Inspection Procedure

WARNING: This page is about a different car, the 2006 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

CHECK WIRE HARNESS (TO GROUND)
1. Turn the ignition switch to LOCK.
2. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
3. Measure the resistance between the body ground and LBE+ of the connector on the center airbag sensor side between the front seat inner belt LH (seat belt buckle switch LH) and the center airbag sensor.
  Standard resistance: 1 MΩ or higher
NG: Go to step 6

Fig 1: Checking Wire Harness (To Ground)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: GO TO NEXT STEP
CHECK WIRE HARNESS (TO +B)
1. Connect the negative (-) terminal cable to the battery, and wait at least for 2 seconds.
2. Turn the ignition switch to ON.
3. Measure the voltage between the body ground and LBE+ of the connector on the center airbag sensor side between the front seat inner belt LH (seat belt buckle switch LH) and the center airbag sensor.
  Standard voltage: Below 1 V
NG: Go to step 7

Fig 2: Checking Wire Harness (To +B)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: GO TO NEXT STEP
CHECK FRONT SEAT INNER BELT ASSEMBLY LH
1. Connect the connector of the front seat inner belt LH (seat belt buckle switch LH).
2. Unlock the seat belt for the driver's seat.
3. Measure the resistance between the body ground and LBE+ of the connector on the center airbag sensor side between the front seat inner belt LH (seat belt buckle switch LH) and the center airbag sensor.
  Standard resistance: 1 kΩ to 1.6 kΩ
NG: REPLACE FRONT SEAT INNER BELT ASSEMBLY LH

Fig 3: Checking Front Seat Inner Belt Assembly LH
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: GO TO NEXT STEP
CHECK FRONT SEAT INNER BELT ASSEMBLY LH
1. Lock the seat belt for the driver's seat.
2. Measure the resistance between the body ground and LBE+ of the connector on the center airbag sensor side between the front seat inner belt LH (seat belt buckle switch LH) and the center airbag sensor.
  Standard resistance: 100 Ω to 500 Ω
NG: REPLACE FRONT SEAT INNER BELT ASSEMBLY LH

Fig 4: Checking Front Seat Inner Belt Assembly LH
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: GO TO NEXT STEP
CHECK CENTER AIRBAG SENSOR ASSEMBLY
1. Turn the ignition switch to LOCK.
2. Disconnect the negative (-) terminal cable from the battery, and wait at least for 90 seconds.
3. Connect the connector to the center airbag sensor.
4. Connect the negative (-) terminal cable to the battery, and wait at least for 2 seconds.
5. Turn the ignition switch to ON, and wait at least for 10 seconds.
6. Clear the DTC stored in memory (see DTC CHECK/CLEAR ).
7. Turn the ignition switch to LOCK, and wait at least for 10 seconds.
8. Turn the ignition switch to ON, and wait at least for 10 seconds.
9. Check the DTC (see DTC CHECK/CLEAR ).
  OK: DTC B0126/B0127/27 is not output.
NG: REPLACE CENTER AIRBAG SENSOR ASSEMBLY

Fig 5: Identifying DLC3 Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: USE SIMULATION METHOD TO CHECK
CHECK FRONT SEAT WIRE LH (TO GROUND)
1. Disconnect the front seat wire LH connector from the No. 1 floor wire.
2. Measure the resistance between the body ground and LBE+ of the front seat wire LH connector on the No. 1 floor wire side.
  Standard resistance: 1 MΩ or higher
NG: REPAIR OR REPLACE FRONT SEAT WIRE LH

Fig 6: Checking Front Seat Wire LH (To Ground)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: REPAIR OR REPLACE NO. 1 FLOOR WIRE
CHECK FRONT SEAT WIRE LH (TO +B)
1. Turn the ignition switch to LOCK.
2. Disconnect the negative (-) terminal cable from the battery, and wait at least for 90 seconds.
3. Disconnect the front seat wire LH connector from the No. 1 floor wire.
4. Connect the negative (-) terminal cable to the battery, and wait at least for 2 seconds.
5. Turn the ignition switch to ON.
6. Measure the voltage between the body ground and LBE+ of the front seat wire LH connector on the No. 1 floor wire side.
  Standard voltage: Below 1 V
NG: REPAIR OR REPLACE FRONT SEAT WIRE LH

Fig 7: Checking Front Seat Wire LH (To +B)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: REPAIR OR REPLACE NO. 1 FLOOR WIRE