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Re: High pressure on LOW SIDE
Posted to HVAC Forum on 10/5/2020 2 Replies

A trinary switch has 4 wires, a sensor has 3. By 2010 probably all passenger vehicles use a sensor. When you command high speed fan with your scanner you are ignoring the sensor input. The IDPM has 3 internal cooling fan relays that are not replaceable but whe... Login to read more.

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