took out wire harness. cleaned corrosion. are wires back correctly?

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What code(s) did you get when you scanned the ECUs?

Have you put the orange safety disconnect back in place properly?

 

I know the breaker switch is in place and latched. I havent ran for codes yet. Not sure i have what one needs for that...

 

On the ECU, forward side, above the orange connector, there is a white connector that doesn’t look pushed into the ECU all the way. I could be wrong, but it appears to be sticking out a little and I can’t recall what my Gen 2 used to look like.


iPhone ?

 

You had v14 connecting/working on the prius, and then chose to downgrade to v13, and now it wont connect again?

Backing up a few steps, make sure you have bolted/grounded the HV battery case to the vehicle, else it will throw a DTC..

 

Looking at your photo, I initially thought the latch appears to be a bit high from where it should be. Then after looking at it 10 more times, lol, my eyes are getting blurry and I think it probably is ok. Just in case, many people miss step 3 of this:

 

When you say you switched 2 orange wires, you mean the two heavy gauge cables? One long one that goes to the (-) terminal on the farthest module and the short one that goes to the (+) terminal on the nearest module? Then the other ends connect to the main relays?

Did you try to put the car in ready mode while they were reversed?
If so, you may have popped the 125 amp (?) fuse that's inside the safety disconnect.

If you never tried to start the car, then it shouldn't have caused a problem. As long as the main relays never tried to close, it's still an open circuit and no HV is applied to the rest of the car.

 

Just to clarify, you've never been able to connect to the mini-vci cable or to the vehicle, with any version of techstream?

 

There is no top connecting bracket over the 2 large orange cables. Supposedly the absence of that bracket can cause error code.

 

I apologize for not looking more closely at your photos. You have the small white wire connected incorrectly. It needs to go on the output side of the relay, not the input side. That white component is a current limiting resistor to allow the initial "power-up", while preventing an initial large current rush. The orange wire going from the stud to the quick connect is the "power" going to one side of the small relay. The white wire leaving the small relay goes through the resistor, then to the output side of that main relay. The small relay closes first, connecting the orange wire to the white wire, to energize the HV system while the resistor limits current flow, and then the main relay closes. The small relay then opens to take the resistor out of the circuit. At that point, all HV power is being supplied via the main relays.

 

Odds are pretty good that moving the wire to the correct position will allow the car to function, as long as there are no other issues.

 

You could disconnect the 12v battery, remove the safety disconnect from the HV battery, swap the wire to the correct position and then connect everything back together. remember all 3 steps of the safety disconnect installation. That should clear all the codes from the ecu memories.

When you go to start the car, the first time you press the power button, you'll have some dash alarms. You'll need to press the power button one more time (2x total with foot on brake) to clear the dash lights. Then the car should go ready. This is normal for any time 12v power is removed and then reconnected.