Leakage - Permanent Fault

EFI-4008 CANISTER PURGE (CP) VALVE LEAKAGE
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 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, Locations
- To access/replace the canister purge (CP) valve, Canister Purge (CP) Valve, Replacing

Is the canister purge (CP) valve OK?
Yes - Continue below.
No - Skip to "Verification"


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.


Fault-tracing information
If the fault is intermittent, do not verify fault-tracing if the fault does not recur.


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 - Testing Complete.
No - Continue below.


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.