Operation CHARM: Car repair manuals for everyone.

Signal Too High. Permanent Fault






Signal too high. Permanent fault

Checking components and wiring
Check the resistance of the evaporative emission system (EVAP) valve.
Check the signal cable between control module terminal #A9 (#A9) and evaporative emission system (EVAP) valve terminal 2. Check for a short-circuit to supply voltage.

Hint: Use a test lamp with at least a 3 W bulb to determine whether the cable is short-circuited to supply voltage.

Remedy as necessary.

Other information:
- To connect the breakout box / access the control module, see Connecting the breakout box, B5254T2 Connecting the Test Box
- For the location of components on 5 cylinder engines, see Location of components Locations
- For the location of components on 6 cylinder normally aspirated engines, see Location of components Locations
- For the location of components on 6 cylinder turbocharged engines, see Location of components Locations
- For resistance values, see Component specifications Specifications
- For information about signals on 5 cylinder engines, see Signal specification Signal Specification
- For information about signals on 6 cylinder engines, see Signal specification Signal Specification
- Checking wiring and terminals Checking Wiring And Terminals.













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 canister purge (CP) valve.
A "click" should be heard when the canister purge (CP) valve is activated.









Is the canister purge (CP) valve working?

Yes - Verification completed

No - 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 components and wiring

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