Hello!

I have a problem with my 2001 Mazda 626 (FS, 2liter manual) with the air bag light; The yellow SRS light on the left side is on all the time and the red air bag light blinks 4 long and 5 short cycles. I did some research and came to the conclusion that code 45 is the passenger side seat occupancy sensor. I think that the airbag light came on after I did some fixing to the immobilizer system - I changed the coil in the ignition system (I mean the part where you insert the key) from same salvage Mazda 626 and wired a couple of connections back together plus some minor things that I was adviced to do. Now the immo-problem is fixed and the car starts everytime with no issue or immobilizer light staying on, BUT NOW the SRS air bag fault code makes it that I cant pass the inspection or drive it on public roads. So I have to get the problem solved.

My question to the smarter Mazda professionals is following: How can I diagnose that the occupancy sensor is really causing the yellow SRS light to stay on and the red one blinking the code 45?

I did some testing with multimeter on the connector (white, brown and red wires coming under the seat) that comes from under the seat cushion (Not the yellow air bag connector) but all I got was the basic approx. 12,1Volts from the brown and red wires which is normal(?) and maybe about 0.8V from the white (signal?) wire that changes to blue after the connector that evuntually goes under the floor mat. The voltage or resistance did not change even if I sat on the seat. So based on that could I assume that the occupancy sensor is really the reason for the air bag fault?

My next question is that how could I make the bypass for it? I know there is emulators for sale, but I have a bunch of resistors, diodes, pcb boards, wire and soldering tools, so I could easily make one myself.
All I need is a reference from a working occupancy sensor so I now what kind of resistor(s) and/or diode I need. I cant find anything on the repair manual or the wiring diagram about this sensor.. '

If nobody has the same Mazda with side air bags who could test the correct values from the sensor then please help and guide me what to do next so I could fix this annoying issue.
Should I just try any configurations I am able to do (meaning that I randomly put like 100ohms to 400k ohms resistors and the most common signal diode 4148 to the connector end) and just hope dor the best?
I am not going to take the car to repair shop because I know they would replace the seat which is pointless in a car thats +20years old and because I know there is a bypass for this that will still keep the air bags working in case of an accident.

I can add photos from the wiring that comes out of the seat cushion if it helps anyone with this process.

Thanks beforehand for any advice!!

 

Heeelp. How do I make my own emulator!!

Give me a schematic atleast, I know that someone has it.