Leakage. Permanent Fault

Leakage. Permanent fault

Checking vacuum downstream of the canister purge (CP) valve
- Disconnect hose between canister purge (CP) valve and EVAP canister from the canister purge (CP) valve.
- Start the engine and let it idle
Read off canister purge (CP) valve pulse signal.
There should not be vacuum in the canister purge (CP) valve when the pulse signal is 0%.

Other information
- Location of components see Location of components, only B52X4 T Locations.
- To access/replace the canister purge (CP) valve, see Replacing the canister purge (CP) valve Service and Repair.













Is the canister purge (CP) valve OK?

Yes - Intermittent fault

No - Verification

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Intermittent fault





Leakage. Intermittent fault

Checking canister purge (CP) valve
Check canister purge (CP) valve for dirt, deposits and damage.
Activate the canister purge (CP) valve to see that no malfunction has occurred.
Check that the canister purge (CP) valve is not sticking when it has been activated.










Continue -

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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 FOUND - DONE

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Verification




Verification

Hint: After carrying out the repair, check that the fault has been remedied.




- Start the engine.
- Activate the quick fuel tank system test.





Is the value OK?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFICATION FAILED - Fault-tracing information

VERIFIED - FAULT FOUND

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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 - Checking vacuum downstream of the canister purge (CP) valve

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