Hello, I'm currently putting together a b16a2 with GSR head. I have a tune together and the car drive but I can't get the TPS to read in Hondata. If I try to read the maximum and minimum throttle positions it’ll come up with -5% closed and 60% Wide open. These figures will come up the same where ever the throttle actually is. The Harness being used is oem Em1 SI and looks to be in good condition. I have replaced the TPS with a new aftermarket one I bought awhile back from Ebay. The TPS was giving us the same issues reading so we figured it isn't the TPS sensor itself. We replaced the plug for the sensor and it changed nothing. I found similar issues online on the Hondata forum and other threads on here but the solution everyone has is they replaced their ECU. I replaced my ECU with a new P08 with the S300v3 installed. This ECU has been tested and works. I can run my car with it and it data-logs as normal. I also found another thread of someone's throttle-body causing reading issues for the TPS but even with the TPS off we still got the same readings by hand.

Our only thoughts are the harness has an issues or the s300 itself is bad. We haven't tested with a multimeter yet because because now the harness is outside of the car.
If any of you guys have had this issue please send some suggestions.

Skunk2 Alpha Throttle-body
skunk2 Pro-series Intake-manifold.

Thanks.

 

Having the same issue, hoping someone figured this out? Sorry for the bump but im getting desperate to fix this.

 

Use a multimeter. Verify 5v into the TPS sensor by probing between the connectors VCC and ground pins. Verify .45-.5v closed throttle and 4v+ at wide open throttle by probing between the connectors signal and ground pins. Fix as needed.

TPS is processed by the honda ecu, not the s300. Move the s300 to another ecu if you suspect the ecu is bad. Chances are low. The only reasons I would replace the ecu are if the ECU won't give out 5v or if the signal voltage can be measured as working correctly with a multimeter but the ECU won't read it and I've verified the signal makes it to the ecu connector pin reliably.

 

Ok, I will verify. Thanks for the help.

 

so I verified the sensor and sensor wiring is good. Sensor center ohms @0.45 and after the plug its 1.0 ohm. The supply is 5v dc signal ground is good at sensor and ecu. I find it hard to believe that the tps section of the ecu is bad and the rest is good.