Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - SUPPLEMENTAL RESTRAINT SYSTEMS
CHECK CURTAIN SHIELD AIRBAG LH (CURTAIN SHIELD SQUIB LH)
CHECK FLOOR WIRE (CURTAIN SHIELD AIRBAG LH CIRCUIT)
DTC B1835/58 Short in Curtain Shield Squib LH Circuit
DTC B1836/58 Open in Curtain Shield Squib LH Circuit
DTC B1837/58 Short to GND in Curtain Shield Squib LH Circuit
DTC B1838/58 Short to B+ in Curtain Shield Squib LH Circuit
DESCRIPTION
The curtain shield squib LH circuit consists of the center airbag sensor and the curtain shield airbag LH.
The circuit instructs the SRS to deploy when deployment conditions are met.
These DTCs are stored when a malfunction is detected in the curtain shield squib LH circuit.
| DTC Code | DTC Detection Condition | Trouble Area |
| B1835/58 | When one of the following conditions is met: The center airbag sensor receives a line short circuit signal 5 times in the curtain shield squib LH circuit during the primary check. A curtain shield squib LH malfunction. A center airbag sensor malfunction. | Floor wire Curtain shield airbag assembly LH (Curtain shield squib LH) Center airbag sensor assembly |
| B1836/58 | When one of the following conditions is met: The center airbag sensor receives an open circuit signal in the curtain shield squib LH circuit for 2 seconds. A curtain shield squib LH malfunction. A center airbag sensor malfunction. | Floor wire Curtain shield airbag assembly LH (Curtain shield squib LH) Center airbag sensor assembly |
| B1837/58 | When one of the following conditions is met: The center airbag sensor receives a short circuit to ground signal in the curtain shield squib LH circuit for 0.5 seconds. A curtain shield squib LH malfunction. A center airbag sensor malfunction. | Floor wire Curtain shield airbag assembly LH (Curtain shield squib LH) Center airbag sensor assembly |
| B1838/58 | When one of the following conditions is met: The center airbag sensor receives a short circuit to B+ signal in the curtain shield squib LH circuit for 0.5 seconds. A curtain shield squib LH malfunction. A center airbag sensor malfunction. | Floor wire Curtain shield airbag assembly LH (Curtain shield squib LH) Center airbag sensor assembly |
WIRING DIAGRAM
INSPECTION PROCEDURE
- NOTICE:
- HINT:
- To perform the simulation method, enter the check mode (signal check) with the intelligent tester (), and then wiggle each connector of the airbag system or drive the vehicle on various type of road ().
| 1.CHECK CURTAIN SHIELD AIRBAG LH (CURTAIN SHIELD SQUIB LH) |
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 curtain shield airbag LH.
Connect the white wire side of SST (resistance: 2.1 Ω) to connector C.
- CAUTION:
- Never connect the tester to the curtain shield airbag LH (curtain shield squib LH) for measurement, as this may lead to a serious injury due to airbag deployment.
- NOTICE:
- SST
- 09843-18061
Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
Turn the ignition switch ON, and wait for at least 60 seconds.
Clear the DTCs ().
Turn the ignition switch off.
Turn the ignition switch ON, and wait for at least 60 seconds.
Check for DTCs ().
- OK:
- DTC B1835, B1836, B1837 or B1838 is not output.
- HINT:
- Codes other than DTC B1835, B1836, B1837 and B1838 may be output at this time, but they are not related to this check.
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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 C.
Check that the floor wire connectors (on the curtain shield airbag LH side) are not damaged.
- OK:
- The lock button is not disengaged, and the claw of the lock is not deformed or damaged.
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| OK | |
| 3.CHECK FLOOR WIRE (CURTAIN SHIELD AIRBAG LH 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 K6-1 (ICL+) - Body ground Ignition switch ON Below 1 V K6-2 (ICL-) - 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 K6-1 (ICL+) - K6-2 (ICL-) Always Below 1 Ω
Release the activation prevention mechanism built into connector B ().
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition K6-1 (ICL+) - K6-2 (ICL-) Always 1 MΩ or higher K6-1 (ICL+) - Body ground Always 1 MΩ or higher K6-2 (ICL-) - Body ground Always 1 MΩ or higher
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| OK | |
| 4.CHECK CENTER AIRBAG SENSOR |
Connect the connectors to the curtain shield airbag LH and the center airbag sensor.
Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
Turn the ignition switch ON, and wait for at least 60 seconds.
Clear the DTCs ().
Turn the ignition switch off.
Turn the ignition switch ON, and wait for at least 60 seconds.
Check for DTCs ().
- OK:
- DTC B1835, B1836, B1837 or B1838 is not output.
- HINT:
- Codes other than DTC B1835, B1836, B1837 and B1838 may be output at this time, but they are not related to this check.
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| OK | ||
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