Toyota Sienna Service Manual: Short in Curtain Shield Squib LH Circuit
DTC B1165/87 Short 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 B1165/87 is recorded when a short circuit is detected in the curtain shield
squib LH circuit.
DTC No. |
DTC Detecting Condition |
Trouble Area |
B1165/87 |
- Short circuit between ICL+ wire harness and ICLwire
harness of curtain shield squib LH
- Curtain shield squib LH malfunction
- Center airbag sensor assembly malfunction
|
- Curtain shield airbag assembly LH (Curtain shield
squib LH)
- Center airbag sensor assembly
- Floor wire
|
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)
- 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 (5).
- 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 (5).
OK:
DTC B1165/87 is not output.
HINT:
Codes other than DTC B1165/87 may be output at this
time, but they are not related to this check.
Go to step 2
REPLACE CURTAIN SHIELD AIRBAG ASSEMBLY LH
2 CHECK CONNECTORS
- 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.
- Check that the floor wire connectors (on the curtain
shield airbag assembly LH side) are not damaged.
OK:
The lock button is not disengaged, and the claw of
the lock is not deformed or damaged.
REPAIR OR REPLACE FLOOR WIRE
3 CHECK FLOOR WIRE (CURTAIN SHIELD SQUIB LH CIRCUIT)
- Disconnect the connector from the center airbag sensor
assembly.
- Release the activation prevention mechanism built into
connector "B" (7).
- Measure the resistance according to the value(s) in the
table below.
Standard resistance
REPAIR OR REPLACE FLOOR WIRE
4 CHECK CENTER AIRBAG SENSOR ASSEMBLY
- 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 (5).
- 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 (5).
OK:
DTC B1165/87 is not output.
HINT:
Codes other than DTC B1165/87 may be output at this
time, but they are not related to this check.
REPLACE CENTER AIRBAG SENSOR
ASSEMBLY
USE SIMULATION METHOD TO CHECK
DTC B1163/82 Short to B+ in Curtain Shield Squib RH Circuit
DESCRIPTION
The curtain shield squib RH circuit consists of the center airbag sensor
assembly and the curtain shield
airbag assembly RH ...
DTC B1166/88 Open 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.
Th ...
Other materials:
Adjustment procedure
To select a mirror to adjust, turn
the switch.
Left
Right
To adjust the mirror, move the
switch.
Up
Right
Down
Left
...
On-vehicle inspection
1. INSPECT STEERING PAD (VEHICLE NOT INVOLVED IN COLLISION)
Perform a diagnostic system check.
With the steering pad installed on the vehicle,
perform a visual check. If there are any defects as
mentioned below, replace the steering pad with a
new one:
Cuts, minute cracks or marked ...
Axle
SST
RECOMMENDED TOOLS
HINT:
Trox is a registered trademark of Trxtron Inc.
EQUIPMENT
...