Inspection Procedure

WARNING: This page is about a different car, the 2008 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

Perform the simulation method by selecting the "CHECK MODE" (signal check) with the Techstream (see CHECK MODE PROCEDURE ).
After selecting the "CHECK MODE" (signal check), perform the simulation method by wiggling each connector of the airbag system or driving the vehicle on a city or rough road (see CHECK MODE PROCEDURE ).

CHECK STEERING PAD (DRIVER SIDE SQUIB 2ND STEP)
1. Turn the ignition switch OFF.
2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
3. Disconnect the connectors from the steering pad.
  
  Fig 1: Identifying Steering Pad (Driver Side Squib 2nd Step)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Connect SST (resistance 2.1 Ω) to connector E.
  CAUTION: Never connect a tester to the steering pad (driver side squib 2nd step) 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.
  SST 09843-18061
5. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
6. Turn the ignition switch ON, and wait for at least 60 seconds.
7. Clear the DTCs (see DTC CHECK / CLEAR ).
8. Turn the ignition switch OFF.
9. Turn the ignition switch ON, and wait for at least 60 seconds.
10. Check the DTCs (see DTC CHECK / CLEAR ).
  OK:
  
  DTC B1810, B1811, B1812, B1813 or 53 is not output.
  
  HINT:
  
  DTCs other than DTC B1810, B1811, B1812, B1813 or 53 may be output at this time, but they are not related to this check.
OK: REPLACE STEERING PAD

NG: Go to next step
CHECK CONNECTOR
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 E.
4. Check that the spiral cable connector (on the steering pad side) is not damaged.
  OK:
  
  Lock button is not disengaged, and claw of lock is not deformed or damaged.
NG: REPLACE SPIRAL CABLE

OK: Go to next step

CHECK DRIVER SIDE SQUIB 2ND STEP CIRCUIT

Disconnect the connector from the center airbag sensor.

Fig 2: Identifying Driver Side Squib 2nd Step Circuit
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
Turn the ignition switch ON.

Measure the voltage of the wire harness side connector.

Standard voltage

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Specified Condition
D2+ - Body ground	Below 1 V
D2- - Body ground	Below 1 V

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

Measure the resistance of the wire harness side connector.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Specified Condition
D2+ - D2-	Below 1 Ω
D2+ - Body ground	1 MΩ or higher
D2- - Body ground	1 MΩ or higher

Release the activation prevention mechanism built into connector B (see DIAGNOSIS SYSTEM ).

Measure the resistance of the wire harness side connector.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Specified Condition
D2+ - D2-	1 MΩ or higher

OK: REPLACE CENTER AIRBAG SENSOR ASSEMBLY

OK: Go to next step

CHECK INSTRUMENT PANEL WIRE

Restore the released activation prevention mechanism of connector B to its original position.
Disconnect the instrument panel wire connector from the spiral cable.

Fig 3: Identifying Instrument Panel Wire
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
Turn the ignition switch ON.

Measure the voltage of the wire harness side connector.

Standard voltage

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Specified Condition
E8-4 (D2+) - Body ground	Below 1 V
E8-3 (D2-) - Body ground	Below 1 V

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

Measure the resistance of the wire harness side connector.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Specified Condition
E8-4 (D2+) - E8-3 (D2-)	Below 1 Ω
E8-4 (D2+) - Body ground	1 MΩ or higher
E8-3 (D2-) - Body ground	1 MΩ or higher

Release the activation prevention mechanism built into connector B (see DIAGNOSIS SYSTEM ).

Measure the resistance of the wire harness side connector.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Specified Condition
E8-4 (D2+) - E8-3 (D2-)	1 MΩ or higher

NG: REPAIR OR REPLACE INSTRUMENT PANEL WIRE

OK: REPLACE SPIRAL CABLE