Faulty Signal. Permanent Fault

Checking The A/C System
- Is A/C system OK?

Yes:
^ Try a new A/C pressure sensor. Then continue with UE2.

No:
^ Remedy other Climate Control problems before continuing.
^ Then proceed to Verification section below.





Verification
- After carrying out the repair, check that the fault has been remedied as follows.
- Ignition off.
- A/C pressure sensor and engine control module (ECM) connected.
- Start the engine and idle it.
- A/C switch on.
- Blower fan on.
- Wait until the A/C compressor has started.
- Read off diagnostic trouble codes (DTCs).
- If EFI-225 is stored it should have the status intermittent fault.

If reading is OK:
^ Fault corrected.

If reading is incorrect:
^ Proceed to test step below.

Fault-tracing Information
The verification result shows that the fault persists.

- Do you want to exit fault-tracing?

Yes:
^ Fault not corrected.

No:
^ Return to Checking The A/C System section above.