2007 hino 268

Jonny esposito

New Recruit
Mechanic
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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

Moderator
Staff member
Mechanic
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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.
 
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