Kia Forte: SRSCM / Side Impact Sensor (SIS)

Kia Forte 2019-2021 (BD) Service Manual / Restraint / SRSCM / Side Impact Sensor (SIS)

Description and operation
Description

Side Impact Sensor (SIS) system consists of two Pressure Side Impact Sensor (P-SIS) installed at each center of the front door module (LH and RH), two SIS installed at each center pillar nearby (LH and RH).

Pressure Side Impact Sensor is also called P-SIS because it detects pressure due to collision at its mounting location.

Side Impact Sensor is also called G-SIS because it detects acceleration.

SRSCM determines the deployment of airbag and the time of deployment based on the collision signal from the SIS at the time of collision.

Components and components location
Components

1. Pressure Side Impact Sensor (P-SIS)
2. Gravity Side Impact Sensor (G-SIS)

Repair procedures
Removal

Gravity Side Impact Sensor (G-SIS)

1.

Disconnect the negative battery terminal .

  

After disconnecting the cables, wait at least 30 seconds.

2.

Remove the center pillar trim.

(Refer to Body - "Center Pillar Trim")

3.

Loosen the bolt and then remove the side impact sensor (A).

Tightening torque :

8.8 - 9.8 N·m (0.9 - 1.0 kgf·m, 6.5 - 7.2 lb·ft)

4.

Disconncet the side impact sensor connector (A).

Pressure Side Impact Sensor (P-SIS)

1.

Disconnect the negative battery terminal .

  

After disconnecting the cables, wait at least 30 seconds.

2.

Remove the front door trim.

(Refer to Body - "Front Door Trim")

3.

After disconnecting the pressure side impact sensor connector (B), remove the pressure side impact sensor (A) by rotating counterclockwise.

Installation
1.

Install in the reverse order of removal.

  

The door module must not be transformed because SRSCM judges an impact with the pressure sensor in the door module.

There is a chance to have some problem with durability and decline performance of detacting collision if the door module installed area has been damaged.

2.

After installing the side impact sensor, confirm proper system operation:

Switch "ON" the ignition. The SRS indicator light should turn on for about six seconds and then off.

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