Weird IAT and ECT behavior
Posted: Mon Dec 27, 2021 2:30 pm
I am running hondata s300v3 with a p28 ecu. checked J1 and J12 and they are as they supposed to be. Afr reading seems to be fine connected to D10 using PLXSMAFR. Engine is a B20 Vtec(aka LS Vtec I think its called) Using all stock oem wiring with exception of vtec solenoid and plx afr. Checked and cleaned grounds.
I am having the strangest problem.
with all my sensor connected I get no errors, however IAT and ECT values are static on -37.
if I remove the IAT plug I get an IAT Error with data on the software.
if I connect the IAT and dicsonnect the ECT, I get ECT reading with ECT error on the software.
if I disconnect both IAT and ECT, I get readings on both of these in hondata software.
I believe the IAT sensor is on the intake manifold 2 pin plug normally a white sensor.
I believe the ECT sensor is a 2 in plug just below the vtec solenoid.
If the errors are correct then I am looking at the correct physical sensor and there is nothing wrong with them. Then I am left pulling my hair out to try figure why hondata software sensor and error codes don't match up. all sensors are oem
This is a new ecu and s300v3 recently purchased and I am trying to get the car up and running. previously used a local management that uses minimal sensors. attached are the screenshots. any help would really be appreciated.
I am having the strangest problem.
with all my sensor connected I get no errors, however IAT and ECT values are static on -37.
if I remove the IAT plug I get an IAT Error with data on the software.
if I connect the IAT and dicsonnect the ECT, I get ECT reading with ECT error on the software.
if I disconnect both IAT and ECT, I get readings on both of these in hondata software.
I believe the IAT sensor is on the intake manifold 2 pin plug normally a white sensor.
I believe the ECT sensor is a 2 in plug just below the vtec solenoid.
If the errors are correct then I am looking at the correct physical sensor and there is nothing wrong with them. Then I am left pulling my hair out to try figure why hondata software sensor and error codes don't match up. all sensors are oem
This is a new ecu and s300v3 recently purchased and I am trying to get the car up and running. previously used a local management that uses minimal sensors. attached are the screenshots. any help would really be appreciated.