V40 L4-1.9L Turbo VIN 29 B4204T3 (2002)
Substitute value
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None.
Possible source
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Contact resistance or oxidation in the connectors
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Open-circuit, short-circuit to ground or short-circuit to voltage in the signal cable between the audio unit and the combined instrument panel
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Faulty signal from the combined instrument panel.
Fault symptom[s]
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The car's position on the map is incorrect
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The RTI system is not working.
Checking The Speed Signal, Audio HU1205
Checking the speed signal, Audio HU1205
Checking the speed signal
Activate the diagnostic menu. See Diagnostic functions Audio HU1205 (audio module) See: Description and Operation/Diagnostic Functions Audio
HU1205 (Audio Module).
Read off the vehicle speed signal from the combined instrument panel according to 2.1 Circuit check (parameter a). See Diagnostic functions Audio
HU1205 (audio module) See: Description and Operation/Diagnostic Functions Audio HU1205 (Audio Module).
Test drive the car. Check that the value of the vehicle speed signal increases and decreases with speed.
