DTC B0090-83: Left Frontal Restraints Sensor Value of Signal Protection Calculation Incorrect [11/2021 - 10/2023]: Procedure

Pre-procedure1

1. Turn the power switch on (IG), and wait for at least 60 seconds.

   Procedure1

2. Check for DTCs.

   Body Electrical > SRS Airbag > Trouble Codes 

   Result

   Result	Proceed to
   B0090-83 is output	A
   B0090-83 is not output	B

   Post-procedure1

3. None

Result: 

B 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - 10/2022]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - 10/2023] 

Result: 

A 

See step  2

Pre-procedure1

1. Turn the power switch off.
2. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.

   Procedure1

3. Check that the connectors are properly connected to the airbag ECU assembly and front airbag sensor LH.

   OK

   The connectors are properly connected.

   Result

   Proceed to
   OK
   NG

   Post-procedure1

4. None

Result: 

NG 

CONNECT CONNECTORS PROPERLY 

Result: 

OK 

See step  3

1. Interchange the front airbag sensor LH with RH and connect the connectors.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *1	Front Airbag Sensor RH
   *2	Airbag ECU Assembly
   *3	Wire Harness

2. Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds.
3. Turn the power switch on (IG), and wait for at least 60 seconds.
4. Clear the DTCs stored in memory.

   Body Electrical > SRS Airbag > Clear DTCs 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  4

Pre-procedure1

1. Turn the power switch off.
2. Turn the power switch on (IG), and wait for at least 60 seconds.

   Procedure1

3. Check for DTCs.

   Body Electrical > SRS Airbag > Trouble Codes 

   Result

   Result	Proceed to
   B0090-83 is output	A
   B0095-83 is output	B

   Post-procedure1

4. Turn the power switch off.
5. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.
6. Return the front airbag sensor RH and LH to their original positions and connect the connectors.

Result: 

A 

REPLACE AIRBAG ECU ASSEMBLY. Refer to  REMOVAL [11/2021 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023] 

Result: 

B 

REPLACE FRONT AIRBAG SENSOR LH. Refer to  REMOVAL [11/2021 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023]