatically when the test has been correctly completed
- The OK status will be displayed if the control module has not detected any faults. The Not OK status, numbered 1-8 will be displayed if the control module detects any faults
Note! The status types can be translated into diagnostic trouble codes (DTCs). However they are not stored as DTCs during this test.
Status definitions:
- OK = The system is free of faults
- Not OK, status 1 = Leak diagnostic pump, signal too low. (ECM-65, signal too low)
- Not OK, status 2 = Leak diagnostic pump, signal too high. (ECM-65, signal too high)
- Not OK, status 3 = Leak diagnostic pump, faulty signal. (ECM-65, faulty signal)
- Not OK, status 4 = Leak diagnostic pump, blocked hose. (ECM-66, signal too low)
- Not OK, status 5 = Leakage 0.5 mm. (ECM-68, minor leak)
- Not OK, status 6 = Leakage 1 mm. (ECM-68, major leak)
- Not OK, status 7 = Leakage larger than 1 mm. (ECM-68, Fuel tank filler cap missing)
- Not OK, status 8 = Evaporative emission (EVAP) system blocked. (ECM-6A, signal too low).
Select a suitable alternative to continue:
1. Status OK
2. Status Not OK, status 5, 6 or 7 detected
3. Status Not OK, another diagnostic trouble code (DTC) has been detected.
1 - Intermittent fault
2 - Checking components
3 - Fault-tracing information:
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Checking components
- Ignition off.
- Check that the fuel tank filler cap is properly tightened and that its seal is intact
- Check the hoses and terminals on the leak diagnostic pump and fuel filler pipe for leakage and damage
- Remedy as necessary.
Continue - Activating the leak diagnostic
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Activating the leak diagnostic
Hint: If the test does not launch, this could be because the evaporative emission system (EVAP) control has not been active above a certain level. The control must change the level between each quick test carried out. The level is reached by allowing the engine to idle for approximately 5 minutes.
- Start the engine. Allow the engine to idle.
Note! The engine must be idling throughout the test.
- Clicking the VCT2000 symbol to activate the leak diagnostic
- Wait until the engine coolant temperature (ECT) exceeds 60 °C
- Start the leak diagnostic. YES is displayed during leak diagnostics
- Wait until the leak diagnostic is complete. Leak diagnostic active NO and leak diagnostic complete YES is displayed when the leak diagnostic is complete.
Hint: The time taken for the diagnostic varies depending on the fault status of the fuel tank system. The diagnostic process may take up to 4 minutes.
- Read off the results of the leak diagnostic. The leak diagnostic results are read off automatically when the test has been correctly completed
- The OK status will be displayed if the control module does not detect any faults. The Not OK status, numbered 1-8 will be displayed if the control module detects any faults
Note! The status types can be translated into diagnostic trouble codes (DTCs). However they are not stored as DTCs during this test.
Status definitions:
- OK = The system is free of faults
- Not OK, status 1 = Leak diagnostic pump, signal too low. (ECM-65, signal too low)
- Not OK, status 2 = Leak diagnostic pump, signal too high. (ECM-65, signal too high)
- Not OK, status 3 = Leak diagnostic pump, faulty signal. (ECM-65, faulty signal)
- Not OK, status 4 = Leak diagnostic pump, blocked hose. (ECM-66, signal too low)
- Not OK, status 5 = Leakage 0.5 mm. (ECM-68, minor leak)
- Not OK, status 6 = Leakage 1 mm. (ECM-68, major leak)
- Not OK, status 7 = Leakage larger than 1 mm. (ECM-68, Fuel tank filler cap missing)
- Not OK, status 8 = Evaporative emission (EVAP) system blocked. (ECM-6A, signal too low).
Select a suitable alternative to continue:
1. Status OK
2. Status Not OK, status 5, 6 or 7 detected
3. Status Not OK, another diagnostic trouble code (DTC) has been detected.
1 - FAULT FOUND
2 - Checking the component
3 - Fault-tracing information:
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Checking the component
- Ignition off
- Expose the canister purge (CP) valve.
