Solenoid valve, heat exchanger shut-off valve
| Solenoid valve, heat exchanger shut-off valve |
On cars fitted with A/C, the climate system is equipped with a vacuum controlled shut-off valve for the heat exchanger. This is used when it is necessary to prevent coolant circulating in the heat exchanger so that maximum cooling efficiency can be achieved. The control module controls a solenoid valve which in turn manoeuvres the shut-off valve. The solenoid valve is supplied from +54 circuit via fuse 31 and is controlled on the ground side from pin 24 on the MCC unit. When the control module grounds the output, the solenoid valve opens and creates a vacuum on the shut-off valve, which in turn stops the flow of coolant. The control module closes the shut-off valve if both the temperature knobs are set to maximum cold.
Diagnostics
There is no diagnostics for this function.This project is supported by memberships and donations. If you use this site, please consider Joining SCNA and/or making a donation.
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