Toyota Sienna Service Manual: Short to B+ in Curtain Shield Squib LH Circuit
DTC B1168/86 Short to B+ in Curtain Shield Squib LH Circuit
DESCRIPTION
The curtain shield squib LH circuit consists of the center airbag sensor
assembly and the curtain shield
airbag assembly LH.
The circuit instructs the SRS to deploy when deployment conditions are met.
DTC B1168/86 is recorded when a short to B+ is detected in the curtain shield
squib LH circuit.
![DESCRIPTION](images/books/424/79/index463.jpg)
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
- Perform the simulation method by selecting the "check mode"
(signal check) with the intelligent tester.
- 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
1 CHECK CURTAIN SHIELD AIRBAG ASSEMBLY LH (CURTAIN SHIELD SQUIB LH)
![CHECK CURTAIN SHIELD AIRBAG ASSEMBLY LH](images/books/424/79/index464.jpg)
- Turn the ignition switch to the LOCK position.
- Disconnect the negative (-) terminal cable from the
battery, and wait for at least 90 seconds.
- Disconnect the connectors from the curtain shield airbag
assembly LH.
- Connect the white wire side of SST (resistance 2.1 Ω) to
the floor wire.
CAUTION:
Never connect a tester to the curtain shield airbag
assembly LH (curtain shield squib LH) for
measurement, as this may lead to a serious injury
due to airbag deployment.
NOTICE:
Do not forcibly insert the SST into the terminals of
the connector when connecting.
Insert the SST straight into the terminals of the
connector.
SST 09843-18060
- Connect the negative (-) terminal cable to the battery,
and wait for at least 2 seconds.
- Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
- Clear the DTCs stored in memory.
- Turn the ignition switch to the LOCK position.
- Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
- Check the DTCs
OK:
DTC B1168/86 is not output.
HINT:
Codes other than DTC B1168/86 may be output at this
time, but they are not related to this check.
REPLACE CURTAIN SHIELD AIRBAG ASSEMBLY LH
2 CHECK FLOOR WIRE (CURTAIN SHIELD SQUIB LH CIRCUIT)
![CHECK FLOOR WIRE (CURTAIN SHIELD SQUIB LH CIRCUIT)](images/books/424/79/index465.jpg)
- Turn the ignition switch to the LOCK position.
- Disconnect the negative (-) terminal cable from the
battery, and wait for at least 90 seconds.
- Disconnect the SST (resistance 2.1 Ω) from the floor
wire.
- Disconnect the connector from the center airbag sensor
assembly.
- Connect the negative (-) terminal cable to the battery,
and wait for at least 2 seconds.
- Turn the ignition switch to the ON position.
- Measure the voltage according to the value(s) in the
table below.
Standard voltage
![Standard voltage](images/books/424/79/index466.jpg)
3 CHECK CENTER AIRBAG SENSOR ASSEMBLY
![CHECK CENTER AIRBAG SENSOR ASSEMBLY](images/books/424/79/index467.jpg)
- Turn the ignition switch to the LOCK position.
- Disconnect the negative (-) terminal cable from the
battery, and wait for at least 90 seconds.
- Connect the connectors to the curtain shield airbag
assembly LH and the center airbag sensor assembly.
- Connect the negative (-) terminal cable to the battery,
and wait for at least 2 seconds.
- Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
- Clear the DTCs stored in memory.
- Turn the ignition switch to the LOCK position.
- Turn the ignition switch to the ON position, and wait for at
least 60 seconds.
- Check the DTCs.
OK:
DTC B1168/86 is not output.
HINT:
Codes other than code B1168/86 may be output at this
time, but they are not related to this check.
USE SIMULATION METHOD TO CHECK
DTC B1167/85 Short to GND in Curtain Shield Squib LH Circuit
DESCRIPTION
The curtain shield squib LH circuit consists of the center airbag sensor
assembly and the curtain shield
airbag assembly L ...
DTC B1180/17 Short in Driver Side Squib 2nd Step Circuit
DESCRIPTION
The driver side squib 2nd step circuit consists of the center airbag sensor
assembly, the spiral cable and
the steering pad.
...
Other materials:
Installation
1. INSTALL REAR NO. 1 SEAT ASSEMBLY LH
Place the seat in the cabin.
NOTICE:
Be careful not to damage the body.
Install the seat.
7-Passenger RH:
Install the seat belt anchor plate with the bolt.
Torque: 42 N*m (428 kgf*cm, 31 ft.*lbf)
Install the headrest. ...
Television camera
COMPONENTS
REMOVAL
1. REMOVE BACK DOOR GARNISH CENTER
HINT:
Back Door:
Power Back Door:
2. REMOVE BACK DOOR SIDE GARNISH LH
HINT:
Back Door:
Power Back Door:
3. REMOVE BACK DOOR SIDE GARNISH RH
Back Door:
Power Back Door: ...
Identification of noise source
1. Radio Description
Radio frequency band
Radio broadcasts use the radio frequency bands
shown in the table below
Service area
The service areas of AM and FM broadcasts are
vastly different. Sometimes an AM broadcast
can be received very clearly but an FM st ...