Hello all,



I am new to no pistons. I have a problem with the wifes car. Fromt eh moment that we start it up the seatbelt light will flash at 1 sec. intervals and not stop until we shut the car off. With that when we try to roll down either the passenger or drivers side window it will only go down with the flashing light i.e. in 1 sec intervals. Anyone have any clue as to what this would be? It just started out of the blue. I sincerely appreciate any help. This is on a 1993 FD in japan. thank you https://www.nopistons.com/forums/pub...1047683358.gif

have you checked the amperage coming from the alternator? if a single light is affecting the power to the window, my guess is not enough power. also, there i a plug at the bottom of the seat that you can disconnect to make the flashing go away

I will check that in the morning. Thank you for the reply https://www.nopistons.com/forums/pub...#>/biggrin.png by the way love the color of your 7

13.9 coming out of the alternator and 13.6 at the battery. ANyone think of anything else?

isnt htat fairly low? my pfc reads 14.1V when i have a lot of things running in the car

also try to measure the amperage you can have more than 12v, but if you're only producing so many amps things wont work right.



i had a messed up alternator that was producing 14.7-15.9V but it wasnt making enough amps to let my fuel pumps work correctly, and my lights were fluctuating

I run 13.7-13.9 constantly, the voltage output is a function of the regulator and I think, under normal circumstances, normal is 13.5-14V at idle.

our alternators have internal regulators

I just started recieving the flashing seat belt light this week as well. If the seat belt isnt plugged in it beeps as well. No other problems. If anyone has an answer I would like to know as well.

This is driving me crazy. I took it to a shop and they wanted to change all the relays in the car until it fixed it. this sucks

haha i also have been experiencing these problems. Any new updates on how to fix it? Would the problem be fixed by changing the alternator?

yeh it is the relay pack in the black cpu box near to fuse box on a north american FD If your car is a RHD FD it is located on the right of the steering column mounted horizontal. just buy a used one and replace it. you need to match up the box number fd001 ect

so that is the problem? Thanks for the help man because i have been having this problem for a while now and no one seemed to know what it was. it is embarassing when i go to the drive thru at mcdonalds, he he. thanks man, i will see if i could find a used one.

Hi i just purchased a 93 RHD FD3S and i am getting the same problem. I tried locating the relay but i think the past owner removed it. Is it right above the fuse box on the same board? Its labeled f100 on my box.



I also tried to find a new or used one and i failed. It troubles me because i should be able to locate this part on the internet but i am hitting dead ends everywhere.

lol the old, "throw money at it till it goes away" aproach to mechanics.. i would find a new shop.

Same problem here. CPU 2/ FD 100, they are hard to come by. I got one off Ebay after dealership quoted me $200 plus for the unit.

Correction to my last post, CPU 2/ FD 001 is the NA relay. If u have RHD you need F100(1992) or F110 (1993+) relay which is universal with 1992/93. I tracked one down from the UK on following forum:



http://mazdarotaryclub.com/forums - they are running for about 25 pounds/ $36 - $40 plus shipping



https://i217.photobucket.com/albums/...s/DSCF0618.jpg



Both the FD01 (NA) and F110 look identical, but F100/ F110 have 10 pin slot versus 20 pin FD01. I found out the hard way and order FD01 and pulled out F100 and was pissed.



So if any NA (North America) FD need a CPU 2, I have 1 with mounting bracket and three other relays attached for sale if anyone is looking.