Signal Too High
Signal too high
Checking for intermittent faults
- Ignition on
- Activate the evaporative emission system (EVAP) valve.
A click should be heard when the evaporative emission system (EVAP) valve is activated.
Is the evaporative emission system (EVAP) valve working?
Yes - Fault-tracing information
No - Checking the connector
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Checking the connector
- Ignition off
- Check the evaporative emission system (EVAP) valve connector. Check for contact resistance and oxidation
- Reinstall components, reconnect connectors etc.
- Ignition on
- Activate the evaporative emission system (EVAP) valve.
Check for a click from the canister purge (CP) valve.
If the canister purge (CP) valve now functions, the cause of the fault was loose connections in the connector.
Other information
- Checking wiring and terminals Checking Wiring And Terminals
Is the evaporative emission system (EVAP) valve working?
Yes - Fault Found
No - Checking the wiring and component
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Checking the wiring and component
Check the cable between control module terminal #B40 and canister purge (CP) valve terminal 2. Check for an open-circuit. Check for a short-circuit to supply voltage.
Check the cable between canister purge (CP) valve terminal 1 and system relay terminal 3. Check for an open-circuit.
Remedy as necessary.
Other information
- Connecting the breakout box Connecting the Breakout Box
- Signal specification Signal Description / Specification
- Engine control module (ECM), replacing Service and Repair
- Replacing the shut-off valve for the carbon filter container Service and Repair
- Checking wiring and terminals Checking Wiring And Terminals
Was a fault found in the wiring?
Yes - Verification
No - Replacing the component
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Replacing the component
- Ignition off.
Try a new EVAP canister shut-off valve.
Other information
- Replacing the shut-off valve for the carbon filter container Service and Repair
Continue - Verification
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Fault-tracing information
The control module has previously registered a fault. The fault is now no longer present.
Continue - 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 - Checking for intermittent faults
FAULT FOUND - DONE
DONE - DONE
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Verification
Verification
Verification
Hint: After carrying out the repair, check that the fault has been remedied.
- Ignition off
- Reconnect the connectors, reinstall components etc.
- Ignition on
- Activate the evaporative emission system (EVAP) valve.
A click should be heard when the evaporative emission system (EVAP) valve is activated.
Is the evaporative emission system (EVAP) valve working?
Yes - VERIFIED
No - 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
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 - FAULT-TRACING FAILED
No - Attempt New Test
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FAULT-TRACING FAILED - FAULT-TRACING FAILED
Attempt New Test - Checking for intermittent faults
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