- Remove the hose between the canister purge (CP) valve and the intake manifold
- Connect a vacuum pump to the canister purge (CP) valve instead
- Pump up a vacuum. Check that the vacuum does not drop
- If the vacuum drops, there is a leak through the canister purge (CP) valve
- Remedy as necessary.
Was a fault detected?
Yes - Verification
No - Checking the fuel tank system
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Checking the fuel tank system
- The fault may be due to leakage in the fuel tank, fuel filler pipe, fuel tank filler cap, EVAP canister, leak diagnostic pump or in the hoses between these components
- Check the fuel tank system and the evaporative emission (EVAP) system for leaks. See Pressurizing the fuel tank system, check Testing and Inspection.
Continue - Activating the leak diagnostic
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Activating the leak diagnostic
Hint: If the test does not launch, this could be because the evaporative emission system (EVAP) control has not been active above a certain level. The control must change the level between each quick test carried out. The level is reached by allowing the engine to idle for approximately 5 minutes.
- Start the engine. Allow the engine to idle.
Note! The engine must be idling throughout the test.
- Clicking the VCT2000 symbol to activate the leak diagnostic
- Wait until the engine coolant temperature (ECT) exceeds 60 °C
- Start the leak diagnostic. YES is displayed during leak diagnostics
- Wait until the leak diagnostic is complete. Leak diagnostic active NO and leak diagnostic complete YES is displayed when the leak diagnostic is complete.
Hint: The time taken for the diagnostic varies depending on the fault status of the fuel tank system. The diagnostic process may take up to 4 minutes.
- Read off the results of the leak diagnostic. The leak diagnostic results are read off automatically when the test has been correctly completed
- The OK status will be displayed if the control module does not detect any faults. The Not OK status, numbered 1-8 will be displayed if the control module detects any faults
Note! The status types can be translated into diagnostic trouble codes (DTCs). However they are not stored as DTCs during this test.
Status definitions:
- OK = The system is free of faults
- Not OK, status 1 = Leak diagnostic pump, signal too low. (ECM-65, signal too low)
- Not OK, status 2 = Leak diagnostic pump, signal too high. (ECM-65, signal too high)
- Not OK, status 3 = Leak diagnostic pump, faulty signal. (ECM-65, faulty signal)
- Not OK, status 4 = Leak diagnostic pump, blocked hose. (ECM-66, signal too low)
- Not OK, status 5 = Leakage 0.5 mm. (ECM-68, minor leak)
- Not OK, status 6 = Leakage 1 mm. (ECM-68, major leak)
- Not OK, status 7 = Leakage larger than 1 mm. (ECM-68, Fuel tank filler cap missing)
- Not OK, status 8 = Evaporative emission (EVAP) system blocked. (ECM-6A, signal too low).
Select a suitable alternative to continue:
1. Status OK
2. Status Not OK, status 5, 6 or 7 detected
3. Status Not OK, another diagnostic trouble code (DTC) has been detected.
1 - FAULT FOUND
2 - Replacing the component
3 - Fault-tracing information:
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Replacing the component
- Ignition off.
- Try a new leak diagnostic pump. See Replacing the leak diagnostic pump Service and Repair.
Continue - Verification
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Fault-tracing information:
- The control module has detected a fault other than the one that affects the relevant diagnostic trouble code (DTC). This may be because a fault occurred during the fault-tracing. Check that the hoses, connectors and components etc have been correctly reinstalled. Check that they are not damaged.
Continue - DONE
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Intermittent fault
The control module has previously detected a leak in the tank system but the fault is no longer active. The fault may be due to leakage in the fuel tank, fuel filler pipe, fuel tank filler cap, EVAP canister, Canister purge (CP) valve, leak diagnostic pump or in the hoses between these components.
Hint: This DTC can be stored if the car is driven without the fuel tank filler cap or if the fuel tank filler cap is incorrectly tightened.
Other information:
- To check the fuel tank system and the evaporative emission (EVAP) system for leaks, see Pressurizing the fuel tank system, check Testing and Inspection
- To replace the canister purge (CP) valve, see Replacing the canister purge (CP) valve Service and Repair
- To replace the leak diagnostic pump, see Replacing the leak diagnostic pump Service and Repair.
Continue - info2
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Verification
Verification
Hint: After carrying out the repair, check that the fault has been remedied.
