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ELECTRICAL
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8.10.12 INERTIA SWITCH
An inertia switch is used to sense a sudden
deceleration or acceleration, which normally
occurs during collision.
FUNCTION:
In normal condition, the Inertia switch will
be open. If the vehicle experiences a sudden
deceleration or acceleration as in case of a
collision, the inertia switch will be closed. When it
is closed, it sends a signal to BCM. Upon receiving
the signal, the BCM does the following
1. Switch ON the turning indicators.
2. Switch on the roof lamps.
3. Unlock the doors.
The Inertia switch can be reset by pressing it on
the top.
LOCATION:
It is located on Co-driver side behind
the ‘A’ pillar lower trim.
INERTIA SWITCH RESETTING PROCEDURE
1. Remove the lower A pillar trim. (
Refer body
section
)
2. Reach out for the Inertia Switch.
PINOUT
PIN
DESCRIPTION
1
Not Connected
2
Signal to BCM
3
Supply
INSPECTION
In the normal condition there should be no
continuity between pin 2 and pin 3.
Give one vigorous shake to the inertia switch and
check the continuity between pin 2 and pin 3 it
should be around 320 M Ohms.
! CAUTION
Press the reset button before installing.