SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022

Last Modified: 05-13-2024	6.11:8.1.0	Doc ID: RM10000000289S0
Model Year Start: 2023	Model: GR Corolla	Prod Date Range: [11/2022 - ]
Title: SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 - ]

HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

HINT:

Use these procedures to troubleshoot the airbag system.
*: Use the GTS.

PROCEDURE

1.	VEHICLE BROUGHT TO WORKSHOP

2.	CUSTOMER PROBLEM ANALYSIS

(a) Confirm problem symptoms.

Click here

3.	INSPECT AUXILIARY BATTERY VOLTAGE

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

Standard Voltage:

11 to 14 V

HINT:

If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding.

(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.

4.	CHECK CAN COMMUNICATION SYSTEM*

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

for HV Model: Click here

for Gasoline Model: Click here

HINT:

The airbag sensor 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.

Result	Proceed to
DTC is not output	A
DTC is output	B

GO TO CAN COMMUNICATION SYSTEM

for HV Model: Click here

for Gasoline Model: Click here

5.	CHECK DTC*

(a) Check for DTCs and freeze frame data.

for Freeze Frame Data: Click here

Body Electrical > SRS Airbag > Trouble Codes

Result	Proceed to
Airbag system DTCs are output	A
Occupant classification system DTCs are output	B
No DTCs are output	C

GO TO DIAGNOSTIC TROUBLE CODE CHART

for TMC Made: Click here

for TMMMS Made: Click here

6.	CHECK VEHICLE CONTROL HISTORY (RoB)*

(a) Check for Vehicle Control History (RoB).

Click here

Body Electrical > SRS Airbag > Utility

Tester Display
Vehicle Control History (RoB)

Result	Proceed to
Vehicle Control History (RoB) is not output	A
Vehicle Control History (RoB) is output	B

GO TO PROBLEM SYMPTOMS TABLE

GO TO VEHICLE CONTROL HISTORY (RoB)