SYSTEM DESCRIPTION
1. GENERAL
(a) Deceleration sensors used for the airbag system are installed on various parts on the vehicle and calculate the deceleration rate of each part during a collision.
(b) Depending on the situation, the center airbag sensor assembly sends a deployment signal to airbag and pretensioner based on the information from each sensor.
2. DEPLOYMENT CONDITION
(a) FRONTAL COLLISION
(1) Frontal collision signals are produced based on the information from the center airbag sensor assembly and front airbag sensors.
HINT:
*: In case of a frontal collision, the SRS ignition signal could be output with the deceleration sensor ON signal even without a signal from the front airbag sensors.
(2) Frontal collision signals are used to deploy the airbags and pretensioners except the side airbags.
(b) SIDE COLLISION (1)
(1) The side airbags are deployed based on signals from the side airbag sensors and center airbag sensor assembly.
HINT:
The curtain shield airbags and front pretensioners are deployed at the same time.
(c) SIDE COLLISION (2)
(1) The curtain shield airbags are deployed when both of the following conditions are met:
How To Proceed With Troubleshooting
Problem Symptoms TableVehicle Specifications have not been Stored (B2451)
DESCRIPTION
The headlight leveling ECU assembly stores this DTC if the vehicle specifications
have not been stored in the ECU.
HINT:
The vehicle specifications are stored in the ECU at the factory.
DTC No.
DTC Detecting Condition
...
Inspection
INSPECTION
PROCEDURE
1. INSPECT DRIVE MONITOR SWITCH
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
Condition
Specified Condition
3 (E) - ...
Light bulbs
You may replace the following bulbs yourself. The difficulty level of replacement
varies depending on the bulb. If necessary bulb replacement seems difficult to perform,
contact your Toyota dealer.
For more information about replacing other light bulbs, c ...