Side Impact Sensor (SIS)

Description and Operation

Description

The Side Impact Sensor (SIS) system consists of two types of side impact sensors. The G-SIS sensors are installed in the center of each front door module (left and right), and two rear sensors are installed in the rear pillars (left and right).

• The front side impact sensor is also called P-SIS because it detects pressure caused by a collision at its installation location.

• The rear side impact sensor is also called A-SIS because it detects acceleration caused by a collision at its installation location.

The SRSCM determines airbag deployment and deployment timing through the SIS collision signal when a collision occurs.

Components and Component Location

Component Location

Repair Procedures

Removal

Gravity Side Impact Sensor (G-SIS)

1. 1

   Disconnect the negative battery cable.

2. 2

   Remove the center pillar trim.

   (Refer to Body - "Center Pillar Trim")

3. 3

   Remove the Gravity Side Impact Sensor (A) by loosening the bolt, then disconnecting the connector (B).

   Tightening torque:

   6.9–11.8 N·m (0.7–0.8 kgf·m, 5.0–5.8 ft-lbf, 60.8–69.4 in-lbf)

   

Pressure Side Impact Sensor (P-SIS)

1. 1

   Disconnect the negative battery cable.

2. 2

   Remove the front door trim panel.

   (Refer to Body - "Front Door Trim Panel")

3. 3

   Disconnect the connector (A) and turn the pressure side impact sensor (B) counterclockwise to remove it.

   Tightening torque:

   2.0–2.9 N·m (0.2–0.3 kgf·m, 1.4–2.2 ft-lbf, 17.4–26.0 in-lbf)

   

Installation

Pressure Side Impact Sensor [P-SIS (Door)]

1. 1

   Install a new front side impact sensor with the screws, then connect the front side impact sensor connector.

   Tightening torque:

   6.9–11.8 N·m (0.7–0.8 kgf·m, 5.0–5.8 ft-lbf, 60.8–69.4 in-lbf)

2. 2

   Install the front door trim panel.

   (Refer to Body - "Front Door Trim Panel")

3. 3

   Connect the negative battery cable.

4. 4

   After installing the front side impact sensor, verify that the system operates correctly:

   Turn the ignition ON; the SRS indicator should illuminate for about six seconds, then go off.

Gravity Side Impact Sensor [G-SIS (Center Pillar)]

1. 1

   Install the side impact sensor with the bolt, then connect the side impact sensor connector.

   Tightening torque:

   2.0–2.9 N·m (0.2–0.3 kgf·m, 1.4–2.2 ft-lbf, 17.4–26.0 in-lbf)

2. 2

   Install the center pillar trim.

   (Refer to Body - "Center Pillar Trim")

3. 3

   Connect the negative battery cable.

4. 4

   After installing the side impact sensor, check that the system operates properly.

   • Turn the ignition ON; the SRS indicator should illuminate for about six seconds, then go off.