HollywoodJackson Posted May 7, 2022 Report Share Posted May 7, 2022 Greetings all, Here is my specific question. On the 2JZGE block, there is one coolant temp sensor near cylinder 1, close to the heads. Can I send that temp signal ECU to be able to read the temp on an aftermarket dash (or a OBD port device), AND ALSO use the ECU to activate a fan relay using either a +/- to the fan's relay? Thanks for any info! All the best, ~HollywoodJackson~ Quote Link to comment Share on other sites More sharing options...
aerace_fab Posted May 7, 2022 Report Share Posted May 7, 2022 yes and yes. Use any available aux output and preferable a low side switching from that aux to trigger the relay. HollywoodJackson 1 Quote Link to comment Share on other sites More sharing options...
HollywoodJackson Posted May 8, 2022 Author Report Share Posted May 8, 2022 Thanks for answering. Looking at the user's manual that came with the ECU, I'm looking at pin B5 Ground (trigger). This pin has a blank in the function column. Would this be a pin that I could use to complete a ground with the fan relay? Quote Link to comment Share on other sites More sharing options...
Vaughan Posted May 9, 2022 Report Share Posted May 9, 2022 14 hours ago, HollywoodJackson said: I'm looking at pin B5 Ground (trigger) That is the ground reference for one of the triggers (Trig 1 or Trig 2) which are used for engine position detection. Best bet would to be use one of the outputs that aren't needed, maybe purge (Aux 10 B74), Fuel pressure increase solenoid (Ign 8 B73) or even the ac clutch output if you don't have AC Quote Link to comment Share on other sites More sharing options...
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