Subaru BRZ 2013 · Service Manual Interior body & electrical

Front sub sensor

Components Removal / installation

SRS AIRBAG
FRONT SUB SENSOR
EXPLODED VIEW
REMOVAL
WARNING:
The following service operations include the works which may affect the SRS airbag system. Before starting work, always be sure to confirm the precautions related to the SRS airbag system. (Refer to )
NOTE:
The following procedure is for LH side. Unless otherwise specified, perform the same procedures for the RH side.
1. Precautions
CAUTION:
After turning the ignition switch to OFF, you may have to wait for a while before disconnecting the battery terminals. Check appropriate precautions for battery terminal disconnection before proceeding. (Refer to )
2. Disconnection of the battery ground terminal
(1) Turn the ignition switch to OFF, disconnect the battery ground terminal, and then wait for 60 seconds before starting the work. (Refer to )
WARNING:
The air bag and pretensioner system are fitted with a backup power supply. If you start the work within 60 seconds after disconnecting the battery ground terminal, the air bag may be activated.
CAUTION:
To avoid damage to the molding, be sure to fully open the door glasses on both driver’s and passenger’s sides.
3. Removal of the front sub sensor LH
(1) Check that the ignition switch is turned to OFF.
(2) Check that the battery ground terminal is disconnected.
WARNING:
·After disconnecting the battery ground terminal, do not start the work before waiting for 60 seconds.
·If the work is performed before disconnecting the battery ground terminal, the airbag may be activated just by the impact applied to the front sub sensor LH itself. Make sure to confirm the auxiliary battery ground terminal is disconnected before starting the work.
(3) Remove the clip and move the washer tank filler.
(4) Remove 2 bolts and 2 guides.
CAUTION:
·Do not apply strong impact (such as dropping) to the front sub sensor LH.
·If strong impact is applied to the front sub sensor LH, replace it with a new one.
·Do not remove the front sub sensor from the bracket. If the front sub sensor is removed from the bracket, replace it with a new one.
INSTALLATION
CAUTION:
·If the airbag has been activated, replace the front sub sensor with a new one.
·Do not reuse the bolt and nut.
Always replace with the specified new bolt and nut.
NOTE:
The following procedure is for LH side. Unless otherwise specified, perform the same procedures for the RH side.
1. Installation of the front sub sensor LH
(1) Before installation, inspect the following items and replace any faulty part with a new one.
·Front sub sensor and bracket are damaged.
·Connector is damaged.
(2) Check that the ignition switch is turned to OFF.
(3) Check that the battery ground terminal is disconnected.
WARNING:
·After disconnecting the battery ground terminal, do not start the work before waiting for 60 seconds.
·If the work is performed before disconnecting the battery ground terminal, the airbag may be activated just by the impact applied to the front sub sensor LH itself. Make sure to confirm the battery ground terminal is disconnected before starting the work.
(4) Connect the connector to the front sub sensor LH.
CAUTION:
When engaging the connector, insert it straight taking care not to twist it.
(5) Insert 2 guides and install temporally the front sub sensor LH.
(6) Using 2 bolts, install the front sub sensor LH.

Standard value:
Tightening torque=13N·m { 133kgf·cm} {9.6ft·lbf}
(7) Check the front sub sensor LH for looseness.
(8) Move the washer tank filler to the original position.
2. Connection of the battery ground terminal

Standard value:
Tightening torque=6.0N·m { 61kgf·cm} {4.4ft·lbf}
3. Inspection of the airbag warning light (Refer to )