Standard resistance 

If the result is not as specified, replace the switch assembly.
Removal
InstallationRemoval
Disconnect cable from negative battery terminal
Caution:
Wait at least 90 seconds after disconnecting the
cable from the negative (-) battery terminal to
prevent airbag and seat belt pretensioner activation.
Remove mass air flow meter
Disconnect the mass air flow meter connector.
...
Installation
Install mass air flow meter
Install the mass air flow meter with the 2 screws.
Notice:
Make sure that the o-ring is not cracked or
jammed when installing it.
Connect the mass air flow meter connector.
Connect cable to battery negative terminal
...
System description
General
The front passenger occupant classification system
judges whether the front passenger seat is occupied
or not in accordance with the seat belt buckle
status; and whether the seat is occupied by an adult
or child (with child seat) in accordance with the load
that is applied ...