Toyota Corolla Cross: System Description
SYSTEM DESCRIPTION
GENERAL
(a) The airbag ECU assembly estimates the weight of an occupant based on signals received from the 2 occupant classification sensors. The airbag ECU assembly determines whether the front passenger seat is occupied and classifies the occupant based on the estimated weight, front passenger side buckle switch state, acceleration sensor signal and vehicle speed signal.
(b) The airbag ECU assembly controls the operation of the passenger airbag ON/OFF indicator and restricts the operation of the instrument panel passenger without door airbag assembly.
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CAUTION / NOTICE / HINT
HINT:
Use the following procedure to troubleshoot the occupant classification system.
*: Use the GTS.
PROCEDURE
1. VEHICLE BROUGHT TO WORKSHOP
OPERATION CHECK CHECK SRS WARNING LIGHT (a) Primary check
(1) Turn the ignition switch to ON and check that the SRS warning light turns on.
(2) Turn the ignition switch off. Wait for at least 2 s
INITIALIZATION DESCRIPTION (a) Zero point of the occupant classification sensors may deviate in the following situations. To ensure sensor accuracy, be sure to perform Occupant Detection Sensor Zero P
SEE MORE:
VEHICLE CONTROL HISTORY (RoB)
DESCRIPTION
Vehicle Control History (RoB) is a function that captures and stores ECU
data when triggered by specific vehicle behavior.
It may be possible to determine the cause of the malfunction by checking
the vehicle history information and freeze frame
INSTALLATION CAUTION / NOTICE / HINT COMPONENTS (INSTALLATION)
Procedure Part Name Code
1 AIRBAG ECU ASSEMBLY
89170A
- -
2 FRONT FLOOR CARPET ASSEMBLY
58510D -
- -
3 NO.1 CONSOLE BOX DUCT
58861B
