Inspection Procedure

HINT:

Skip the following steps if side and curtain shield airbags are not fitted.

1. Turn the ignition switch to the on position and wait for at least 60 seconds.
2. Clear the DTCs stored in the memory (See DTC CHECK / CLEAR  ).
3. Turn the ignition switch to the lock position.
4. Turn the ignition switch to the on position and wait for at least 60 seconds.
5. Check for DTCs (See DTC CHECK / CLEAR  ).

   OK: DTC B1650/32 is not output. 

   HINT:

   DTCs other than B1650/32 may be output at this time, but they are not related to this check.

Fig 1: Checking DTC (Center Airbag Sensor Assembly)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: USE SIMULATION METHOD TO CHECK 

NG: GO TO NEXT STEP 

1. Turn the ignition switch to the on position and wait for at least 10 seconds.
2. Using the Techstream, check for DTCs of the occupant classification ECU (See DATA LIST / ACTIVE TEST  ).

   OK: DTC is not output. 

NG: GO TO DTC CHART 

OK: GO TO NEXT STEP 

1. Turn the ignition switch to the lock position.
2. Disconnect the negative (-) terminal cable from the battery and wait for at least 90 seconds.
3. Check that the connectors are properly connected to the center airbag sensor assembly and the occupant classification ECU.

   OK: The connectors are properly connected. 

NG: CONNECT CONNECTORS 

OK: GO TO NEXT STEP 

1. Disconnect the connectors from the center airbag sensor assembly and the occupant classification ECU.
2. Using a service wire, connect J24-8 (FSR+) and J24-4 (FSR-) of connector C.
   NOTE: Do not forcibly insert the service wire into the terminals of the connector when connecting.
3. Measure the resistance.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   J9-12 (FSP+)-J9-13 (FSP-)	Always	Below 1 Ω

Fig 2: Checking Floor Wire (For Open)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE FLOOR WIRE 

OK: GO TO NEXT STEP 

1. Disconnect the service wire from connector C.
2. Measure the resistance.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   J9-12 (FSP+) - J9-13 (FSP-)	Always	1 MΩ or Higher

Fig 3: Checking Floor Wire (For Short)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE FLOOR WIRE 

OK: GO TO NEXT STEP 

1. Connect the negative (-) terminal cable to the battery and wait for at least 2 seconds.
2. Turn the ignition switch to the on position.
3. Measure the voltage.

   Standard voltage 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   J9-12 (FSP+)-Body ground	Ignition switch on	Below 1 V
   J9-13 (FSP-)-Body ground	Ignition switch on	Below 1 V

Fig 4: Checking Floor Wire (For Short)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE FLOOR WIRE 

OK: GO TO NEXT STEP 

1. Turn the ignition switch to the lock position.
2. Disconnect the negative (-) terminal cable from the battery and wait for at least 90 seconds.
3. Measure the resistance.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   J9-12{FSP+)-Body ground	Always	1 MΩ or Higher
   J9-13(FSP-)-Body ground	Always	1 MΩ or Higher

Fig 5: Checking Floor Wire (For Short)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE FLOOR WIRE 

OK: GO TO NEXT STEP 

1. Turn the ignition switch to the lock position.
2. Disconnect the negative (-) terminal cable from the battery and wait for at least 90 seconds.
3. Replace the center airbag sensor assembly, for Hatchback: (See CENTER AIRBAG SENSOR ASSEMBLY (FOR HATCHBACK)  ) for Sedan: (See CENTER AIRBAG SENSOR ASSEMBLY (FOR SEDAN)  )

   HINT:

   Perform the inspection using parts from a normal vehicle when possible.

4. Connect the connectors to the center airbag sensor assembly.
5. Connect the negative (-) terminal cable to the battery and wait for at least 2 seconds.
6. Turn the ignition switch to the on position and wait for at least 60 seconds.
7. Clear the DTCs stored in the memory (See DTC CHECK / CLEAR  ).
8. Turn the ignition switch to the lock position.
9. Turn the ignition switch to the on position and wait for at least 60 seconds.
10. Check for DTCs (See DTC CHECK / CLEAR  ).
    Fig 6: Checking DTC (Center Airbag Sensor Assembly)

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: DTC B1650/32 is not output. 

    HINT:

    DTCs other than B1650/32 may be output at this time, but they are not related to this check.

OK: USE SIMULATION METHOD TO CHECK 

NG: GO TO NEXT STEP 

1. Turn the ignition switch to the lock position.
2. Disconnect the negative (-) terminal cable from the battery and wait for at least 90 seconds.
3. Replace the occupant classification ECU (See ON-VEHICLE INSPECTION  ).

1. Connect the negative (-) terminal cable to the battery.
2. Connect the Techstream to the DLC3.
3. Turn the ignition switch to the on position.
4. Using the Techstream, perform the zero point calibration (See INITIALIZATION  ).

   OK: COMPLETED is displayed on the tester. 

1. Using the Techstream, perform the sensitivity check (See INITIALIZATION  ).
   1. Confirm that nothing is placed on the passenger seat.
   2. Confirm that the first sensor reading is within the standard range.

      Standard range: 

      -3.2 to 3.2 kg (-7 to 7 lb) 

   3. Place a 30 kg (66.14 lb) weight (e.g. a lead mass) onto the front passenger seat.
   4. Confirm that the sensitivity is within the standard range.

      Standard range: 

      27 to 33 kg (59.52 to 72.75 lb) 

      HINT:

      When performing the sensitivity check, use a solid metal weight (the check result may not be accurate if a liquid weight is used).