Signal Missing. Permanent Fault

Signal missing. Permanent fault

Checking the terminal








- Ignition off
- Disconnect the canister purge (CP) valve connector.
Check the canister purge (CP) valve connector. Check for contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary.





Were any faults found?

Yes - Verification

No - Checking the canister purge (CP) valve

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Checking the canister purge (CP) valve








- Canister purge (CP) valve connector disconnected
- Ignition on.
Connect an ohmmeter between canister purge (CP) valve connector terminals #1 and #2.









The ohmmeter should read approximately 21 ohms at +20°C.

OK - Checking the power supply

Not OK - Defective canister purge (CP) valve

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Checking the power supply




- Ignition off.
Connect a voltmeter between the canister purge (CP) valve connector terminal #1 (control module side) and ground.









The voltmeter must display battery voltage for 2 seconds immediately after the ignition is switched on.

OK - Checking the signal cable

Not OK - Checking the power cable

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Checking the signal cable
Check the cable between canister purge (CP) valve terminal #1 and engine control module (ECM) connector terminal #4. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary.













Continue - Verification

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Defective canister purge (CP) valve
Try a new canister purge (CP) valve according to Replacing the canister purge (CP) valve Service and Repair.

Continue - Verification

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Checking the power cable
Check the cable between canister purge (CP) valve terminal #2 and system relay base 2/14 terminal #5. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary.













Continue - Verification

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Verification




- Reconnect the connectors, reinstall components etc.
Activate the canister purge (CP) valve according to Description of activations Description Of Activations.





Does the canister purge (CP) valve click?

Yes - FAULT FOUND

No - No Fault Found Fault-tracing information

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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 the terminal

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