[OrganicMechanic]

I really appreciate all the input.I won't know how to proceed until Monday (March 13) when they receive the MCM. I am wondering what they will say. I have been traveling and will probably take it home regardless and continue to dig for the answer. Stay tuned and help us all learn

 

[OrganicMechanic]

Well here we go, Monday at the Honda dealership they asked me to give them one more day as they had installed the used MCM. Which they said " cleared the P1644 code but they wanted to call Honda and be sure of their diagnosis which was they think the battery is dead" According to them, replacing the MCM revealed three more codes that require a good battery to trace. The three codes are: P1576, P1558, P1568. I gave them till Tuesday and they stuck to that diagnosis. On my journey home I realized they had left the battery switch in the on position which caused the car to run off the small 12v battery and it died on the highway. After three- four hours waiting on a roll back, and no call back from this dealer I was a bit frustrated. Then the door handle broke! Anyway, they charged me $380.00 plus I bought the MCM for $ 85.00 and the car is worse than when I brought it in. So now what???
I don't want to give up....

 

[KLR3CYL]

You need a hybrid battery.

If you need to drive the car, pull fuse #18 from the fuse box under the hood and leave it out. This will disable the hybrid system, but it will continue to charge the 12v system. Also, the car will then want to start in the 12v backup starter, you have to hold the key for about 5-10 seconds in the crank position before it actually cranks.

Scott

 

[OrganicMechanic]

Thanks Scott I was driving it in that mode by switching the main breaker in the back & disconnecting two molex plugs on the ECM.
Pulling fuse 18 would sure be easier. I am use to the delayed start. I don't want to give up on the battery project. This is a 3-4 yr old Bumblebee replacement ( which I thought would be redeemable). Can the big battery be grid charged with any twelve volt source?