DTC B00B5-12: Driver Seat Track Position Restraints Sensor Circuit Short to Battery [07/2020 - ]: Procedure

CHECK CONNECTION OF CONNECTORS

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

Check that the connectors are properly connected to the airbag sensor assembly and seat position sensor (front seat adjuster assembly LH).

Result

Proceed to
Connectors are properly connected
Connectors are not properly connected

Result:

Connectors are not properly connected

CONNECT CONNECTORS PROPERLY

Result:

Connectors are properly connected

See step 2

CHECK CONNECTORS

Disconnect the airbag sensor assembly connector.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*1	Seat Position Sensor (Front Seat Adjuster Assembly LH)
*2	Airbag Sensor Assembly
*3	Wire Harness

Disconnect the seat position sensor connector.

Check that the connectors (on the airbag sensor assembly side and seat position sensor (front seat adjuster assembly LH) side) are not damaged.

Result

Proceed to
Connectors are not deformed or damaged
Connectors are deformed or damaged

Result:

Connectors are deformed or damaged

REPAIR OR REPLACE HARNESS OR CONNECTOR

Result:

Connectors are not deformed or damaged

See step 3

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

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

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Turn the ignition switch to ON.

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

Standard Voltage

Tester Connection	Condition	Specified Condition
U24-1 (GND) - Body ground	Ignition switch ON	Below 1 V
U24-2 (VS) - Body ground	Ignition switch ON	Below 1 V

Turn the ignition switch off.

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

Result

Proceed to
OK
NG

Result:

REPAIR OR REPLACE HARNESS OR CONNECTOR

Result:

See step 4

CHECK DTC

Connect the airbag sensor assembly connector.

*1	Seat Position Sensor (Front Seat Adjuster Assembly LH)
*2	Airbag Sensor Assembly
*3	Wire Harness

Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds.
Turn the ignition switch to ON, and wait for at least 60 seconds.
Clear the DTCs stored in memory.
Body Electrical > SRS Airbag > Clear DTCs
Turn the ignition switch off.
Turn the ignition switch to ON, and wait for at least 60 seconds.

Check for DTCs.

Body Electrical > SRS Airbag > Trouble Codes

Result

Proceed to
DTC B00B5-12 is output
DTC B00B5-12 is not output

HINT:

Codes other than DTC B00B5-12 may be output at this time, but they are not related to this check.

Result:

DTC B00B5-12 is output

REPLACE AIRBAG SENSOR ASSEMBLY. Refer to REMOVAL [07/2020 - 10/2022] , or refer to REMOVAL [10/2022 - ]

Result:

DTC B00B5-12 is not output

REPLACE SEAT POSITION SENSOR (FRONT SEAT ADJUSTER ASSEMBLY LH). Refer to REMOVAL [07/2020 - 10/2022] , or refer to REMOVAL [10/2022 - ]