Symptom | Check item | Reference
A/C system does not activate. | Power supply and ground circuit | Diagnosis Procedure
A/C system cannot be controlled. | A/C auto amp. | Diagnosis Procedure

- Air outlet does not change.
- Mode door motor does not operate normally.

Mode door motor
DTC Logic

- Discharge air temperature of driver side does not change.
- The air mix door motor of driver side does not operate normally.

Air mix door motor (driver side)
DTC Logic

- Discharge air temperature of passenger side does not change.
- The air mix door motor of passenger side does not operate normally.

Air mix door motor (passenger side)
DTC Logic

- Intake door does not change.
- Intake door motor does not operate normally.

Intake door motor
DTC Logic
Blower motor operation is malfunctioning. | Blower motor | Diagnosis Procedure
Magnet clutch does not operate. | Magnet clutch | Diagnosis Procedure

- Insufficient cooling
- No cool air comes out. (Air flow volume is normal.)

ECV
Diagnosis Procedure
Insufficient cooling | Diagnosis Procedure

- Insufficient heating
- No warm air comes out. (Air flow volume is normal.)

Insufficient heating
Diagnosis Procedure

- Noise
- Noise is heard when the A/C system operates.

Noise
Diagnosis Procedure

- Memory function does not operate normally.
- The setting is not maintained. (It returns to the initial condition)

Memory function
Diagnosis Procedure