Faulty Signal

Faulty signal

Checking the refrigerant
Check the level of the refrigerant and that there are no leaks in the climate control system.
Remedy as necessary.

Note! Always disconnect the battery lead when working on the climate control system. See Battery, replacing Battery, Replacing.

Other information
- For visual and physical checks, see Visual and physical check Visual and Physical Check
- To fill with refrigerant, see Refrigerant, filling Refrigerant, Filling
- For vacuum pumping, see
- To leak trace using an electronic leak tracer, see Leak tracing, electronic leak tracer Leak Tracing, Electronic Leak Tracer
- To leak trace using fluorescent tracing agent and an UV flashlight, see Leak tracing, fluorescent tracing agent / UV lamp Leak Tracing, Fluorescent Tracing Agent / UV Lamp
- To fill with fluorescent tracing agent, see Filling with fluorescent tracing agent with the refrigerant Filling With Fluorescent Tracing Agent With the Refrigerant.

Was a fault detected?

Yes - Verification

No - No Fault Found

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Verification

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








- Ignition off.

Note! Wait at least 1 minute before "Ignition on". This is to allow the climate control module (CCM) to carry out a new diagnostic.

- Reinstall the connectors, components etc.
- Ignition on
- Read off diagnostic trouble codes (DTCs).
The fault is no longer present if the status of the diagnostic trouble code (DTC) has changed to intermittent.





Does the status change?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFIED - Fault Found

VERIFICATION FAILED - Information

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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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Attempt New Test - Checking the refrigerant

FAULT-TRACING FAILED - No Fault Found

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