DTC B1793-12: Load Sensor for Occupant Detection System Circuit Short to Battery [12/2024 - ]: Procedure

CHECK CONNECTION OF CONNECTORS

Pre-procedure1

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 ECU assembly and front seat adjuster assembly RH.

The connectors are properly connected.

Result

Proceed to
OK
NG

Post-procedure1

Result:

CONNECT CONNECTORS PROPERLY

Result:

See step 2

CHECK CONNECTORS

Pre-procedure1

Disconnect the airbag ECU assembly connector.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*1	Front Seat Adjuster Assembly RH
*2	Airbag ECU Assembly
*3	Wire Harness

Check that the terminals of the connectors are not deformed or damaged.

The terminals are not deformed or damaged.

Result

Proceed to
OK
NG

Post-procedure1

Result:

REPAIR OR REPLACE HARNESS OR CONNECTOR

Result:

See step 3

CHECK HARNESS AND CONNECTOR (AIRBAG ECU ASSEMBLY - FRONT SEAT ADJUSTER ASSEMBLY RH)

Pre-procedure1

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

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

*1	Front Seat Adjuster Assembly RH
*2	Airbag ECU Assembly
*3	Wire Harness
*a	Front view of wire harness connector (to Airbag ECU Assembly)
*b	Front view of wire harness connector (to Front Seat Adjuster Assembly RH (Front Occupant Classification Sensor LH))
*c	Front view of wire harness connector (to Front Seat Adjuster Assembly RH (Rear Occupant Classification Sensor LH))

Standard Voltage

Tester Connection	Condition	Specified Condition	Result
S3-24 (SVC) - Body ground	Ignition switch ON	Below 1 V	V
e10-1 (SVC1) - Body ground	Ignition switch ON	Below 1 V	V
e11-1 (SVC3) - Body ground	Ignition switch ON	Below 1 V	V

Result

Proceed to
OK
NG

Post-procedure1

Result:

REPLACE AIRBAG ECU ASSEMBLY

Result:

REPAIR OR REPLACE HARNESS OR CONNECTOR