Faulty Signal. Permanent Fault

Faulty signal. Permanent fault

EFI-225 Air conditioning (A/C) pressure sensor, signal

Checking the air conditioning (A/C) system
Check according to service information.

Is the air conditioning (A/C) system OK?

Yes - Replacing component

No - Fault-tracing information

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Replacing component
- Try a new air conditioning (A/C) pressure sensor.





Continue - Verification

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Fault-tracing information
- Remedy according to service information.

Continue - Verification

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Verification




Verification

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












- Ignition off.
- Air conditioning (A/C) pressure sensor and engine control module (ECM) connected.
- Start the engine and idle it.
- Air conditioning (A/C) switch on.
- Blower fan on.
- Wait until the air conditioning (A/C) compressor has started.








- Select Volvo Scan Tool (ST) to read off diagnostic trouble codes (DTCs).

If EFI-225 is stored it should have intermittent status.

OK - VERIFIED

Not OK - 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 - Exit fault-tracing

No - Attempt New Test

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Attempt New Test - Checking the air conditioning (A/C) system

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