Kia Rio: Weight Classification System (WCS) Description

WCS is intended to detect the occupant’s physique in order to determine whether the passenger airbag should be suppressed or deployed. WCS classifies the front passenger side seat by measuring physical weight loaded onto the front passenger side seat. It is composed of 2 weight sensors of strain gauge type and an ECU which gathers information of weight sensors, calculates the measured weight and makes decisions of the classification of the passenger. It is installed on the left side (inner position in vehicle) of the seat track assembly fastened with respective mounting bolts and nuts.

Seat Belt Buckle Switch (BS) Installation

   Be sure to install the harness wires so they will not pinch or interfere with other parts. ...

Weight Classification System (WCS) Components

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Inspection
1. Turn the ignition switch OFF and disconnect the battery negative (-) cable. 2. Disconnect the fuel pressure regulator valve connector. ...

Anchor Pretensioner (APT) Installation
1. Remove ignition key from the vehicle. 2. Disconnect the negative (-) cable from battery and wait for at least thirty seconds. ...

Door Switch Inspection
1. Remove the door switch and check for continuity between the terminals. ...