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:
PARTS LOCATION ILLUSTRATION
*1 POWER BACK DOOR UNIT ASSEMBLY SET LH
*2 MULTIPLEX NETWORK DOOR ECU
*3 POWER BACK DOOR WARNING BUZZER
*4 POWER BACK DOOR UNIT ASSEMBLY SET RH
*5 POWER BACK DOOR SENSOR ASSEMBLY RH
*6 BACK DOOR OPENER SWITCH ASSEMBLY
DESCRIPTION
Detection Item
Symptom
Trouble Area
Radio Receiver Assembly Communication Stop Mode
Communication stop for "Display and Navigation (AVN)" is indicated on
the "Communication Bus Check" screen of the GTS.
