Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: How To Proceed With Troubleshooting

Toyota Corolla Cross (2022-2024) Service Manual / Vehicle Interior / Supplemental Restraint Systems / Airbag System / 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.

CUSTOMER PROBLEM ANALYSIS

(a) Interview the customer and confirm the problem.

Click here

NEXT

3.

INSPECT BATTERY VOLTAGE

(a) Measure the battery voltage with the ignition switch off.

Standard Voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.

(b) Check the fuses and relays.

(c) Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.

NEXT

4.

CHECK CAN COMMUNICATION SYSTEM*

(a) Using the GTS, check if the CAN communication system is functioning normally.

OK:

CAN communication system is functioning normally.

HINT:

  • Refer to Communication Bus Check in CAN Communication System.
    • for HEV Model:

      Click here

    • for Gasoline Model:

      Click here

  • The airbag ECU assembly is connected to the CAN communication system. Therefore, before starting troubleshooting, make sure to check that there are no malfunctions in the CAN communication system.
NG

GO TO CAN COMMUNICATION SYSTEM

for HEV Model: Click here

for Gasoline Model: Click here

OK

5.

CHECK DTC AND FREEZE FRAME DATA*

(a) Check and record current DTCs, history DTCs and Freeze Frame Data.

for Freeze Frame Data: Click here

Body Electrical > SRS Airbag > Trouble Codes

HINT:

Refer to Airbag System Diagnostic Trouble Code Chart: Click here

Refer to Occupant Classification System Diagnostic Trouble Code Chart: Click here

Result

Proceed to

Airbag system DTCs are output

A

Occupant classification system DTCs are output

B

DTCs are not output

C
B

GO TO OCCUPANT CLASSIFICATION SYSTEM

C

GO TO STEP 10

A

6.

DIAGNOSTIC TROUBLE CODE CHART

(a) Proceed to Diagnostic Trouble Code Chart and perform troubleshooting for each code.

Click here

NEXT

7.

IDENTIFICATION OF PROBLEM
NEXT

8.

REPAIR OR REPLACEMENT
NEXT

9.

CONFIRMATION TEST
NEXT

END

10.

CHECK VEHICLE CONTROL HISTORY (RoB)*

(a) Check and record Vehicle Control History (RoB).

Click here

Result

Proceed to

Vehicle control history is output

A

Vehicle control history is not output

B
A

GO TO VEHICLE CONTROL HISTORY (RoB)

B

GO TO PROBLEM SYMPTOMS TABLE

    READ NEXT:

     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 f

     Utility

    UTILITY WRITE VIN/VEHICLE IDENTIFICATION NUMBER NOTICE: When the airbag sensor assembly is replaced, it is necessary to write the VIN/Vehicle Identification Number. Since the VIN informatio

     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 pr

    SEE MORE:

     Reassembly

    REASSEMBLY CAUTION / NOTICE / HINT COMPONENTS (REASSEMBLY) Procedure Part Name Code 1 VACUUM SENSOR GROMMET 89420K - - - 2 VACUUM SENSOR ASSEMBLY

     All Door Entry Lock/Unlock Functions do not Operate, but Wireless Functions Operate

    DESCRIPTION When the wireless operation can be used to lock and unlock the doors, communication between the electrical key and tire pressure warning ECU and receiver and certification ECU (smart key ECU assembly) is normal. If the entry lock and unlock functions do not operate, the entry cancel func

    © 2020-2024 Copyright www.tcorollacross.com