Inspection Procedure

WARNING: This page is about a different car, the 2007 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 intelligent tester (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)
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.
4. Connect the white wire side of SST (resistance 2.1 Ω) to connector E.
  CAUTION: Never connect a tester to the steering pad (driver side 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.
  SST 09843-18060
5. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
6. Turn the ignition switch on (IG), 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 B1800, B1801, B1802, B1803 or 51 is not output.

Fig 1: Checking Steering Pad (Driver Side Squib)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

DTCs other than DTC B1800, B1801, B1802, B1803 or 51 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 connectors (on the steering pad side) are 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 CIRCUIT

Disconnect the connectors from the center airbag sensor.
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 AND SPECIFIED CONDITION

Tester Connection	Specified Condition
D+ - Body ground	Below 1 V
D- - 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.

Fig 2: Checking Driver Side Squib Circuit

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard resistance

TESTER CONNECTION AND SPECIFIED CONDITION

Tester Connection	Specified Condition
D+ - D-	Below 1 Ω
D+ - Body ground	1 MΩ or higher
D- - 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 AND SPECIFIED CONDITION

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

OK: REPLACE CENTER AIRBAG SENSOR ASSEMBLY

NG: 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.
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 AND SPECIFIED CONDITION

Tester Connection	Specified Condition
E8-1 (D+) - Body ground	Below 1 V
E8-2 (D-) - 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 AND SPECIFIED CONDITION

Tester Connection	Specified Condition
E8-1 (D+) - E8-2 (D-)	Below 1 Ω
E8-1 (D+) - Body ground	1 MΩ or higher
E8-2 (D-) - Body ground	1 MΩ or higher

Fig 3: Checking Instrument Panel Wire

Release the activation prevention mechanism built into connector B (see CHECK MODE PROCEDURE ).

Measure the resistance of the wire harness side connector.

Standard resistance

TESTER CONNECTION AND SPECIFIED CONDITION

Tester Connection	Specified Condition
E8-1 (D+) - E8-2 (D-)	1 MΩ or higher

NG: REPAIR OR REPLACE INSTRUMENT PANEL WIRE

OK: REPLACE SPIRAL CABLE