On-Board Diagnostic System Description (LCD Model) - Air Conditioning System

On-Board Diagnostic System Description (LCD model)

HVAC control module detects malfunction, which may occur in the following area.
- Outside temperature sensor
- Inside temperature sensor
- Sunload sensor (short circuit)
- Wheel speed sensor
- CKP sensor
- CAN communication line
- Serial communication line
- A/C evaporator temperature sensor
- ECT sensor
- Refrigerant pressure sensor
- Temperature control actuator
- Air flow control actuator
- Air intake control actuator

When HVAC control module detects malfunction, the "AUTO" display (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.