DTC B1793-12: Load Sensor for Occupant Detection System Circuit Short to Battery [11/2021 - ]: Procedure

1. Turn the ignition switch off.
2. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.
3. Check that the connectors are properly connected to the airbag sensor assembly and front seat adjuster assembly RH.

   OK

   The connectors are properly connected.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

CONNECT CONNECTORS PROPERLY 

Result: 

OK 

See step  2

1. Disconnect the airbag sensor assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

2. Disconnect the front seat adjuster assembly RH connector.
3. Check that the terminals of the connectors are not deformed or damaged.

   OK

   The terminals are not deformed or damaged.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

2. Turn the ignition switch to ON.
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   G22-24 (SVC) - Body ground	Ignition switch ON	Below 1 V
   R8-1 - Body ground	Ignition switch ON	Below 1 V
   R9-1 - Body ground	Ignition switch ON	Below 1 V

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE AIRBAG SENSOR ASSEMBLY. Refer to  REMOVAL [11/2021 - 03/2024]  , or refer to  REMOVAL [03/2024 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR