Toyota Sienna Service Manual: Short to B+ in Driver Side Squib Circuit
DTC B0103/12 Short to B+ in Driver Side Squib Circuit
DESCRIPTION
The driver side squib circuit consists of the center airbag sensor assembly, the spiral cable and the steering pad.
The circuit instructs the SRS to deploy when deployment conditions are met.
DTC B0103/12 is recorded when a short to B+ is detected in the driver side squib circuit
|
DTC No. |
DTC Detecting Condition |
Trouble Area |
|
B0103/12 |
|
|
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 STEERING PAD (DRIVER SIDE SQUIB)
- 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 steering pad.
- Connect the white wire side of SST (resistance 2.1 Ω) to the spiral cable.
CAUTION: Never connect a tester to the steering pad (driver side squib) 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 B0103/12 is not output. HINT: Codes other than DTC B0103/12 may be output at this time, but they are not related to this check.
Go to step 2
REPLACE STEERING PAD
2 CHECK DRIVER SIDE SQUIB 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 spiral cable.
- 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
Go to step 4
3 CHECK CENTER AIRBAG SENSOR ASSEMBLY
- Turn the ignition switch to the LOCK position.
- Disconnect the negative (-) terminal cable form the battery, and wait for at least 90 seconds.
- Connect the connectors to the steering pad 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 B0103/12 is not output. HINT: Codes other than code B0103/12 may be output at this time, but they are not related to this check.
REPLACE CENTER AIRBAG SENSOR
ASSEMBLY
USE SIMULATION METHOD TO CHECK
4 CHECK INSTRUMENT PANEL WIRE
- 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 instrument panel wire connector from the spiral cable.
- 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 INSTRUMENT
PANEL
WIRE
5 CHECK SPIRAL CABLE
- Measure the voltage according to the value(s) in the table below.
Standard voltage
REPLACE SPIRAL CABLE
USE SIMULATION METHOD TO CHECK
Short to GND in Driver Side Squib Circuit
DTC B0102/11 Short to GND in Driver Side Squib Circuit
DESCRIPTION
The driver side squib circuit consists of the center airbag sensor assembly,
the spiral cable and the
steering pad.
The circu ...
Short in Front Passenger Side Squib Circuit
DTC B0105/53 Short in Front Passenger Side Squib Circuit
DESCRIPTION
The front passenger side squib circuit consists of the center airbag sensor
assembly and the front
passenger airbag assembly.
...
Other materials:
Warning light and indicator light bulb check
(a) Check the warning lights.
(1) Release parking brake pedal.
(2) When the ignition switch is turned to the ON
position, check that the ABS warning light,
BRAKE warning light, VSC warning light, TRAC
OFF indicator light (2WD) and SLIP indicator
light stay on for approx. 3 seconds.
HI ...
Installation
1. INSTALL REAR DOOR WINDOW FRAME MOULDING
Remove the tape from the rear door window frame
moulding.
Clean the contact surface of the vehicle body with
white gasoline.
Clean the outer circumference of the rear door
window frame moulding with white gasoline.
Apply new double-sided ...
Catalyst monitor (active air-fuel ratio control
type)
(a) Preconditions
The monitor will not run unless:
The MIL is OFF.
(b) Drive Pattern
(1) Connect an intelligent tester.
(2) Turn the ignition switch to the ON position.
(3) Turn the tester or scan tool ON.
(4) Clear the DTCs.
(5) Start the engine and warm it up.
(6) Drive ...
