Signal Too High. Permanent Fault

Signal too high. Permanent fault

Checking wiring and components
Check EVAP canister shut-off valve resistance.
Check signal cable between control module #B40 (#B50) and EVAP canister shut-off valve terminal 2 for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.

Hint: Use an electrician's screwdriver with at least a 3 W bulb to determine whether the cable is short-circuited to supply voltage.

Remedy as necessary.

Other information
- Connecting the breakout box/accessing the control module, see Connecting the breakout box, B5234T9, B5244T7 Connecting The Breakout Box.
- To access/replace the EVAP canister shut-off valve see.
- For resistance values, see Component specifications Specifications.
- For information about signals, see Signal specification Signal Specifications.














Continue - Verification

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Verification




Verification

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








- Ignition off.
- Reconnect connectors, reinstall components.
- Ignition on.
- Activate EVAP canister shut-off valve.
A "click" should be heard when the EVAP canister shut-off valve is activated.









Is the EVAP canister shut-off valve working?

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 wiring and components

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