Hino 258 trans light

[Phil@WAP]

I am working on a 2007 Hino with a transmission light and derate problem. Have gotten a code for no communication with the tcm, have gone through the wiring and made repairs to damaged wires. still having the issue, have swapped the tcm for a known good. no change. any Ideas?

 

[Baja]

I had problem with pin being pushed in on a plug for transmission i could not start on the ignition switch at all
Since that no problem
Just an idea

 

[Phil@WAP]

thank you for the suggestion, I will look at that on monday

 

[Phil@WAP]

well, it is headed to the allison shop.

 

[Hino123]

load test wires with a headlamp. You can perform a wire overlay. Check the pass through connectors for green pins. No communication could be datalink, power or ground. Load test the power and ground and check resistance at the TCM. Let us know what you find.

 

[Phil@WAP]

wiring checked out ok, allison shop found the shift solenoids to be bad.

 

[Hino123]

Well you don’t see that often. Thanks for the reply.