Speedometer not working

Need help. Speedometer not working . I replaced all 4 wheel sensors and transmission speen sensor. Thinking im not getting signal from ecm . Dont want to throw more parts at it

 

Have you hooked up a scan tool to see if it shows speed? That would narrow it down a little.

 

Yes i did. No speed

 

I would trace wiring, since this appears to be a wiring issue. Either to/from the ECU. Throwing parts never ends well, should be the last thing once a diagnosis is made. Tracing wires is probably time consuming, but most cost effective. Rule our your ECU until you have confirmed no issues in wiring. Do you have taillights or bake lights? Are there other systems out of service? Maybe a corroded ground point. Does the speedometer move when driving in reverse?

 

Did you have any codes? Which transmission speed sensor did you change? The rear one?

 

Did not know there was more then 1 speed sensor on the transmission. I will look into that. I dont drive the truck very often

 

I just tried changing the front transmission speed sensor(i had an extra) no change. Brake light is on and abs light. Cant remember what codes were on but they all had to do with brakes and traction control

 

Brake light is on and abs light I have same lights on, please let us know if you find what's causing it Thanks

 

Its the ABS ecu, its reads the signal from the wheel speed sensors and then passes that data on to the cluster to run the speedometer. I would be looking at reading the trouble codes in the ABS module, not the trouble codes in the Engine Control Module.

 

Could this be from an incompatible speed sensor? Having same issue, is rear left, right mandatory or is general rear speed sensor ok? Scan tool says possible fix is right rear wheel bearing? I have no speedometer but do have mileage, dash showing abs light, airbag light, check engine light 04 tundra 4.7 v8 rwd sr5 dc