dangerous doug Posted May 1, 2016 Share Posted May 1, 2016 Hi all. Both tuner studio and megatune are not reading my MAT sensor, I have re wired the plug and checked continuity from plug to earth and plug to pin 20 on the D37 both read fine with no resistance. I recently bought another kit from nige and have tried the new sensor from that but still nothing. Surely I can't have had two dead sensors bought a year apart? I assume there not polaric? Any ideas? 2 Quote Link to comment Share on other sites More sharing options...
lo-fi Posted May 1, 2016 Share Posted May 1, 2016 The MS just measures the resistance of the sensor, so no polarity issues. I'd maybe check the circuit on the MS board. What version PCB are you running? Quote Link to comment Share on other sites More sharing options...
dangerous doug Posted May 1, 2016 Author Share Posted May 1, 2016 Couldn't say, it's one of Niges ECUs if that's any help? Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted May 1, 2016 Share Posted May 1, 2016 Triple check your wiring.... I would be very surprised if the board was not made correctly. Haven't you now got a spare ECU anyways Quote Link to comment Share on other sites More sharing options...
dangerous doug Posted May 2, 2016 Author Share Posted May 2, 2016 You would think that wouldn't you but I gave the electrical half of the kit to pete so he could get a head start with finding places for the ecu ect. Like I say I have continuity from red/black through the plug to pin 20 and the same on earth. Quote Link to comment Share on other sites More sharing options...
lo-fi Posted May 2, 2016 Share Posted May 2, 2016 Do you get roughly 5V on pin 20 with nothing else connected? Quote Link to comment Share on other sites More sharing options...
dangerous doug Posted May 2, 2016 Author Share Posted May 2, 2016 I will check tomorrow. if not, what would that point to? Quote Link to comment Share on other sites More sharing options...
lo-fi Posted May 2, 2016 Share Posted May 2, 2016 It tests the internal reference voltage is present at the pin via the resistor R4 (assuming V2.2 PCB, but I believe the circuit is the same on the V3). The other thing to do would be grounding pin 20 and see what tuner studio shows. Quote Link to comment Share on other sites More sharing options...
dangerous doug Posted May 3, 2016 Author Share Posted May 3, 2016 No voltage between pins or pin to earth, no funny reading through tuner studio when it's bridged to earth still get continuity through the loom so it looks like it's going off to be fixed Quote Link to comment Share on other sites More sharing options...
lo-fi Posted May 3, 2016 Share Posted May 3, 2016 Sounds like a fault in the MAT circuit. You should see 5V between pin 20 and one of the ground pins. Grounding the pin should definitely make the gauge move!! Green or blue pcb? Quote Link to comment Share on other sites More sharing options...
dangerous doug Posted May 4, 2016 Author Share Posted May 4, 2016 I havnt opened it up mate. Some things are best left untouched by my fat clumsy fingers Quote Link to comment Share on other sites More sharing options...
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