What is this switch and how to remove it
#181
The 3 wire radiator temp switch and the 2 wire freon pressure switch can be look at as sperate independent triggers
with the 3 wire temp switch disconnected the jumper wire on the 2 wire freon pressure switch you will independently get low fan mode with key in run position
The 4 wire freon pressure switch which you can test jumper you will get high fan mode between wire White / Blue and Black ( there are 2 black wires to ground and either one makes no difference )
with the 3 wire temp switch disconnected the jumper wire on the 2 wire freon pressure switch you will independently get low fan mode with key in run position
The 4 wire freon pressure switch which you can test jumper you will get high fan mode between wire White / Blue and Black ( there are 2 black wires to ground and either one makes no difference )
Last edited by Parker 7; 11-19-2022 at 06:09 PM.
#184
Looking at point 9 double hash stop sign when the key is in the run position ...............................
Point 9 is a ground command path
So the fan control relay module is putting out a feeler voltage on wire Yellow / White
Your observation of it going to 0 V ( since it is grounded out on the Yellow / White wire ) is correct only with the key in run
They don't use distantly different wire colors so can be confusing on which side of the 2 wire pressure switch it is referencing / location
Point 9 is a ground command path
So the fan control relay module is putting out a feeler voltage on wire Yellow / White
Your observation of it going to 0 V ( since it is grounded out on the Yellow / White wire ) is correct only with the key in run
They don't use distantly different wire colors so can be confusing on which side of the 2 wire pressure switch it is referencing / location
Last edited by Parker 7; 11-19-2022 at 07:16 PM.
#185
Looking at point 9 double hash stop sign when the key is in the run position ...............................
Point 9 is a ground command path
So the fan control relay module is putting out a feeler voltage on wire Yellow / White
Your observation of it going to 0 V ( since it is grounded out on the Yellow / White wire ) is correct only with the key in run
They don't use distantly different wire colors so can be confusing on which side of the 2 wire pressure switch it is referencing / location
Point 9 is a ground command path
So the fan control relay module is putting out a feeler voltage on wire Yellow / White
Your observation of it going to 0 V ( since it is grounded out on the Yellow / White wire ) is correct only with the key in run
They don't use distantly different wire colors so can be confusing on which side of the 2 wire pressure switch it is referencing / location
So in all likely hood my brand new relay is already bad
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JensenHealey
XJ40 ( XJ81 )
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11-18-2021 08:17 PM
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