SUPPLEMENTAL RESTRAINT SYSTEMS  AIRBAG SYSTEM  HOW TO PROCEED WITH TROUBLESHOOTING  

Interview the customer and confirm the problem.

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING202201,999999,_V1,_107171,_0496334,RM100000001YK2G,

Measure the auxiliary battery voltage with the ignition switch off.

Standard Voltage:

11 to 14 V

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

Check the fuses and relays.

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

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

OK:

CAN communication system is functioning normally.

HINT:

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Refer to Communication Bus Check in CAN Communication System.

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for HEV Model: Click herePower Source / Network>NETWORKING>CAN COMMUNICATION SYSTEM (for HEV Model)>DIAGNOSIS SYSTEM202307,999999,_57,_104409,_0606038,RM100000002C0LE,

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for Gasoline Model: Click herePower Source / Network>NETWORKING>CAN COMMUNICATION SYSTEM (for Gasoline Model)>DIAGNOSIS SYSTEM202307,999999,_57,_104409,_0605911,RM100000002C081,

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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.

Check and record current DTCs, history DTCs and Freeze Frame Data.

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM>FREEZE FRAME DATA202201,202405,_58,_115188,_0511913,RM1000000020FQU,202405,999999,_58,_115188,_0511913,RM100000002MT7A,

Body Electrical > SRS Airbag > Trouble Codes

50001 444

HINT:

Refer to Airbag System Diagnostic Trouble Code Chart:

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM>DIAGNOSTIC TROUBLE CODE CHART202307,999999,_58,_115188,_0511913,RM100000002BI87,

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

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM>DIAGNOSTIC TROUBLE CODE CHART202307,999999,_58,_115188,_0511913,RM100000002BI87,

Check and record Vehicle Control History (RoB).

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM>VEHICLE CONTROL HISTORY (RoB)202201,202405,_58,_115188,_0511913,RM1000000020FR0,202405,999999,_58,_115188,_0511913,RM100000002MT7H,