On-Board Diagnostic System Description

On-Board Diagnostic System Description

NOTE: The diagnostic information as diagnostic trouble code (DTC) can be known by using SUZUKI scan tool. For further details, refer to DTC Check:Auto A/C. DTC Check

HVAC control module detects malfunctions, which may occur in the following area.
- Inside air temperature sensor
- Evaporator temperature sensor
- Sunload sensor
- Temperature control actuator
- Air flow control actuator
- Backup power supply circuit of HVAC control module
- A/C refrigerant pressure
- Serial communication line between BCM and HVAC control module
- Received data from BCM as follows
- Outside air temperature sensor signal
- ECT sensor signal
- A/C refrigerant pressure sensor signal
- VSS signal
- Engine type signal
- Combination meter spec signal
- CAN communication circuit failure signal

When HVAC control module detects malfunction, the "AUTO" on LCD (1) flashes to warn and the diagnostic trouble code (DTC) is stored in the memory of the module. When diagnosing trouble, the DTC can be checked according to DTC Check:Auto A/C. DTC Check