Toyota Sienna Service Manual: Short to GND in Side Squib LH Circuit
DTC B0117/45 Short to GND in Side Squib LH Circuit
DESCRIPTION
The side squib LH circuit consists of the center airbag sensor assembly and
the front seat side airbag
assembly LH.
This circuit instructs the SRS to deploy when deployment conditions are met.
DTC B0117/45 is recorded when a short to ground is detected in the side squib LH
circuit.

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 FRONT SEAT SIDE AIRBAG ASSEMBLY LH (SIDE SQUIB LH)

- 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 front seat side
airbag assembly LH.
- Connect the black wire side of SST (resistance 2.1 Ω) to
the floor wire.
CAUTION:
Never connect a tester to the front seat side airbag
assembly LH (side 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 B0117/45 is not output.
HINT:
Codes other than DTC B0117/45 may be output at this
time, but they are not related to this check.
REPLACE FRONT SEAT ASSEMBLY LH
2 CHECK FLOOR WIRE (SIDE SQUIB LH CIRCUIT)

- 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.
- Measure the resistance according to the value(s) in the
table below.
Standard resistance

3 CHECK CENTER AIRBAG SENSOR ASSEMBLY

- Connect the connectors to the front seat side 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 B0117/45 is not output.
HINT:
Codes other than code B0117/45 may be output at this
time, but they are not related to this check.
USE SIMULATION METHOD TO CHECK
DTC B0116/48 Open in Side Squib LH Circuit
DESCRIPTION
The side squib LH circuit consists of the center airbag sensor assembly and
the front seat side assembly
LH.
This circuit instructs the S ...
DTC B0118/46 Short to B+ in Side Squib LH Circuit
DESCRIPTION
The side squib LH circuit consists of the center airbag sensor assembly and
the front seat side airbag
assembly LH (side squib LH).
...
Other materials:
Transfer
SST
RECOMMENDED TOOLS
EQUIPMENT
LUBRICANT
SSM
...
Push Switch / Key Unlock Warning Switch Malfunction
DTC B2780 Push Switch / Key Unlock Warning Switch Malfunction
DESCRIPTION
This DTC will be output if the transponder key ECU does not detect that the
unlock warning switch is on
even when the ignition switch is on (Under the normal conditions, the unlock
warning switch is on when
the ignitio ...
Seat heaters
For driver’s seat
For front passenger’s seat
On
The indicator light comes on.
Adjusts the seat temperature
The further you move the dial
upward, the warmer the seat
becomes.
The seat heaters can be used when the engine switch is in the “ON”
position
(vehicles ...