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When looking at 657, it grounds to turn on the trans light, I have never looked for a positive voltage but it would be there if the TCM was not trying to turn on the trans light, the other lead to the trans light is hot (12V) all the time, so 657 would be "hot" until the TCM grounds it to turn...

Also again do all voltage tests with the equipment connected, use a sharp meter (or test light) probe to pierce the wire jacket, When I locate 290, 537 and 657 at the TCM I wrap a bread tie around them to make it easier to find the next time I am looking for voltages (or ground in the case of...

You cannot connect the relay incorrectly, it does not matter which way 57/29 are connected or the 290/291 wires. one side has female and the other male connectors, same thing with the circuit breaker. You need to start confirming if you are getting 12V to 537 and 290/291 at the TCM then if not...

You should have 24V across wires 29 and 57 at the transmission relay in the run position. 57 goes to ground and 29 goes to the run circuit. This is the only place in the transmission circuits you should have 24V This is shown in the picture above. Did you check for 12V at 537?

If you do not have power going into the TCM box at 290/291 then check 537, if you have power there then you have a relay problem, ether the relay wiring or 24V feed to the coil. If you do not have power to 537 then you have a general 12V feed/breaker issue. This should be checked at J1 going...

There are two 12v feeds to the TCM one switched and one not switched, you need to make sure you have both of them. Here is the troubleshooting guide that will give you the schematics you need to troubleshoot. You will need 24V to the relay coil with the ign. on