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the battery wires tend to corrode over time. there's not much you can do. most buy a new sense harness, they are inexpensive. sometimes cleaning...
Have you read this thread about battery ECU fires? The battery fires at ECU sense connector thread | PriusChat I think your harness and ECU are...
Yes, that's fairly normal, but less common in dryer regions... As far as I know the only time this turns into a problem is where the orange...
Did you fully check the sensing wires for breaks/corrosion. Also check the plug end of the sensing wire harness as well as the pins on the hv...
Usually when I get this code the first thing I do is look for corrosion in the hyrbid battery ECU where the voltage sensing harness plugs in. IF...
I see this problem all the time in Oregon, it is caused by corrosion on the sensing harness plug and battery ECU. This needs to be addressed...
This. When live data reports negative numbers or 0 for block voltages the sensing harness and ECU are done for. STOP driving the car right now, it...
This is the classic battery ECU/sensing harness issue. You need to address this ASAP before it gets worse and results in a burned out ECU,...
[ATTACH] MONITOR DESCRIPTION The battery ECU monitors a voltage of the battery blocks to detect an open malfunction in internal battery...
The new battery came with a new wiring harness so that is not a common part between the two batteries. For more info on the sensing wires read...
it doesn't make sense that the battery wouldn't fluctuate. any idea what happened to the car that required the harness? at 84k, it should run like...
remove both harnesses and check individual battery voltage. I had this happen and the acid followed the sensing wires all the way to the...
Thanks! The large 2 volume set of Toyota Prius manuals came with the car. New voltage sensing harness from Toyota installed - this came with 2...
A voltmeter has two test leads. Attach one test lead to one end of the modules. You could, for example, start at the end closest to the traction...
My aunt gave me a 2005 Prius after her brother passed... This car has been sitting in a field at the edge of the woods for 5 years. We installed...
If you place your battery so the sensor harness is toward you, the sensor tab #1 on the far left is connected to the (-) end of the battery. That...
T1 Terry "As a 40 yr plus mechanic, I have seen some really strange things, like wiring harnesses with an oil leak," 35 years here. As far as...
Doesn't it look as though the wiring harness has been connected incorrectly You either have residual voltage or twice the voltage
Is "HV ECU" the ECU you really mean here? The battery ECU is inside the traction battery; the HV ECU is behind the glove box, in the dash. (The...
