OVERVIEW
Some vehicles may be fitted with a 4 zone climate control system. In this case, the main 2 zone climate control system is supplemented by a rear 2 zone system. Vehicles fitted with 4 zone climate control can be identified by a third rotary control located on the rear of the floor console.
The rear climate control system is controlled by a module located beneath the front passenger seat and operates independently of the main climate control system.
The rear climate control system will only operate if the main climate control system is operational. Consequently the only communication between the front and rear systems is confirmation to the rear climate control system that the main climate control system is operational.
Refrigerant pipes run from the main climate control system to an evaporator located in the rear of the floor console. A magnetic valve is located in the feed pipe to stop the flow of refrigerant to the evaporator if the request for cold, de-humidified air is removed.
PRINCIPLES OF OPERATION
Refer to HEATING AND VENTILATION and AIR CONDITIONING and CONTROL COMPONENTS .
Scheme 55
- Remove the rear passenger entertainment control panel assembly. Refer to REAR PASSENGER ENTERTAINMENT CONTROL PANEL .
- Remove the rear auxiliary climate control assembly. Remove the 4 screws. Disconnect the 2 electrical connectors.