CHECK STEERING PAD (DRIVER SIDE SQUIB 2ND STEP)
CHECK DRIVER SIDE SQUIB 2ND STEP CIRCUIT
DTC B1810/53 Short in Driver Side Squib 2nd Step Circuit |
DTC B1811/53 Open in Driver Side Squib 2nd Step Circuit |
DTC B1812/53 Short to GND in Driver Side Squib 2nd Step Circuit |
DTC B1813/53 Short to B+ in Driver Side Squib 2nd Step Circuit |
DESCRIPTION
The driver side squib 2nd step circuit consists of the center airbag sensor, the spiral cable and the steering pad.The circuit instructs the SRS to deploy when the deployment conditions are met.
These DTCs are recorded when a malfunction is detected in the driver side squib 2nd step circuit.
| DTC No. | DTC Detection Condition | Trouble Area |
| B1810/53 | Center airbag sensor receives a line short signal 5 times in the driver side squib 2nd step circuit during primary check. |
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| B1811/53 | Center airbag sensor receives an open signal in the driver side squib 2nd step circuit for 2 seconds. |
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| B1812/53 | Center airbag sensor receives a short circuit to ground signal in the driver side 2nd step circuit for 0.5 seconds. |
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| B1813/53 | Center airbag sensor receives a short circuit to B+ signal in the driver side squib 2nd step circuit for 0.5 seconds. |
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WIRING DIAGRAM
INSPECTION PROCEDURE
- HINT:
- Perform the simulation method by selecting the "Check Mode" (signal check) with the intelligent tester (RAV4_ACA30 RM000000XFF05JX.html).
- 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 (RAV4_ACA30 RM000000XFF05JX.html).
| 1.CHECK STEERING PAD (DRIVER SIDE SQUIB 2ND STEP) |
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Turn the ignition switch off.
Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
Disconnect the connectors from the steering pad.
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.
- NOTICE:
- 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
Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
Turn the ignition switch on (IG), and wait for at least 60 seconds.
Clear the DTCs (RAV4_ACA30 RM000000XFE06SX.html).
Turn the ignition switch off.
Turn the ignition switch on (IG), and wait for at least 60 seconds.
Check the DTCs (RAV4_ACA30 RM000000XFE06SX.html).
- 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.
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| NG | |
| 2.CHECK CONNECTOR |
Turn the ignition switch off.
Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
Disconnect SST from the spiral cable.
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.
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| OK | |
| 3.CHECK DRIVER SIDE SQUIB 2ND STEP CIRCUIT |
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Disconnect the connector 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 (IG).
Measure the voltage of the wire harness side connector.
- Standard voltage:
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 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 (RAV4_ACA30 RM000000XFD06JX.html).
Measure the resistance of the wire harness side connector.
- Standard resistance:
Tester Connection Specified Condition D2+ - D2- 1 MΩ or higher
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| OK | |
| 4.CHECK INSTRUMENT PANEL WIRE |
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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 (IG).
Measure the voltage of the wire harness side connector.
- Standard voltage:
Tester Connection Specified Condition E11-4 (D2+) - Body ground Below 1 V E11-3 (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 E11-4 (D2+) - E11-3 (D2-) Below 1 Ω E11-4 (D2+) - Body ground 1 MΩ or higher E11-3 (D2-) - Body ground 1 MΩ or higher
Release the activation prevention mechanism built into connector B (RAV4_ACA30 RM000000XFD06JX.html).
Measure the resistance of the wire harness side connector.
- Standard resistance:
Tester Connection Specified Condition E11-4 (D2+) - E11-3 (D2-) 1 MΩ or higher
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| OK | ||
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