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Old 05-21-2020, 06:41 AM   #1
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Join Date: Aug 2019
Location: Essex
Posts: 42
A quick test is at the trinary switch see if there is power there. It has 4 wires.
One low pressure /high pressure /12v live and power out to ac clutch.
With switch on and engine running see if you have 12v at trinary if yes then as stated pressure is to high/low if no work backwards
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