Jphipps440

I think my bcm is bad. If i buy a used bcm from a 99 maxima can i just plug it in and car be fine or it have to be reprogrammed. Thanks for any help

Jphipps440

Is there a way to reset my bcm. Does removing negitave battery cable for 15 minutes reset bcm

BransAm

I replaced mine and didnt have to reprogram anything. I just unplugged the battery and took it out and plugged the new one in and plugged it back up and its been fine.
I have a spare that works if you need it. Just have to make sure the numbers on yours match and all. What year is your car?

Jphipps440

My car is a 99 what year is yours

Jphipps440

My 99 maxima 3.0 auto
Bcm Part # 2ht
28491 4l 700
8z18
I found a lot of used bcm on ebay but couldnt find one that all 3 sets of numbers matched up. Closest 1 i found was from a 99 maxima with manual trans the bcm # 2ht 28491 41700.i thaught manual trans would be different than auto. I have no idea what trim level my maxima has

BransAm

Jphipps440

Does mine have to come from an auto. Or will it work as long as it has the numbers are 2ht 28491.4l 700. Can a bcm also cause a random misfire

BransAm

PH98I30

It has been said that the 99 coil packs are sh!!tty. That is probably the misfire problem. Any ehgine codes to report?

Jphipps440

It has a 0300 engine code. I put new spark plugs in it and new coils. Sometimes it has a 1105 code. I cleaned map senspr and i can feel the map switch sylonoid clicking when key switch is turned on

PH98I30

Those are intake manifold codes. Check for manifold leaks. Only use NGK spark plugs.

Jphipps440

Thanks for the info. Ngk is the plugs i used. Tomarrow i will check for manifold leaks. When warm idling in gear sometimes it will idle rough while driving it runs smooth. I even changed fuel filter thinking that would help. I ordered a bcm off ebay hoping it will fix my windows locks cruise control and rear defogger

BransAm

Jphipps440

Thanks ill check the rear window switches. I baught the car with windows and stuff not working. I fixed the rough idle issue. You was right it was a vacumm leak. I found a small vacum line unplugged from the manifold runs and idles good now. Next is to fix the windows. I love this forum lots of smart people with good info.

PH98I30

When you need parts like switches and handles and that crap, go to a junkyard where the parts are cheap. Also, If you need to see how something is hooked up, sometimes you can see how it is done looking at a junkyard car. Usually things are in normal shape after a wreck except for the smashed parts. A junkyard is a good go to place.

Jphipps440

I replaced bcm today. Same thing i have no rear defogger no speed cruise windows and locks dont work. Dome lights dont work with doors key ring dont light up. I checked rear window switches to make sure they werent on wrong sides. I have no idea what to try.

BransAm

You have checked the fuses already i assume?

Jphipps440

Yes i checked all fuses with a testor there all good. I tried switching relays beside under dash fuse box.

Jphipps440

I got key ring lite dome lights and elec. Door locks working still no elec. Windows. For some reason door locks automatically unlock them selves as soon as there locked. I cant figure out whitch relay goes to windows

Jphipps440

I double checked fuses. Under dash fuse box
two fuses not getting power
#5 marked tail lamp 7.5a
#18 marked interuor illumination 7.5a
What can cause both fuses to not have any power. My tail lights and dome lights are working. Thanks for any help you can give

BransAm

Jphipps440

Oh your right i just tock the key out and it stayed locked my mistake. I baught two master window switches and none work the windows. I can lower and raise window by hooking wires straight to window motor harness. When i push window button i can hear clicking

Jphipps440

Solved. It was a bad switch wire to rhe power window relay. The red wire with grey stripe for switched hot into the power window relay wasnt getting juice. I hooked that wire to a fise link and to battery and windows cruise control and rear defogger is working good. I need to find a better place to hook the wire but everything works now. The relay is behind driverside kick panel. It has white/red wire yellow/red wire black wire red/ gray wire. Thanks for all the help