Communication Problems

Communication problems

Checking the function




- Ignition on.
- Activate the buttons and check that status is updated.
If the status changes, this is an indication that the fault was present previously but is not active at the moment, i.e. an intermittent fault.









Continue - Checking the component

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Checking the component




- Ignition off.
Check cables and connections for contact resistance, oxidation and open circuit.
If no fault is found, replace the control unit (keypad).
If the fault recurs, replace the control module.

Other information:





Continue - Verification

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Verification




- Ignition off.
- Reconnect the connectors, reinstall components etc.
- Ignition on.
- Activate the buttons and check that status is updated.









Was the function OK?

Yes - FAULT FOUND

No - Fault-tracing information

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Fault-tracing information

Attempt New Test - Checking the function

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