HVAC Control Module
- Push engine switch to change ignition mode to "OFF".
- Connect connector to HVAC control module.
- Push engine switch to change ignition mode to "ON".
- Select "Communication Bus Check" under "Bus Check" menu of SUZUKI scan tool.
- Confirm the CAN communication that control modules, sensors and HVAC control module have been already connected on is in normal condition, see JUDGMENT OF COMMUNICATION BUS CHECK .
- If any malfunction is found, substitute a known-good HVAC control module and recheck DTC, see HVAC CONTROL MODULE REMOVAL AND INSTALLATION .