Main components
| Main components | 
| 1. | Control module, ACC unit (216) | |
| 2. | Cabin temperature sensor (218) | |
| 3. | Mixed-air temperature sensor, LH (217LH) | |
| 4. | Mixed-air temperature sensor, RH (217RH) | |
| 5. | Solar sensor (223) | |
| 6. | Stepping motor, air distribution (221a) | |
| 7. | Stepping motor, mixed-air, LH (222LH) | |
| 8. | Stepping motor, mixed-air, RH (222RH) | |
| 9. | Ventilation fan control (220) | |
| 10. | Air recirculation motor (38) | |
| 11. | Heat exchanger shut-off valve (581) | |
| 12. | Circulation pump (453) (certain engine versions only) | |

 
     
		