The most gentle approach to fixing, or at least getting your pack to a healthy status, is to attain a grid charger, or build one, and build a discharger.
Both are very straight forward to make, and both will get your pack nice and healthy.
The biggest downside is TIME. If you can skip driving the Insight for a week, you canat least get the pack healthy enough to start doing proepr diagnosis.
You will have electrical issues all day long if the pack is not healthy, and the 12v side of things isnt healthy (is the 12v battery good, are the grounds good, is the ELD good, etc..)
Discharge with a pair of cheap light bulbs and sockets. If you get the sockets with wires, put them into series. This gives you the opportunity to buy a pair of low power bulbs and a pair of high power bulbs. You kill a chunk of voltage with the high power bulbs down to around 140 votls or so, unplug and let pack settle for 2-3 hours, then plug the low power bulbs in and elt it drain til 100-120 volts. Let the pack settle for a few hours, then grid charge back to full, let it settle for a few hours, the do the low power bulbs and discharge as far as 3-4 days will take. THen you elt the pack settle again for a few hours, and let it grid charge.
Then you can unhook your grid charger, wait a couple hours for the pack to fully settle, pull the IMA fuse under the dash (7.5 amp I beleive) or the 30amp pink ACC/initialization fuse under the hood (you have the correct fuse when your keyless remote doesnt do anything), and sit for a minute or two.
Then the next time you fire up the car, it will need to perform a positive re-calibration. It will charge the pack and measure how much effort the pack is making to accept the charge. If it doesnt like what it sees, it throws an IMA light. If it is satisfied for the time being, you go out on a 2-3 hour drive to cycle everything.
