Hv Battery Ecu

The problem can be caused by several different sources making p3000 a very generic and common fault code.

Hv battery ecu. Now this can mean that the battery ecu is bad or the car s computer is bad. Monitor the condition of the hv battery assembly through the use of the battery ecu and transmit this information to the hybrid vehicle control ecu. Power source control ecu controls the push button start system receives signals from switches and ecus communicates to the hv ecu power on power off 9. The sensing wire is broken.

Leave the cables disconnected for an additional 5 minutes to ensure full depletion of energy from the ecu capacitors then reconnect the battery cables. The communication malfunction is caused by the computers not properly communicating with each other. Most likely at the end of the terminal ring. Furthermore this system controls the battery blower motor controller in order to maintain a proper temperature in the hv battery assembly.

P3002 or hv ecu communication malfunction may indicate that the battery s ecu is bad. I ve had a car that wouldn t start because the corrosion was so bad. Battery ecu monitors the soc state of charge and battery temperature communicates with the hv ecu and controls the hv battery cooling fan. 1 hv battery ecu 89890 47092 or equivalent there are numerous part numbers for this ecu however they are all interchangeable.

The battery ecu uses the can controller area. Before you try to replace the ecu check your battery connections. Make sure the terminals are tight and free of corrosion. Hv battery state of charge uneven hv battery ecu detected voltage differences between blocks 38 cells 7 2v make 19 blocks 14 4v testing hv battery.

Sorry for the late reply i had a diagnostic test done by the rac. Ecu reset through ecu access. Locate the ecu under the driver s side dash of the nissan. May 29 2020 at 10 38 am.

I removed the hv battery removed top covers to expose the individual cells all cells were reading the same and in good balance so this points to a faulty hv battery ecu. Often time it is the battery ecu that will be bad. The p3000 fault code relates to the battery control system in the toyota prius.