SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM (for TMMMS Made): B166B,B166C,B166F; Front Door Pressure Sensor RH Circuit Range/Performance; 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022

Last Modified: 05-13-2024	6.11:8.1.0	Doc ID: RM100000002779G
Model Year Start: 2023	Model: GR Corolla	Prod Date Range: [09/2022 - 11/2022]
Title: SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM (for TMMMS Made): B166B,B166C,B166F; Front Door Pressure Sensor RH Circuit Range/Performance; 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022]

DTC

B166B

Front Door Pressure Sensor RH Circuit Range/Performance

DTC

B166C

Front Door Pressure Sensor RH

DTC

B166F

Front Door Pressure Sensor Threshold Malfunction (RH)

DESCRIPTION

The side collision sensor RH circuit (bus 1) consists of the airbag sensor assembly, side airbag pressure sensor RH and side No. 2 airbag sensor RH.

The side airbag pressure sensor RH and side No. 2 airbag sensor RH detect impacts to the vehicle and send signals to the airbag sensor assembly to determine if the airbags and pretensioners should be deployed.

These DTCs are stored when a malfunction is detected in the side airbag pressure sensor RH.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Warning Indicate	Test Mode / Check Mode
B166B	Front Door Pressure Sensor RH Circuit Range/Performance	Side airbag pressure sensor RH malfunction Airbag sensor assembly malfunction	Side airbag pressure sensor RH Airbag sensor assembly	Comes on	Does not apply to test/check mode
B166C	Front Door Pressure Sensor RH	Side airbag pressure sensor RH malfunction Airbag sensor assembly malfunction	Side airbag pressure sensor RH Airbag sensor assembly	Comes on	Does not apply to test/check mode
B166F	Front Door Pressure Sensor Threshold Malfunction (RH)	Side airbag pressure sensor RH malfunction Airbag sensor assembly malfunction	Side airbag pressure sensor RH Airbag sensor assembly	Comes on	Does not apply to test/check mode

WIRING DIAGRAM

Click here

CAUTION / NOTICE / HINT

NOTICE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.
Click here

HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

PROCEDURE

1.	CHECK SIDE AIRBAG PRESSURE SENSOR RH

(a) Turn the ignition switch off.

*1	Side Airbag Pressure Sensor LH
*2	Side No. 2 Airbag Sensor RH

(b) Disconnect the cable from the negative (-) battery terminal.

CAUTION:

Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

(d) Connect the cable to the negative (-) battery terminal.

(e) Turn the ignition switch to ON, and wait for at least 60 seconds.

(f) Clear the DTCs stored in memory.

Body Electrical > SRS Airbag > Clear DTCs

(g) Turn the ignition switch off.

(h) Turn the ignition switch to ON, and wait for at least 60 seconds.

(i) Check for DTCs.

Body Electrical > SRS Airbag > Trouble Codes

HINT:

Codes other than DTCs B166B, B166C, B166F, B167A, B167E and B167F may be output at this time, but they are not related to this check.

Result	Proceed to
DTC B166B, B166C or B166F is output.	A
DTC B167A, B167E or B167F is output.	B
DTCs B166B, B166C, B166F, B167A, B167E and B167F are not output.	C

(j) Turn the ignition switch off.

(k) Disconnect the cable from the negative (-) battery terminal.

CAUTION:

Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

(l) Return the side airbag pressure sensor RH and LH to their original positions and connect the connectors.

REPLACE AIRBAG SENSOR ASSEMBLY

REPLACE SIDE AIRBAG PRESSURE SENSOR RH

USE SIMULATION METHOD TO CHECK