2014 Civic Si - Tire Pressure and TC Issue

[chambers805]

Greetings,

I recently had my TCM installed, the software and hardware in flashpro is green. I was able to do the 40mph calculation but I have a tire pressure error and the squiggly TC light is stuck off. All the google and chatgpt resources say that I need to reset TPMS 3x and drive it for 30 minutes between 40-65Mph and it will go away but it still has not. When i manually reset the TPMS in the iMid the tire pressure error comes back instantly and the stock TC off light is still on. Is there something in particular i need to do for it to learn? I have the TC switch set to off, does it need to be on the low setting for it to learn?

Thank you ahead for a response.

[Spunkster]

The Hondata Traction control should not interfere with these systems unless someone has disconnected wires or installed something incorrectly. Have the installer double check everything.

[chambers805]

Well in the 2014 Honda Civic Si, I believe tpms is built into the abs module. Where it reads wheel speeds does it's own calculations to determine if a tire is low, it doesn't have actual sensors in the tire or anything. The abs is reading in all 4 corners, I've reset the tpms and both TC and Tire pressure light turns off but then turns back on immediately. I have done the wheel speed calculation on the TC module and that's reading, just wondering why the TC light on the dash is on and have tire pressure warning after install.

[Spunkster]

It sounds like the wires were cut instead of being tapped into.

[chambers805]

Hmm would the ABS and hondata read all 4 tires if they were cut? I rechecked everything and its installed according to the instructions. :(

[Spunkster]

Were the ABS sensor wires cut or just tapped into?

[chambers805]

https://hondata.com/help/tractioncontro ... zoom75.png

Are you saying this hondata Image is wrong? That you clearly don't cut this wire unlike the image?


"Identify the negative wire from the wheel speed sensor. Cut the wire, strip and join to the Traction Control module input. The polarity of the wires from the Traction Control module is not important. Solder the joint and use heat-shrink to ensure a water-proof connection, then use zip ties for strain relief, and finally protect from abrasion with electrical tape."

[Spunkster]

Your vehicle does not have tire pressure sensors, and it instead monitors the wheel speeds to detect low tire pressure. This means that either there is low tire pressure, the tires are different sizes, or you have altered the wiring beyond the recommended installation for the traction control, and the signals are not being read properly by the TPMS of the vehicle.