DTC B0090-84: Left Frontal Restraints Sensor Signal Below Allowable Range [11/2021 - 10/2023]: Procedure

1. Turn the power switch off.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

2. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.
3. Interchange the front airbag sensor LH with RH and connect the connectors.
4. Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds.
5. Turn the power switch on (IG), and wait for at least 60 seconds.
6. Clear the DTCs stored in memory.

   Body Electrical > SRS Airbag > Clear DTCs 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  2

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
   B0090-84 is output	A
   B0095-84 is output	B
   B0090-84 and B0095-84 are not output	C

   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 to them.

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] 

Result: 

C 

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]