SYSTEM DESCRIPTION
1. SRS (SUPPLEMENTAL RESTRAINT SYSTEM) AIRBAG SYSTEM
(a) General Description
(1) The SRS airbag system consists of the following airbag and main components:
Airbag |
Access Cab Model |
Double Cab Model |
---|---|---|
Driver Airbag |
Standard |
Standard |
Front Passenger Airbag |
Standard |
Standard |
Knee Airbag |
Standard |
Standard |
Side Airbag |
Standard |
Standard |
Curtain Shield Airbag |
Standard |
Standard |
Main Components |
Features |
---|---|
Airbag Sensor Assembly |
|
Occupant Detection ECU |
Determines front passenger seat occupant conditions through occupant classification sensors |
Front Airbag Sensor |
Detect intensity of frontal collisions though electrical deceleration sensor |
Side Airbag Sensor Assembly |
Detect intensity of side collision through electrical deceleration sensor |
Rear Airbag Sensor |
Detect intensity of side rear collision through electrical deceleration sensor |
Occupant Classification Sensors |
Detect occupant weight on front passenger seat |
Seat Position Airbag Sensor |
Detects driver seat position |
Seat Belt Buckle Switches |
Detect whether of not seat belt fastened |
Airbag ON/OFF Indicator |
Illuminates ON or OFF light to indicate front and side passenger airbag deployment availability |
SRS Warning Light |
Illuminates to indicate existence of malfunctions in SRS airbag system |
2. AIRBAG DEPLOYMENT
(a) Front Collisions
(1) The driver and front passenger airbags are in case of frontal collisions. These airbags deploy by dual stage control. In order to activate dual stage control, the airbag sensor assembly monitors the following information through the components shown in the table below:
Seat |
Information |
Models with Separate Seat |
---|---|---|
Driver |
Intensity of Impact |
Same As Left |
Driver |
Driver Seat Position |
Same As Left |
Driver |
Seat Belt Position |
Same As Left |
Front Passenger |
Intensity of Impact |
Same As Left |
Front Passenger |
Occupant Weight |
Four Occupant Classification Sensors |
Front Passenger |
Seat Belt Condition |
Same As Left |
(b) Side Collisions
(1) The side and curtain shield airbags are in case of side collisions. The side airbags are installed in the seat backs of the driver seat and the front passenger seat, and the curtain shield airbags are installed in the upper areas of the right and left center pillars. If a side airbag sensor assembly detects an impact, the airbag sensor assembly causes the side and curtain shield airbags to be deployed simultaneously.
(c) Rear Side Collisions
(1) The side and curtain shield airbags are in case of rear side collisions. The side airbags are installed in the seat backs of the driver seat and the front passenger seat, and the curtain shield airbags are installed in the upper areas of the right and left center pillars. If a side airbag sensor assembly detects an impact, the airbag sensor assembly causes the side and curtain shield airbags to be deployed simultaneously.
Dtc Check / Clear
DTC CHECK / CLEAR
1. CHECK DTC (for TIRE PRESSURE WARNING ECU AND RECEIVER) (USING TECHSTREAM)
(a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON.
(d) Turn the Techstream on.
(e) Enter the following menus: Chassis / Tire Pressure Monito ...
Removal
REMOVAL
CAUTION / NOTICE / HINT
HINT:
Use the same procedure for the RH side and LH side.
The following procedure is for the LH side.
PROCEDURE
1. PRECAUTION
NOTICE:
After turning the ignition switch off, waiting time may be required before disconnecting
the cable from the ...
Check Bus 2 Lines for Short Circuit
DESCRIPTION
There may be a short circuit between the CAN main bus lines and/or CAN branch
lines when the resistance between terminals 18 (CA4H) and 17 (CA4L) of the central
gateway ECU (network gateway ECU) is below 54 Ω.
Detection Item
Trouble Area
Resi ...