DTC B1865/65: Short in Front Passenger Side Knee Airbag Squib Circuit; DTC B1866/65: Open in Front Passenger Side Knee Airbag Squib Circuit; DTC B1867/65: Short to GND in Front Passenger Side Knee Airbag Squib Circuit; DTC B1868/65: Short to B+ in Front Passenger Side Knee Airbag Squib Circuit [08/2014 - ]: Procedure

1. Turn the ignition switch off.
2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
3. Check that the connector is properly connected to the front passenger side knee airbag assembly.

   OK

   The connector is properly connected.

   HINT: 

   If the connector is not connected securely, reconnect the connector and proceed to the next inspection.

4. Disconnect the connector from the front passenger side knee airbag assembly.
5. Check that the instrument panel wire connector (on the front passenger side knee airbag assembly side) is not damaged.

   OK

   The lock button is not disengaged, and the claw of the lock is not deformed or damaged.

NG → REPLACE INSTRUMENT PANEL WIRE 

OK: Go to next step 

• SST: 09843-18061 

1. Connect SST (resistance 2.1 Ω) to connector C.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   WARNING:

   Never connect a tester to the front passenger side knee airbag assembly (front passenger side knee airbag squib) for measurement, as this may lead to a serious injury due to airbag deployment.

   NOTE:

   • Do not forcibly insert SST into the terminals of the connector when connecting.
   • Insert SST straight into the terminals of the connector.
2. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
3. Turn the ignition switch to ON, and wait for at least 60 seconds.
4. Clear the DTCs stored in the memory. Refer to DTC CHECK / CLEAR [08/2014 - ] .
5. Turn the ignition switch off.
6. Turn the ignition switch to ON, and wait for at least 60 seconds.
7. Check the DTCs. Refer to DTC CHECK / CLEAR [08/2014 - ] .

   OK

   DTC B1865, B1866, B1867, B1868 or 65 is not output.

   TEXT IN ILLUSTRATION
   
   

   *1	Front Passenger Side Knee Airbag Squib
   *2	Center Airbag Sensor Assembly
   *3	Connector C
   *a	Front view of wire harness connector (to Front Passenger Side Knee Airbag Squib)

   HINT: 

   DTCs other than B1865, B1866, B1867, B1868 and 65 may be output at this time, but they are not related to this check.

NG → See step   3 

OK → See step   7 

1. Turn the ignition switch off.
2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
3. Disconnect SST from connector C.
4. Check that the connector is properly connected to the center airbag sensor assembly.

   OK

   The connector is properly connected.

   HINT: 

   If the connector is not connected securely, reconnect the connector and proceed to the next inspection.

5. Disconnect the connector from the center airbag sensor assembly.
6. Check that the terminal of the connector is not damaged.

   OK

   The terminal is not deformed or damaged.

7. Check that the short spring for the instrument panel wire connector with the activation prevention mechanism is not deformed or damaged.

   OK

   The short spring is not deformed or damaged.

NG → REPLACE INSTRUMENT PANEL WIRE 

OK: Go to next step 

1. Disconnect the connectors from the center airbag sensor assembly.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
3. Turn the ignition switch to ON.
4. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   D86-1 (PK-) - Body ground	Ignition switch ON	Below 1 V
   D86-2 (PK+) - Body ground	Ignition switch ON	Below 1 V

   TEXT IN ILLUSTRATION
   
   

   *1	Front Passenger Side Knee Airbag Squib
   *2	Instrument Panel Wire
   *3	Center Airbag Sensor Assembly
   *4	Connector C
   *a	Front view of wire harness connector (to Front Passenger Side Knee Airbag Squib)

5. Turn the ignition switch off.
6. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
7. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D86-1 (PK-) - D86-2 (PK+)	Always	Below 1 Ω

8. Release the activation prevention mechanism built into connector B. Refer to DIAGNOSIS SYSTEM [08/2014 - ] .
9. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D86-1 (PK-) - D86-2 (PK+)	Always	1 MΩ or higher
   D86-1 (PK-) - Body ground	Always	1 MΩ or higher
   D86-2 (PK+) - Body ground	Always	1 MΩ or higher

10. Restore the released activation prevention mechanism of connector B to the original condition.

NG → REPLACE INSTRUMENT PANEL WIRE 

OK: Go to next step 

1. Connect the connectors to the front passenger side knee airbag assembly and the center airbag sensor assembly.
2. Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
3. Turn the ignition switch to ON, and wait for at least 60 seconds.
4. Clear the DTCs stored in the memory. Refer to DTC CHECK / CLEAR [08/2014 - ] .
5. Turn the ignition switch off.
6. Turn the ignition switch to ON, and wait for at least 60 seconds.
7. Check the DTCs. Refer to DTC CHECK / CLEAR [08/2014 - ] .

   OK

   DTC B1865, B1866, B1867, B1868 and 65 is not output.

   HINT: 

   DTCs other than B1865, B1866, B1867, B1868 or 65 may be output at this time, but they are not related to this check.

NG → See step   8 

OK → See step   6