Air Conditioning Isolation Valves

WARNING: This page is about a different car, the 2021 Jaguar I-Pace, 2020 Jaguar I-Pace, and 2019 Jaguar I-Pace. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: Do not substitute Air Conditioning (A/C) isolation valves between positions in the A/C system, as they will not function correctly.

Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC

ITEM	DESCRIPTION
1	Air Conditioning (A/C) isolation valve SOV2
2	A/C isolation valve SOV5
3	A/C isolation valve EXV2
4	A/C isolation valve SOV4
5	A/C isolation valve SOV1

The 5 Air Conditioning (A/C) isolation valves are connected with valve blocks. The electric valves are responsible for the distribution of refrigerant in the A/C system, dependent on heat flow requirements.

The operation of the 5 A/C isolation valves is controlled by the HVAC control module through Local Interconnect Network (LIN) signals.

The A/C isolation valves have labels and are individual electronically coded to a specific location in the A/C system.

When the recovery heat exchanger operates as an evaporator, the A/C isolation valve EXV2 acts like a Thermostatic Expansion Valve (TXV). The HVAC controls the opening of the A/C isolation valve EXV2 to adjust the refrigerant flow. This controls the heat collected from the outside air by the recovery heat exchanger.

The A/C isolation valves are hardwired to the HVAC. The A/C isolation valves have a 4-pin connector for the wiring harness connector with the following electrical connections:

Power supply from the HVAC.
LIN signal from the HVAC.
A ground connection.