Toyota Sienna Service Manual: Short to B+ in Curtain Shield Squib RH Circuit
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.
The circuit instructs the SRS to deploy when deployment conditions are met.
DTC B1163/82 is recorded when a short to B+ is detected in the curtain shield
squib RH circuit
DTC No. |
DTC Detecting Condition |
Trouble Area |
B1163/82 |
- Short circuit in curtain shield squib RH wire harness
(to B+)
- Curtain shield squib RH malfunction
- Center airbag sensor assembly malfunction
|
- Curtain shield airbag assembly RH (Curtain shield
squib RH)
- Center airbag sensor assembly
- Floor wire No. 2
|
INSPECTION PROCEDURE
HINT:
- Perform the simulation method by selecting the "check mode"
(signal check) with the intelligent tester
(8).
- 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 RH (CURTAIN SHIELD SQUIB RH)
- 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 RH.
- Connect the white wire side of SST (resistance 2.1 Ω) to
the floor wire No. 2.
CAUTION:
Never connect a tester to the curtain shield airbag
assembly RH (Curtain shield squib RH) 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
OK:
DTC B1163/82 is not output.
HINT:
Codes other than DTC B1163/82 may be output at this
time, but they are not related to this check.
Go to step 2
REPLACE CURTAIN SHIELD AIRBAG ASSEMBLY RH
2 CHECK FLOOR WIRE NO.2 (CURTAIN SHIELD SQUIB RH 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 No. 2.
- 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
REPAIR OR REPLACE FLOOR WIRE
NO.2
3 CHECK CENTER AIRBAG SENSOR ASSEMBLY
- 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 RH 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 B1163/82 is not output.
HINT:
Codes other than code B1163/82 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 B1162/81 Short to GND 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 R ...
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.
T ...
Other materials:
How to proceed with
troubleshooting
1 VEHICLE BROUGHT INTO A WORKSHOP
2 DIAGNOSTIC QUESTIONING AND SYMPTOM CONFIRMATION
Ask the customer about symptoms and confirm
malfunctions.
3 CONFIRM THE SYSTEM NORMAL CONDITION
4 CHECK DTC
HINT:
If the system cannot enter the diagnosis mode, inspect each
AVC-LAN communication signal ...
Diagnostic trouble code chart
COMMUNICATION DIAGNOSIS:
DVD PLAYER:
CD PLAYER
IN-DASH CD CHANGER
...
Diagnostic trouble code chart
If a malfunction code is displayed during the DTC check,
check the circuit listed for that code in the chart below
(Proceed to the page given for that circuit).
MULTIPLEX COMMUNICATION SYSTEM
DTC Code
Detection Item
Trouble Area
B1200
MPX Body ECU Stop
...