How To Proceed With Troubleshooting [10/2023 - ]: Procedure

Result

Result: 

NEXT 

See step  2

1. Confirm problem symptoms.

   Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2023 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  3

1. Measure the auxiliary battery voltage with the power switch off.

   Standard voltage

   11 to 14 V

   HINT: 

   • A simple method to determine whether the auxiliary battery is discharged is to operate the horn.
   • If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding.
2. Check the fuses and relays.
3. Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  4

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

   OK

   CAN communication system is functioning normally.

   HINT: 

   • Refer to CAN Bus Check in CAN Communication System.

     Refer to DIAGNOSIS SYSTEM [10/2023 - ]

   • 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.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2023 - ] 

Result: 

OK 

See step  5

1. Refer to Operation Check.

   Refer to OPERATION CHECK [10/2023 - ] 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  6

1. Check for DTCs.

   Body Electrical > SRS Airbag > Trouble Codes 

   HINT: 

   Record or print DTCs if necessary.

   Result

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

Result: 

A 

GO TO PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [10/2023 - ]  

Result: 

B 

GO TO AIRBAG SYSTEM. Refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2023 - ] 

Result: 

C 

See step  7

1. Clear the DTCs.

   Body Electrical > SRS Airbag > Clear DTCs 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  8

1. Check for DTCs.

   Body Electrical > SRS Airbag > Trouble Codes 

   HINT: 

   Record or print DTCs if necessary.

   OK

   DTCs are not output.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2023 - ]  

Result: 

OK 

See step  9

1. Check for vehicle control history (RoB).

   Body Electrical > SRS Airbag > Utility 

   Tester Display
   Vehicle Control History (RoB)

   Result

   Result	Proceed to
   Vehicle control history (RoB) is not output	A
   Vehicle control history (RoB) is output	B

Result: 

A 

GO TO PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [10/2023 - ]  

Result: 

B 

See step  10

1. Clear the vehicle control history.

   Body Electrical > SRS Airbag > Utility 

   Tester Display
   Vehicle Control History

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  11

1. Check for vehicle control history (RoB).

   Body Electrical > SRS Airbag > Utility 

   Tester Display
   Vehicle Control History

   Result

   Result	Proceed to
   Vehicle control history (RoB) is not output	A
   Vehicle control history (RoB) is output	B

Result: 

A 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2023 - ] 

Result: 

B 

GO TO VEHICLE CONTROL HISTORY (RoB). Refer to  VEHICLE CONTROL HISTORY (RoB) [10/2023 - ]