SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: B009087; Left Frontal Restraints Sensor Missing Message; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022

Last Modified: 07-31-2024	6.11:8.1.0	Doc ID: RM10000000289UE
Model Year Start: 2023	Model: GR Corolla	Prod Date Range: [11/2022 - ]
Title: SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: B009087; Left Frontal Restraints Sensor Missing Message; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 - ]

DTC

B009087

Left Frontal Restraints Sensor Missing Message

DESCRIPTION

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Warning Indicate	DTC Output from	Priority	Test Mode / Check Mode
B009087	Left Frontal Restraints Sensor Missing Message	The airbag sensor assembly detects a line short circuit signal, open circuit signal, short circuit to ground signal or short circuit to +B signal in the front airbag sensor LH circuit for 2 seconds. Front airbag sensor LH malfunction Airbag sensor assembly malfunction	Harness or connector Front airbag sensor LH Airbag sensor assembly	Comes on	SRS Airbag	A	Does not apply to test/check mode

WIRING DIAGRAM

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
After replacing the airbag sensor assembly, refer to work procedure.
Click here

PROCEDURE

1.	CHECK CONNECTION OF CONNECTORS

Pre-procedure1

(a) Turn the ignition switch off.

(b) Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.

Procedure1

OK:

The connectors are properly connected.

Post-procedure1

(d) None

CONNECT CONNECTORS PROPERLY

2.	CHECK CONNECTORS

Pre-procedure1

(a) Disconnect the airbag sensor assembly connector.

*1	Front Airbag Sensor LH
*2	Airbag Sensor Assembly
*3	Wire Harness

(b) Disconnect the front airbag sensor LH connector.

Procedure1

OK:

The terminals are not deformed or damaged.

Post-procedure1

(d) None

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.	CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT IN THE CIRCUIT)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
A7-2 (+SL) - A7-1 (-SL)	Always	1 MΩ or higher

Result:

Proceed to
OK
NG

*1	Front Airbag Sensor LH
*2	Airbag Sensor Assembly
*3	Wire Harness
*a	Front view of wire harness connector (to Front Airbag Sensor LH)

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.	CHECK HARNESS AND CONNECTOR (CHECK FOR OPEN IN THE CIRCUIT)

Pre-procedure1

(a) Using a service wire, connect terminals 30 (+SL) and 31 (-SL) of connector B.

NOTICE:

Do not forcibly insert the service wire into the terminals of the connector when connecting a service wire.

*1	Front Airbag Sensor LH
*2	Airbag Sensor Assembly
*3	Wire Harness
*4	Service Wire
*a	Front view of wire harness connector (to Front Airbag Sensor LH)
*b	Front view of wire harness connector (to Airbag Sensor Assembly)

Procedure1

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
A7-2 (+SL) - A7-1 (-SL)	Always	Below 1 Ω

Post-procedure1

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.	CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT TO GROUND IN THE CIRCUIT)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
A7-2 (+SL) - Body ground	Always	1 MΩ or higher
A7-1 (-SL) - Body ground	Always	1 MΩ or higher

*1	Front Airbag Sensor LH
*2	Airbag Sensor Assembly
*3	Wire Harness
*a	Front view of wire harness connector (to Front Airbag Sensor LH)

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.	CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT TO +B IN THE CIRCUIT)

Pre-procedure1

(a) Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds.

(b) Turn the ignition switch to ON.

Procedure1

Standard Voltage:

Tester Connection	Condition	Specified Condition
A7-2 (+SL) - Body ground	Ignition switch ON	Below 1 V
A7-1 (-SL) - Body ground	Ignition switch ON	Below 1 V

Result:

Proceed to
OK
NG

*1	Front Airbag Sensor LH
*2	Airbag Sensor Assembly
*3	Wire Harness
*a	Front view of wire harness connector (to Front Airbag Sensor LH)

Post-procedure1

(d) Turn the ignition switch off.

(e) Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.

REPAIR OR REPLACE HARNESS OR CONNECTOR

CLEAR DTC

Pre-procedure1

(a) Connect the airbag sensor assembly connector.

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

(b) Interchange the front airbag sensor LH with RH and connect the connectors to them.

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

Procedure1

(e) Clear the DTCs stored in memory.

Body Electrical > SRS Airbag > Clear DTCs

Post-procedure1

(f) Turn the ignition switch off.

8.	CHECK FRONT AIRBAG SENSOR LH

Pre-procedure1

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

Procedure1

(b) Check for DTCs.

Body Electrical > SRS Airbag > Trouble Codes

Result	Proceed to
B009087 is output	A
B009587 is output	B
B009087 and B009587 are not output	C

HINT:

Codes other than DTCs B009087 and B009587 may be output at this time, but they are not related to this check.

Post-procedure1

(d) Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.

(e) Return the front airbag sensor RH and LH to their original positions and connect the connectors to them.

REPLACE AIRBAG SENSOR ASSEMBLY

REPLACE FRONT AIRBAG SENSOR LH

USE SIMULATION METHOD TO CHECK