Toyota Yaris: Airbag System / Operation Check

Toyota Yaris XP210 (2020-2024) Reapir and Service Manual / Vehicle Interior / Supplemental Restraint Systems / Airbag System / Operation Check

OPERATION CHECK

PRECAUTION FOR OPERATION CHECK

  • Be sure to read Precaution thoroughly before servicing.

    Click here

  • Be sure to correctly follow the removal and installation procedures for the SRS parts.

NOTICE:

If there is any damage or deformation of airbag installation components or the areas they are installed to, do not attempt to repair them. Replace the damaged components with new ones.

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 seconds, then turn the ignition switch to ON. The SRS warning light comes on for approximately 6 seconds and diagnosis of the airbag system is performed.

HINT:

  • If the SRS warning light remains on for approximately 6 seconds or more after the ignition switch has been turned to ON, there may be a malfunction in the SRS airbag system.
  • If the SRS warning light occasionally turns on approximately 6 seconds or more after the ignition switch has been turned to ON, there may be a short to +B, short to ground or an open in the SRS warning light circuit.
  • If the SRS warning light illuminates after turning the ignition switch off or to ACC, there may be a malfunction in the power source circuit or combination meter assembly.
  • The SRS warning light turns off, and then turns on. This blinking pattern indicates a power source voltage drop. The SRS warning light turns off 6 to 10 seconds after the power source voltage returns to normal.

FUNCTION OF PASSENGER AIRBAG ON/OFF INDICATOR

(a) Initial check

(1) Turn the ignition switch to ON.

(2) The passenger airbag ON/OFF indicator comes on for approximately 4 seconds, then turns off for approximately 2 seconds.

(3) Approximately 6 seconds after the ignition switch is turned to ON, the passenger airbag ON/OFF indicator will indicate ON/OFF according to the airbag cut off switch cylinder sub-assembly condition as listed below.

Indicator Operation

Airbag Cut Off Switch Cylinder Sub-assembly Condition

Passenger Airbag ON/OFF Indicator

SRS Warning Light

ON Indicator

OFF Indicator

*1: The ON indicator illuminates for approximately 60 seconds and then turns off.

ON

ON*1

OFF

OFF

OFF

OFF

ON

OFF

Switch failure

OFF

ON

ON

HINT:

If the SRS warning light is not illuminated and the passenger airbag ON/OFF indicator does not operate as specified in the table according to the airbag cut off switch cylinder sub-assembly status, no related DTCs will be stored. Proceed to the Trouble in Passenger Airbag ON/OFF Indicator troubleshooting procedure.

Click here

CHECK PASSENGER AIRBAG ON/OFF INDICATOR

(a) Turn the ignition switch to ON.

(b) Check that the passenger airbag ON/OFF indicator ("ON" and "OFF") comes on for approximately 4 seconds, then turns off for approximately 2 seconds.

HINT:

Refer to the indicator operation table in Function of Passenger Airbag ON/OFF Indicator for the passenger airbag ON/OFF indicator operation when the ignition switch is turned to ON and approximately 6 seconds elapse.

INSPECT AIRBAG COMPONENTS

(a) Inspect the SRS parts in table below.

Component to Inspect

Procedure

Horn button assembly

  1. Perform a diagnostic system check.
  2. Visually check for defects with the horn button assembly installed to the vehicle.

    HINT:

    The defects are as follows:

    • Cuts on the surface or in the grooves
    • Small cracks on the surface or in the grooves
    • Significant discoloration on the surface or in the grooves

    OK:

    No defects are found.

    If any defects are found, replace the horn button assembly with a new one.

Instrument panel passenger without door airbag assembly

  1. Perform a diagnostic system check.
  2. Visually check for defects with the instrument panel passenger without door airbag assembly installed to the vehicle.

    HINT:

    The defects are as follows:

    • Cuts on the instrument panel safety pad assembly around the instrument panel passenger without door airbag assembly
    • Small cracks on the instrument panel safety pad assembly around the instrument panel passenger without door airbag assembly
    • Significant discoloration on the instrument panel safety pad assembly around the instrument panel passenger without door airbag assembly

    OK:

    No defects are found.

    If any defects are found, replace the instrument panel safety pad assembly with a new one.

Curtain shield airbag assembly

  1. Perform a diagnostic system check.
  2. Visually check for defects with the curtain shield airbag assemblies installed to the vehicle.

    HINT:

    The defects are as follows:

    • Cuts on each pillar garnish or the roof headlining assembly around the curtain shield airbag assemblies
    • Small cracks on each pillar garnish or the roof headlining assembly around the curtain shield airbag assemblies
    • Significant discoloration on each pillar garnish or the roof headlining assembly around the curtain shield airbag assemblies

    OK:

    No defects are found.

    If any defects are found, replace each pillar garnish or the roof headlining assembly with a new one.

Front seat airbag assembly

  1. Perform a diagnostic system check.
  2. Visually check for defects with the front seat airbag assemblies installed to the vehicle.

    HINT:

    The defects are as follows:

    • Scratches, broken or frayed threads on the surface of the separate type front seatback assembly around the front seat airbag assemblies
    • Small cracks on the separate type front seatback assembly around the front seat airbag assemblies
    • Significant discoloration on the separate type front seatback assembly around the front seat airbag assemblies

    OK:

    No defects are found.

    If any defects are found, replace the separate type front seatback cover with pad with a new one.

Front seat outer belt assembly

  1. Perform a diagnostic system check.
  2. Visually check for defects with the front seat outer belt assemblies installed to the vehicle.

    HINT:

    The defects are as follows:

    • Cuts
    • Small cracks
    • Significant discoloration

    OK:

    No defects are found.

    If any defects are found, replace the front seat outer belt assembly with a new one.

Airbag sensor assembly

  1. Perform a diagnostic system check.

Front airbag sensor

Side airbag pressure sensor

No. 1 side airbag sensor

Harness and connector

    How To Proceed With Troubleshooting

    CAUTION / NOTICE / HINT HINT: Use the following procedure to troubleshoot the airbag system. *: Use the GTS. PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP NEXT 2...

    Problem Symptoms Table

    PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table...

    Other information:

    Toyota Yaris XP210 (2020-2024) Reapir and Service Manual: Precaution


    PRECAUTION PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL NOTICE: When disconnecting the cable from the negative (-) auxiliary battery terminal, some systems must be initialized after the cable is reconnected. Click here If the auxiliary battery has been discharged and charged or the cable has been disconnected and reconnected to the negative (-) auxiliary battery terminal, perform Steering Sensor Zero Point Calibration...

    Toyota Yaris XP210 (2020-2024) Reapir and Service Manual: Data List / Active Test


    DATA LIST / ACTIVE TEST HINT: Using the GTS to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed...

    Categories

    Refueling

    Before refueling, close all the doors, windows, and the liftgate/trunk lid, and switch the ignition OFF.

    To open the fuel-filler lid, pull the remote fuel-filler lid release.

    Toyota Yaris. Refueling

    To remove the fuel-filler cap, turn it counterclockwise. Attach the removed cap to the inner side of the fuel-filler lid.

    read more

     
    Copyright © 2024 www.toyaris4.com