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
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TERMINALS OF ECU
*1 Battery ECU Assembly
- - Battery ECU Assembly
Connector Code Terminal No.
Symbol Terminal Description
O211 1
TC0 Intake air temperature sensor signal
2 GC0
Intake air temperature sensor ground
INSPECTION CAUTION / NOTICE / HINT
NOTICE:
Make sure the contact surface of the cam timing control motor with EDU assembly (the surface that contacts the No. 2 timing chain cover assembly) is free of foreign matter.
If the cam timing control motor with EDU assembly has been struck or drop