Note! This test cannot be performed if there are diagnostic trouble codes (DTCs) stored in EMS2000.
- Reinstall the components, reconnect the connectors etc.
- Ignition on
- Check that no other diagnostic trouble codes (DTCs) are stored. If other diagnostic trouble codes (DTCs) are stored, these must be remedied and erased first.
Are any other diagnostic trouble codes (DTCs) stored?
Yes - Fault-tracing information:
No - Activating the leak diagnostic
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Activating the leak diagnostic
Hint: If the test does not launch, this could be because the evaporative emission system (EVAP) control has not been active above a certain level. The control must change the level between each quick test carried out. The level is reached by allowing the engine to idle for approximately 5 minutes.
- Start the engine. Allow the engine to idle.
Note! The engine must be idling throughout the test.
- Clicking the VCT2000 symbol to activate the leak diagnostic
- Wait until the engine coolant temperature (ECT) exceeds 60 °C
- Start the leak diagnostic. YES is displayed during leak diagnostics
- Wait until the leak diagnostic is complete. Leak diagnostic active NO and leak diagnostic complete YES is displayed when the leak diagnostic is complete.
Hint: The time taken for the diagnostic varies depending on the fault status of the fuel tank system. The diagnostic process may take up to 4 minutes.
- Read off the results of the leak diagnostic. The leak diagnostic results are read off automatically when the test has been correctly completed
- The OK status will be displayed if the control module has not detected any faults. The Not OK status, and a number from 1-8 will be displayed if the control module has detected any faults. To interpret these faults, see the status definitions below.
Note! The status types can be translated into diagnostic trouble codes (DTCs). However they are not stored as DTCs during this test.
- Click the stop button to re-run the test.
Status definitions:
- OK = The system is free of faults
- Not OK, status 1 = Leak diagnostic pump, signal too low. (ECM-65, signal too low)
- Not OK, status 2 = Leak diagnostic pump, signal too high. (ECM-65, signal too high)
- Not OK, status 3 = Leak diagnostic pump, faulty signal. (ECM-65, faulty signal)
- Not OK, status 4 = Leak diagnostic pump, blocked hose. (ECM-66, signal too low)
- Not OK, status 5 = Leakage 0.5 mm. (ECM-68, minor leak)
- Not OK, status 6 = Leakage 1 mm. (ECM-68, major leak)
- Not OK, status 7 = Leakage larger than 1 mm. (ECM-68, Fuel tank filler cap missing)
- Not OK, status 8 = Evaporative emission (EVAP) system blocked. (ECM-6A, signal too low).
Select a suitable alternative to continue:
1. The status is OK
2. Status Not OK (for the current diagnostic trouble code (DTC)) has been detected
3. Status Not OK, (for another diagnostic trouble code (DTC)) has been detected.
1 - VERIFIED
2 - VERIFICATION FAILED
3 - Fault-tracing information:
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Fault-tracing information:
- The control module has detected a fault other than the one that affects the relevant diagnostic trouble code (DTC). This may be because a fault occurred during the fault-tracing. Check that the hoses, connectors and components etc have been correctly reinstalled. Check that they are not damaged.
Continue - VERIFIED
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Fault-tracing information:
- This diagnostic trouble code (DTC) cannot be verified before other DTCs have been remedied and erased
- Fault-trace, remedy and erase other diagnostic trouble codes (DTCs) first. Then select this diagnostic trouble code (DTC) to perform verification.
Continue - VERIFICATION FAILED
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VERIFIED - FAULT FOUND
VERIFICATION FAILED - Fault-tracing information
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Fault-tracing information
Information
Fault-tracing information
If the fault is intermittent, do not verify fault-tracing if the fault does not recur.
It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).
Do you want to view the information again?
Yes - Attempt New Test
No - FAULT FOUND
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Attempt New Test - Fault-tracing information
FAULT FOUND - DONE
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Fault-tracing information
Information
Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.
Do you want to exit fault-tracing?
Yes - Exit fault-tracing
No - Attempt New Test
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Attempt New Test - Other diagnostic trouble codes (DTCs)
FAULT-TRACING FAILED - No Fault Found
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