IMA AND 12V BATTERY INDICATORS ARE ON? FAULTY IMA COOLING FAN
If the IMA warning light as well as the 12v battery indicator appear on the dashboard of your Honda Hybrid vehicle, the issue may not be a faulty hybrid battery or even a faulty 12v battery. The culprit may very well be The hybrid battery cooling fan. In this video, I will explain the why as well as how to properly diagnose the issue, and how to sort it out.
Hi, This is Kaveen from Lucid Technologies. If you have a Honda Hybrid vehicle that has both the IMA indicator and the 12v battery indicator up on the dashboard, the most common reasons would be a faulty Hybrid Battery or a faulty 12v auxilary battery. Now, what most people don’t realize is that the same set of indicators can appear if your Hybrid battery cooling fan is defective, and here’s why.
In IMA based Hybrid vehicles such as the Honda Insight and Fit GP1, The hybrid battery assembly, also known as the Intelligent Power Unit, houses the NiMH battery modules as well as a few electronic devices. One of these devices, called the DC/DC Converter, is responsible for charging the 12v battery using energy from the hybrid battery modules. Note that there is no alternator in these vehicles.
Now when the vehicle is in use, all the components inside this Intelligent Power Unit will generate a lot of heat and the Hybrid Battery cooling fan is what is used cool them off. So when this fan doesn’t function properly, The DC/DC converter will overheat and will get temporarily shutdown thereby illuminating the 12v battery indicator along with the IMA indicator up on the dashboard. So when this happens, the vehicle can stall because the 12v battery is not getting properly charged. If you are faced with this situation, switch off the vehicle and try to start it back up after 30 minutes or so allowing the converter unit to cool down, and if the vehicle still doesn’t start, you will have to jump start your vehicle by connecting your 12v battery to another vehicle.
The next step would be to get your vehicle scanned at the nearest workshop, immediately. If the scanner shows the code P1448 with the description “Intelligent Power Unit Module Fan Problem”, then replacing your battery cooling fan from a reliable source will correct the issue. Now, you don’t have to spend a lot money on a brand new fan as long as you get a decent warranty for a second hand or remanufactured unit.
Unfortunately, there is nothing you as the vehicle owner can do to prevent the fan from failing. The electronic circuit inside the battery cooling fan fails in some vehicles due to a manufacturer defect.
So there you have it. I hope this has been informative to you and please feel free to drop your questions in the comments section below and I’ll be happy to assist. For information on services related to hybrid batteries and IMA battery cooling fan replacement, please get in touch with us through our website at www.lucidtechnologieslimited.com. Thank you for watching and do take care.