2003 Honda civic hybrid driving without Ima Battery

[faraz779]

hi every body can anybody quide me how to drive my hybrid if i want to disconnect the ima battery permanantely without losing my electronic power stearing function and 12v battery charging ability is it possible just in case bcoz my ima battery is on its last breaths i think if possible can you explain what to disconnect after opening the ima compartment thanks in advance

[MN Driver]

I'm not aware of anyone who has done this yet and posted about it here on the Insight forum about the Civic. With the Insight the connections for the BCM and can be unplugged but with the Civic the connection for the BCM that would require disconnection also contains MCM wiring therefore you lose the connection required for the car to get power from the IMA motor and allow the DC-DC to charge the 12v battery.

Do you have a Civic Hybrid service manual that contains the wiring diagram for the IMA system for your car?

[faraz779]

Thanks for your reply but I don't have any service manual I am hoping somebody can quide me or put me in right direction with this I was under the impression ist gen civic hybrid and insight r pretty much same you just have to switch the hybrid battery off and disconnect all Bcm plugs
May be hybrid battery repair Ron can help or anybody else thanks in advance

[Hybrid-Battery-Repair]

Originally Posted by faraz779

hi every body can anybody quide me how to drive my hybrid if i want to disconnect the ima battery permanantely without losing my electronic power stearing function and 12v battery charging ability is it possible just in case bcoz my ima battery is on its last breaths i think if possible can you explain what to disconnect after opening the ima compartment thanks in advance

We're working on a bypass connector for the Civic so that a junction board can be put in place of the battery, but it's not done yet. One thing hindering development is the lack of a civic to test on.

Insights have separate BCM and MCM computers. You can remove the BCM and leave the MCM intact. The Civic's computer is combined into one.

You could try disconnecting connector A on the MDM and see if the car will run at all.