Kia Optima DL3: SRSCM / Front Impact Sensor (FIS)

Kia Optima DL3 2019-2026 Service and Repair Manual / Restraint / SRSCM / 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.

Components and components location

Components Location

1. Front impact sensor (FIS)

Repair procedures

Removal

Disconnect the negative battery terminal.

After disconnecting the cables, wait at least 3 minutes.

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

Tightening torque :

8.8 - 10.8 N·m (0.9 - 1.0 kgf·m, 6.5 - 7.2 lb·ft)

[LH]

[RH]

Installation

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

1.	Install a new front impact sensor.

Tighten the front impact sensor mounting bolt.

Tightening torque :

8.8 - 10.8 N.m (0.9 - 1.0 kgf.m, 6.5 - 7.2 lb-ft)

3.	Connect the front impact sensor connector.

4.	Install the radiator assembly.

5.	Reconnect the battery negative cable.

6.	After installing the front impact sensor, confirm proper system operation : Turn the ignition switch ON; the SRS indicator light should turn on for about six seconds and then go off.

❮SRS Control Module (SRSCM)

Description and operation Description The primary purpose of the SRSCM (Supplemental Restraints System Control Module) is to discriminate between an event that warrants restraint system deployment and an event that does not.

Side Impact Sensor (SIS)❯

Description and operation Description The Side Impact Sensor (SIS) system consists of two kinds of side impact sensor which are installed at each center of the front door module (left and right) and two rear sensors which are installed in the rear pillar (left and right).

Other information:

Kia Optima DL3 2019-2026 Service and Repair Manual: Evaporator Temperature Sensor

Description and operation Description The evaporator temperature sensor will detect the evaporator core temperature and interrupt compressor relay power in order to prevent evaporator from freezing by excessive cooling. The evaporator temperature sensor has the Negative Temperature Coefficient (NTC).

Kia Optima DL3 2019-2026 Service and Repair Manual: Ambient Temperature Sensor

Description and operation Description The ambient temperature sensor is located at the front of the condenser and detects ambient air temperature. It is a negative type thermistor; resistance will increase with lower temperature, and decrease with higher temperature.