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Good morning, Years ago p/s seat occupant sensor went out. Took it to Toyota and they calibrated it. Two months later it went out again.

Took it back and they said that the sensor was could not be recalibrated that it would have to be replaced. That included taking the seat apart and replacing the sensor. Ok got it but looking at all the diagrams I didn't see any in the seat only attached to the bottom and seatbelts and such. Any ideas?

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  • Toyota Master
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What they are talking about is replacing the seat sensor grid that measures the weight it is located directly under the seat covering.

Posted on Aug 15, 2017


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Related Questions:

1 Answer

Suzuki forenza 2005 what is b1446 mean

short answer, Occupant controls failure. Passenger seat.

medium answer , air bags ,seat sensors and or seat belt systems failure.

Long answer.

no engine of the 5, are stated. nor country,

This is covered 100% in the book called FSM.

the factory service manual, on all cars. they have one

read it.? or at and here

just $4 to read it.

my best guess, is air bags (and ARE a danger to all mechanics that fail to read the FSM warnings, !!!)

the module is not communicating , due to power loss is the clue.

in case you dont know, error codes never tell you what part is bad

it at the least tells you what signal is dead, bad or a sensor not responding

what a tech,does, is do more test to ISOLATE the true cause.

others guess, and go broke fast $$$$$$

the Forenza is this Suzuki with Daewoo body and GM enigne,

are real pistol to work on,,,

rule 2, is the code is unique to suzuki, no other cars.

B1446 (i roll dice and guess)

2.0L engine, automatic.

out of FSM it states

but what does , OC mean,

its short, (not nice huh)


e Occupant Classification System (OCS)

Trouble Code: B1446 (2.0L L4 VIN - Auto)

OC Passenger Short to Power (Battery) or No Response

Trouble Code Conditions:

The OC sensor wiring is shorted to the battery wiring

Possible Causes:

  • Circuit

  • Sensor

OC rules before PLAYING around. a short excerpt.

If the vehicle is equipped with the Occupant Classification System (OCS), do not connect the battery negative cable before performing the OCS Verification Test using the scan tool and the appropriate diagnostic information. Personal injury or death may result if the system test is not performed properly.

Never replace both the Occupant Restraint Controller (ORC) and the Occupant Classification Module (OCM) at the same time. If both require replacement, replace one, then perform the Airbag System test before replacing the other.

Both the ORC and the OCM store Occupant Classification System (OCS) calibration data, which they transfer to one another when one of them is replaced. If both are replaced at the same time, an irreversible fault will be set in both modules and the OCS may malfunction and cause personal injury or death.

If equipped with OCS, the Seat Weight Sensor is a sensitive, calibrated unit and must be handled carefully. Do not drop or handle roughly. If dropped or damaged, replace with another sensor. Failure to do so may result in occupant injury or death.

If equipped with OCS, the front passenger seat must be handled carefully as well. When removing the seat, be careful when setting on floor not to drop. If dropped, the sensor may be inoperative, could result in occupant injury, or possibly death.

If equipped with OCS, when the passenger front seat is on the floor, no one should sit in the front passenger seat. This uneven force may damage the sensing ability of the seat weight sensors. If sat on and damaged, the sensor may be inoperative, could result in occupant injury, or possibly death.

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2006 Ford Fusion DTC B2290 Occupant Classification System (OCS) fault

My airbag light came on a few months ago. I checked all the connections under the seat and that did nothing. I got a BlueDriver scan tool and it showed me the B2290 code. This points to a sensor under the passenger seat which includes the rail system that the seat slides on. I did a ton of research and didn’t see a good solution. I went to two trusted mechanics and all they could give me was information I already had and suggested I go to a dealership. I went to a Ford dealership and gave them $100 to tell me what I already knew, and also got an estimate of $1,500 to fix the issue. They wanted to charge $1,000 for the OCS replacement kit and seat rails, because apparently everything should be replaced as a single unit according the manufacturer.

I said to myself, “That’s ridiculous.” I also did a lot of cursing. I ended up finding a good salvage yard called Pull-A-Part. I was lucky enough to find a 2007 Fusion with the seat in good condition. I went to and saw that this car was not in an accident. That’s important because the OCS system might not be good if it was. It took me less than an hour to remove the seat and disconnect the seat pan from the back of the seat. The pan comes off as one piece with the rails and all the OCS wiring underneath. They charged me $8 for the part! Can’t beat that!

So I did the proper depower of the system by removing the fuses for the OCS and RCM. Then I disconnected the negative battery terminal and waited a few minutes. I took out the bad seat pan and track assembly and replaced it with the salvaged pan and tracks. The swap took about an hour. I reinstalled the seat, put the fuses back, did a proper repower of the system (sounds weird, but before you connect the negative battery cable you turn your ignition to the “On” position; not sure why), turned my ignition off, waited ten seconds, and finally turned it back on. Airbag light is off! DTC B2290 moved from “active” status to “stored” which means it’s no longer an issue. I feel so victorious. It’s always awesome to fix something yourself and also save this much money. I only wish I never gave my money to the dealer, but from everything I read they were the only people who could fix this issue. I’m here to tell you that you can do it yourself. I will point out that my new seat may need to be recalibrated using a Ford scan tool, but my light is off and that’s all I care about. I hope this helps someone with the same problem.

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