I have the 2005 r171 slk 200 european model,B48 passenger seat occupancy sensor is defective,how can i fix this???thanks

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There is no relay for the passenger side air bag . What seams to be the trouble ? There is possibly a code set in the air bag control module .
Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) The air bag supplemental restraint system (SRS) is designed to provide increased collision protection for front seat and second row outboard occupants, in addition to that provided by the 3-point safety belt system. Safety belt use is necessary to obtain the best occupant protection and to receive the full advantage of the SRS.
This vehicle line contains dual stage deployment (advanced restraint system) driver and front passenger air bag modules. These vehicles are also equipped with driver and front passenger safety belt retractor pretensioners. These vehicles can also be equipped with optional side air curtains that deploy from the A-pillar to the C-pillar upon a side impact. Vehicles with optional side air curtains are also equipped with seat side air bag modules in the front seats.
Side air curtains deploy from the headliner, protecting the first and second row outboard occupants during a side impact. Seat side air bag modules deploy from the outboard front seat backrest upon a side impact. In addition, a front impact severity sensor is mounted to the lower radiator support, a seat position sensor is mounted to the driver seat and a usage detection switch is added to the front driver and passenger outboard buckles. If equipped with optional side air curtain modules and seat side air bag modules, there are an additional 4 side impact sensors.
Vehicles are also equipped with an occupant classification sensor (OCS) system as part of the front passenger seat. The OCS system includes 2 OCS rails and an OCS module.
Passenger Air Bag Deactivation (PAD) Indicator
The passenger air bag deactivation (PAD) indicator is a visual indicator used to inform the front seat occupants of the passenger air bag deactivation state. The PAD indicator is a stand-alone lamp installed into the vehicle instrument panel in a position visible to each front seat occupant.
The restraints control module (RCM) controls the state of the PAD indicator through a direct hardwire connection, based on information provided by the occupant classification sensor (OCS) system. The PAD indicator is lit to indicate the passenger air bag module is disabled. An exemption to this is when the front passenger seat is determined to be empty and passenger safety belt buckle unbuckled, and therefore indication of a deactivated passenger air bag module is not necessary. In all other cases, the PAD indicator is unlit when the passenger air bag module is enabled.
When the ignition switch is in the ON position, the PAD indicator prove-out period is initiated by the RCM. The RCM briefly activates the PAD indicator to prove-out the indicator function and verify to the front occupants correct functional operation of the PAD indicator.
The PAD indicator will be lit/unlit within 1.0 to 1.5 seconds of a change of state from the OCS system.
When an OCS system fault is present, the RCM defaults the passenger air bag module to the last valid state received from the OCS system until the ignition switch is turned OFF. If the OCS system fault is still present when the ignition switch is turned ON, the RCM defaults the passenger air bag module to enabled regardless of the size of occupant in the front passenger seat. The PAD indicator will be unlit. For information on the OCS system, refer to Occupant Classification Sensor System in this section.
The following table indicates the passenger air bag status and the PAD indicator status based the size of the front outboard passenger occupant.

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 alldata.com and here

just $4 to read it.

https://suzukipitstopplus.com/



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)

for

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.

Its a weight sensitive sensor, so you would probably have to come up with some sort of resistor. I doubt you can bypass it.

if there isn't a key switch in the dash, then the airbag has a sensor in the passenger seat which measures the weight of the occupant in that seat and if occupant is to light in weight the airbag will be shut off automatically. otherwise if occupant is heavier than 110 lbs the airbag should then be on.

Even thought the wiring might look ok unplug the the wires under the seat spray the plugs inside with some penetrating oil and try it again. that often works wonders

prob the passenger occupancy seat sensor mat, common fault on the e46, happened to my 320ci o4 plate, around 200 pound to fix, but could go wrong again.

Hey,
take a look at www.airbagmodul.com

They're working in Airbag-Simulators and Occupancy Sensor-Simulators.

Regards

Gerrit

The switch under the passenger seat that senses the occupant is defective. This happened to me under warranty and they fixed it.