Inspection Procedure

WARNING: This page is about a different car, the 2008 Toyota Yaris. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: In order to prevent unexpected airbag deployment, disconnect the following connectors before inspecting parts such as wire harnesses, if the application of tester probes to the center airbag sensor assembly connector is necessary.

Turn the ignition switch to the lock position.
Disconnect the negative (-) terminal cable from the battery and wait for at least 90 seconds.
Disconnect the connector from the center airbag sensor assembly.
Disconnect the connectors from the steering pad.
Disconnect the connectors from the front passenger airbag assembly.
Disconnect the connector from the front seat outer belt assembly LH.
Disconnect the connector from the front seat outer belt assembly RH.
HINT:

Skip the following steps if side and curtain shield airbags are not fitted.
Disconnect the connector from the front seat side airbag assembly LH.
Disconnect the connector from the front seat side airbag assembly RH.
Disconnect the connector from the curtain shield airbag assembly LH.
Disconnect the connector from the curtain shield airbag assembly RH.

CHECK DTC
1. Turn the ignition switch on and wait for at least 60 seconds.
2. Clear the DTCs stored in the memory (See DTC CHECK / CLEAR ).
3. Turn the ignition switch off.
4. Turn the ignition switch on and wait for at least 60 seconds.
5. Check the DTCs (See DTC CHECK / CLEAR ).
  OK: DTC B1655/37 is not output.
  
  HINT:
  
  DTCs other than DTC B1655/37 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
CHECK CONNECTION OF CONNECTORS
1. Turn the ignition switch off.
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 front seat inner belt assembly LH.
  OK: The connectors are properly connected.
NG: CONNECT CONNECTORS

OK: GO TO NEXT STEP

CHECK FLOOR WIRE (FOR OPEN)

Disconnect the connectors from the center airbag sensor assembly and the front seat inner belt assembly LH.
Using a service wire, connect J8-11 (DBE+) and J8-12 (DBE-) of connector B.
NOTE: Do not forcibly insert the service wire into the terminals of the connector when connecting.

Measure the resistance.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
J10-4 (LBE+) - J10-3 (LBE-)	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

CHECK FLOOR WIRE (FOR GROUND)

Disconnect the service wire from connector B.

Measure the resistance.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
J10-4 (LBE+) - J10-3 (LBE-)	Always	1 MΩ or higher

Fig 3: Checking Floor Wire (For Ground)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE FLOOR WIRE

OK: GO TO NEXT STEP

CHECK FLOOR WIRE (TO B+)

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

Measure the voltage.

Standard voltage

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
J10-4 (LBE+)-Body ground	ignition switch on	Below 1 V
J10-3 (LBE-)-Body ground	ignition switch on	Below 1 V

Fig 4: Checking Floor Wire (For Ground)

NG: REPAIR OR REPLACE FLOOR WIRE

OK: GO TO NEXT STEP

CHECK FLOOR WIRE (TO GROUND)

Turn the ignition switch off.
Disconnect the negative (-) terminal cable from the battery and wait for at least 90 seconds.

Measure the resistance.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
J10-4 (LBE+)-Body ground	Always	1 MΩ or higher
J10-3 (LBE-)-Body ground	Always	1 MΩ or higher

Fig 5: Checking Floor Wire (For Ground)

NG: REPAIR OR REPLACE FLOOR WIRE

OK: GO TO NEXT STEP

CHECK FRONT SEAT INNER BELT ASSEMBLY LH
1. Connect the connector to the center airbag sensor assembly and the front seat inner belt assembly LH.
2. Connect the negative (-) terminal cable to the battery and wait for at least 2 seconds.
3. Turn the ignition switch on and wait for at least 60 seconds.
4. Clear the DTCs stored in the memory (See DTC CHECK / CLEAR ).
5. Turn the ignition switch off.
6. Turn the ignition switch on and wait for at least 60 seconds.
7. Check the DTCs (See DTC CHECK / CLEAR ).
  OK: DTC B1655/37 is not output.
  
  HINT:
  
  DTCs other than DTC B1655/37 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
REPLACE FRONT SEAT INNER BELT ASSEMBLY LH
1. Turn the ignition switch off.
2. Disconnect the negative (-) terminal cable from the battery and wait for at least 90 seconds.
3. Replace the front seat inner belt assembly LH.
  for Hatchback: (See REMOVAL )
  
  for Sedan: (See REMOVAL )
  
  HINT:
  
  Perform the inspection using parts from a normal vehicle if possible.
CHECK CENTER AIRBAG SENSOR ASSEMBLY
1. Connect the negative (-) terminal cable to the battery and wait for at least 2 seconds.
2. Turn the ignition switch on and wait for at least 60 seconds.
3. Clear the DTCs stored in the memory (See DTC CHECK / CLEAR ).
4. Turn the ignition switch off.
5. Turn the ignition switch on and wait for at least 60 seconds.
6. Check the DTCs (See DTC CHECK / CLEAR ).
  OK: DTC B1655/37 is not output.
  
  HINT:
  
  DTCs other than DTC B1655/37 may be output at this time, but they are not related to this check.
NG: REPLACE CENTER AIRBAG SENSOR ASSEMBLY

OK: END