coolant temp switch - why is it connected to pin A12?
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From: Twin Cities / Albany, MN/NY
coolant temp switch - why is it connected to pin A12?
OBD1 d16z6
When the coolant temp switch clicks on it provides ground to the radiator fan relay which powers on the radiator fan. It also grounds pin A12 of the ECU.
My question is: Why does the ECU need this signal? What does it do? Do I really need it?
Right now I just have my fan hardwired and A12 hooked to the cts.
When the coolant temp switch clicks on it provides ground to the radiator fan relay which powers on the radiator fan. It also grounds pin A12 of the ECU.
My question is: Why does the ECU need this signal? What does it do? Do I really need it?
Right now I just have my fan hardwired and A12 hooked to the cts.
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