Heating and Air Conditioning: Testing and Inspection
Heating and Ventilation Faults
This section covers mechanical, fuse and possible flap servo motor faults that could occur in the heating and ventilation system.
Visual checks of components within the system and relevant fuses should be carried out before undertaking detailed fault diagnosis procedures on Testbook.
Symptom List
NOTE: Should any fault occur in the heating and ventilation system on vehicles fitted with air conditioning a 'book' and '!' symbol will be displayed on the switch control panel.