KIA Niro: Front Impact Sensor (FIS) | Side Impact Sensor (SIS)

Front Impact Sensor (FIS) Description and operation

Description

• The front impact sensor (FIS) is installed in the Front End Module (FEM). They are remote sensors that detect acceleration due to a collision at its mounting location. The primary purpose of the Front Impact Sensor (FIS) is to provide an indication of a collision. The Front Impact Sensor (FIS) sends acceleration data to the SRSCM.
• They are remote sensors that detect acceleration due to a collision at its mounting location.
• The primary purpose of the Front Impact Sensor (FIS) is to provide an indication of a collision. The Front Impact Sensor (FIS) sends acceleration data to the SRSCM.

Front Impact Sensor (FIS) Components and components location

Front Impact Sensor (FIS) Repair procedures

Removal

1. Disconnect the battery negative terminal, and wait for at least thirty seconds before beginning work.
2. Disconnect the front impact sensor connector (A).

3. Remove the front impact sensor (A) by loosening the nut after disconnecting the connector (B).

Tightening torque: 8.0 - 10.0 N.m (0.8 - 1.0 kgf.m, 5.9 - 7.3 lb-ft)

Installation

1. Install in the reverse order of removal

Warning

Do not turn the ignition switch ON and do not connect the battery terminal while replacing the front impact sensor.

Side Impact Sensor (SIS)

Description

• Side Impact Sensor (SIS) system consists of two Pressure Side Impact Sensor (P-SIS) which are installed at each center of the front door module (LH and RH) and two SIS which are installed at each center pillar nearby (LH and RH) and two rear SIS which are installed in the rear pillar (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 A-SIS because it detects acceleration.
• SRSCM decides deployment of the airbag and the time of deployment through the collision signal of the SIS when the collision occurred

Side Impact Sensor (SIS) Components and components location

Side Impact Sensor (SIS) Repair procedures

Removal

Pressure side impact sensor (P-SIS)

1. Disconnect the battery negative terminal, and wait for at least thirty seconds before beginning work.
2. Remove the front door trim.

   (Refer to Body (Interior and Exterior) - "Front Door Trim")

3. Remove the pressure side impact sensor (A) by loosening the screws and then disconnect the connector (B).

Tightening torque: 2.0 - 3.0 N.m (0.2 - 0.3 kgf.m, 1.5 - 2.2 lb-ft)

Front Gravity side impact sensor (G-SIS)

1. Disconnect the battery negative terminal, and wait for at least thirty seconds before beginning work.
2. It separates the center pillar trim.

   (Refer to Body - "Built-in Trim")

3. Remove the side impact sensor connector (A).
4. Loosen the mounting bolts and remove the side impact sensor (B).

Tightening torque: 8.0 - 10.0 N.m (0.8 - 1.0 kgf.m, 5.9 - 7.3 lb-ft) Installation

Installation

Pressure side impact sensor (P-SIS)

1. Install in the reverse order of removal.
2. After replacing the side impact sensors must ensure that the system is operating normally.

Warning

Turn the ignition switch ON; the SRS indicator light should be turned on for about six seconds and then go off

Warning

• You must comply with the specified tightening torques with the tool specified because Pressure - Side Impact Sensors (P-SIS) may be broken or the POP-NUT may be rotated.
• Problems may be occurred in the durability of P-SIS or impact sensing performance may be depreciated if POP-NUT is rotated.
• The door module must not be transformed because SRSCM judges a impact through the pressure sensor in the door module.

Front Gravity side impact sensor (G-SIS)

1. Install in the reverse order of removal.

Warning

• You must comply with the specified tightening torques with the tool specified because Pressure - Side Impact Sensors (P-SIS) may be broken or the POP-NUT may be rotated.
• Problems may be occurred in the durability of P-SIS or impact sensing performance may be depreciated if POP-NUT is rotated.
• The door module must not be transformed because SRSCM judges a impact through the pressure sensor in the door module.

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