2007 hino 268

[Jonny esposito]

If anyone has an idea that would be great haha,
Speedo isnt working or milage reading. Changed cluster and sensors on trans still no luck. Any ideas ? Or do i have a tcm or ecm issue

 

[greasytshirt]

Pin 25 on the TCM sends a signal to the instrument cluster that gets converted to speed. This is likely a wiring problem, if I had to guess. Take a peek in the junction box behind the air filter. Look at the connector terminals for corrosion.