CHECK STEERING PAD (DRIVER SIDE SQUIB 2ND STEP)
CHECK DRIVER SIDE SQUIB 2ND STEP CIRCUIT
CHECK INSTRUMENT PANEL WIRE (CENTER AIRBAG SENSOR - SPIRAL CABLE)
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, spiral cable and steering pad.The circuit instructs the SRS to deploy when deployment conditions are met.
These DTCs are stored when a malfunction is detected in the driver side squib 2nd step circuit.
| DTC Code | DTC Detection Condition | Trouble Area |
| B1810/53 | One of the following conditions is met:
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| B1811/53 | One of the following conditions is met:
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| B1812/53 | One of the following conditions is met:
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| B1813/53 | One of the following conditions is met:
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WIRING DIAGRAM
INSPECTION PROCEDURE
- NOTICE:
- After turning the ignition switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work (LandCruiser RM000003YMD00TX.html).
- When installing the spiral cable and steering wheel, be sure to adjust the spiral cable as it may break if the steering wheel is turned before adjusting the spiral cable (LandCruiser RM000002O8U02GX.html).
- When disconnecting the cable from the negative (-) battery terminal while performing repairs, some systems need to be initialized after the cable is reconnected (LandCruiser RM000003YMF011X.html).
- HINT:
- To perform the simulation method, enter check mode (signal check) with the intelligent tester (LandCruiser RM000000XFF0H0X.html), and then wiggle each connector of the airbag system or drive the vehicle on various types of road (LandCruiser RM000000XFD0N3X.html).
| 1.CHECK STEERING PAD (DRIVER SIDE SQUIB 2ND STEP) |
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 the white wire side of SST (resistance: 2.1 Ω) to connector E (black connector).
- CAUTION:
- Never connect the 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 SST.
- 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 to ON, and wait for at least 60 seconds.
Clear the DTCs (LandCruiser RM000000XFE0NGX.html).
Turn the ignition switch off.
Turn the ignition switch to ON, and wait for at least 60 seconds.
Check for DTCs (LandCruiser RM000000XFE0NGX.html).
- OK:
- DTC B1810, B1811, B1812 or B1813 is not output.
- HINT:
- Codes other than DTC B1810, B1811, B1812 and B1813 may be output at this time, but they are not related to this check.
Text in Illustration *1 Driver Side Squib 2nd Step *2 Spiral Cable *3 Center Airbag Sensor *4 Connector E *5 SST *a Front view of wire harness connector
(to Driver Side Squib 2nd Step)*b Color: Black
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| OK | ||
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| 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 connector E.
Check that the spiral cable connectors (on the steering pad side) are not damaged.
- OK:
- The lock button is not disengaged, and the claw of the lock is not deformed or damaged.
Text in Illustration *1 Driver Side Squib 2nd Step *2 Spiral Cable *3 Center Airbag Sensor
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| OK | |
| 3.CHECK DRIVER SIDE SQUIB 2ND STEP CIRCUIT |
 |
Disconnect the connectors from the center airbag sensor.
Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Switch Condition Specified Condition z6-2 (D2+) - Body ground Ignition switch ON Below 1 V z6-1 (D2-) - Body ground Ignition switch ON 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 according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition z6-2 (D2+) - z6-1 (D2-) Always Below 1 Ω
Release the activation prevention mechanism built into connector B (LandCruiser RM000000XFD0N3X.html).
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition z6-2 (D2+) - z6-1 (D2-) Always 1 MΩ or higher z6-2 (D2+) - Body ground Always 1 MΩ or higher z6-1 (D2-) - Body ground Always 1 MΩ or higher
| *1 | Driver Side Squib 2nd Step |
| *2 | Spiral Cable |
| *3 | Center Airbag Sensor |
| *4 | Connector E |
| *a | Front view of wire harness connector (to Driver Side Squib 2nd Step) |
| *b | Color: Black |
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| OK | |
| 4.CHECK CENTER AIRBAG SENSOR |
Connect the connectors to the steering pad and center airbag sensor.
 |
Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
Turn the ignition switch to ON, and wait for at least 60 seconds.
Clear the DTCs (LandCruiser RM000000XFE0NGX.html).
Turn the ignition switch off.
Turn the ignition switch to ON, and wait for at least 60 seconds.
Check for DTCs (LandCruiser RM000000XFE0NGX.html).
- OK:
- DTC B1810, B1811, B1812 or B1813 is not output.
- HINT:
- Codes other than DTC B1810, B1811, B1812 and B1813 may be output at this time, but they are not related to this check.
Text in Illustration *1 Driver Side Squib 2nd Step *2 Spiral Cable *3 Center Airbag Sensor
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| OK | ||
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| 5.CHECK INSTRUMENT PANEL WIRE (CENTER AIRBAG SENSOR - SPIRAL CABLE) |
Restore the released activation prevention mechanism of connector B to its original condition.
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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.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Switch Condition Specified Condition G41-4 (D2+) - Body ground Ignition switch ON Below 1 V G41-3 (D2-) - Body ground Ignition switch ON 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 according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition G41-4 (D2+) - G41-3 (D2-) Always Below 1 Ω
Release the activation prevention mechanism built into connector B (LandCruiser RM000000XFD0N3X.html).
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition G41-4 (D2+) - G41-3 (D2-) Always 1 MΩ or higher G41-4 (D2+) - Body ground Always 1 MΩ or higher G41-3 (D2-) - Body ground Always 1 MΩ or higher
| *1 | Instrument Panel Wire |
| *2 | Spiral Cable |
| *3 | Center Airbag Sensor |
| *4 | Connector C |
| *5 | SST |
| *a | Rear view of wire harness connector (to Spiral Cable) |
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| OK | ||
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