efi265 Posted June 24, 2017 Report Share Posted June 24, 2017 So I have wired the sensor as follows 3 wires red +5v . blue an volt 4. black ground outIs this correct I have been getting error 14 low voltage on an2 & an4 Quote Link to comment Share on other sites More sharing options...
Adamw Posted June 25, 2017 Report Share Posted June 25, 2017 The sensor pinout for the press sensors that we sell are in the help file: Quote Link to comment Share on other sites More sharing options...
efi265 Posted June 26, 2017 Author Report Share Posted June 26, 2017 Yeah will check it out thanks Quote Link to comment Share on other sites More sharing options...
efi265 Posted June 28, 2017 Author Report Share Posted June 28, 2017 (edited) hi guys I cleared the event log files history to see if these errors gomy fuel has now as below gone to 5v now and reads pressure reading has maxed outany ideasI checked the sensor as above fuel was working fine but I started to get errors now thisI have attached my last log before fuel senor issue has other volt errors may help thanksRosscheersLog 24-06-17 3;19;04 pm.llg Edited June 28, 2017 by efi265 wanted to be notified of replys Quote Link to comment Share on other sites More sharing options...
Simon Posted June 28, 2017 Report Share Posted June 28, 2017 You have a 5V supply error showing that will generally indicate the 5V out is shorted to ground or a voltage greater than 5V (ie 12V short)It could be the pressure sensor is faulty and internally shorting. (we have seen this before) Quote Link to comment Share on other sites More sharing options...
efi265 Posted July 3, 2017 Author Report Share Posted July 3, 2017 Ok checked my sensor wiring harness and have 5v when earthed power and earth and also power and signal is this correct .. Quote Link to comment Share on other sites More sharing options...
Adamw Posted July 3, 2017 Report Share Posted July 3, 2017 Ok checked my sensor wiring harness and have 5v when earthed power and earth and also power and signal is this correct ..Huh? that is a very confusing statement (or maybe I'm just up too late again)... Can you try saying that a bit slower this time... Quote Link to comment Share on other sites More sharing options...
efi265 Posted July 4, 2017 Author Report Share Posted July 4, 2017 Sorry I have tested my fuel sensor wiring harness at the sensor and I get 5v at sensor power to sensor earth and 5v when I connect sensor power to sensor signal as I have been getting an volt errors since fitment of sensor I would like to make sure this is correct my fuel sensor went good but I started getting an volt errors on all my an1-4 volts then my fuel sensor errored at 5v now nothing .guess it's stuffed just don't wana fit another sensor and it fails againThanks Quote Link to comment Share on other sites More sharing options...
Simon Posted July 4, 2017 Report Share Posted July 4, 2017 Between the ground and the signal this should not be sitting at 0V this would indicate a failed sensor or a loom short. Quote Link to comment Share on other sites More sharing options...
Ken Dunkley Posted July 7, 2017 Report Share Posted July 7, 2017 Hey Ross - I had trouble with wiring the pins in the plug for my fuel pressure sensor as well . On mine two pins were touching giving all sorts of voltage errors and it also made other sensors read wrong also . I think the 5v was touching the ground . Double check the plug pins . Quote Link to comment Share on other sites More sharing options...
efi265 Posted July 7, 2017 Author Report Share Posted July 7, 2017 Cheers man Quote Link to comment Share on other sites More sharing options...
don17 Posted May 22, 2023 Report Share Posted May 22, 2023 On 6/25/2017 at 4:51 PM, Adamw said: The sensor pinout for the press sensors that we sell are in the help file: http://i.imgur.com/1Ln2jCg.png Is it possible to use the same +5v power supply for 2 different sensors, as I only have 1 5v+ outlet on my supra link Quote Link to comment Share on other sites More sharing options...
DerekAE86 Posted May 22, 2023 Report Share Posted May 22, 2023 Yep. The 5v isn't really a power supply, its a reference voltage. You use sensor 5v and sensor grounds as a clean reference so the ECU can utlize a lookup table to convert any voltage between those points to a known value, eg; temp, pressure, throttle position, etc since 5v will always be 5v regardless of battery condition or alternator charge. don17 1 Quote Link to comment Share on other sites More sharing options...
don17 Posted May 22, 2023 Report Share Posted May 22, 2023 1 minute ago, DerekAE86 said: Yep. The 5v isn't really a power supply, its a reference voltage. You use sensor 5v and sensor grounds as a clean reference so the ECU can utlize a lookup table to convert any voltage between those points to a known value, eg; temp, pressure, throttle position, etc since 5v will always be 5v regardless of battery condition or alternator charge. Perfect thanks, and I need to use a sensor ground, not just any ground? Quote Link to comment Share on other sites More sharing options...
DerekAE86 Posted May 22, 2023 Report Share Posted May 22, 2023 Yeah any analog sensor should be using the sensor ground pin for the same reasons. It'll always be a clean 0v signal the ECU can reference off. It doesn't matter if it's shared with other sensors, just don't share it with other functions like coil pack grounds or the Common pin on a idle motor etc. Using any ground will "work" but you're just leaving yourself open for interference and inaccurate readings. don17 and koracing 1 1 Quote Link to comment Share on other sites More sharing options...
AutoBanGarage Posted June 5, 2023 Report Share Posted June 5, 2023 can you share a 5v signal wire off of the expansion loom? for example, id like to wire my fuel pressure and oil pressure sensors to my expansion loom, but i am already using an volt 5 for my wideband. is there any other options i can use for fuel pressure or oil pressure? obviously using an volt 4 for one of them. those are my only other gauges. thanks ! Quote Link to comment Share on other sites More sharing options...
koracing Posted June 5, 2023 Report Share Posted June 5, 2023 Yes as the 5v is a reference voltage you can split that to as many sensors as you require. As far as inputs on your G4X E36 plug in ecu - you have a spare analog input on the MAF (AN Volt 6) you can use for one of the sensor inputs (pin 41). Alternatively you can feed the wideband in via CAN (if it is a CAN capable wideband) and use the expansion AN volts as the inputs. A third option would be to rewire the coolant or air temp sensors to use Temp 3 or Temp 4 on the expansion freeing up either AN Temp1 or AN Temp 2. AN Temp 1 and 2 can be used as analog inputs by disabling their pull-up resistors in the software. Quote Link to comment Share on other sites More sharing options...
Adamw Posted June 6, 2023 Report Share Posted June 6, 2023 There is also AN Volt 3 on Pin 13 that can be re-purposed, originally the narrowband O2 signal. Quote Link to comment Share on other sites More sharing options...
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