Toyota Sienna Service Manual: Short to GND in Driver Side Squib Circuit

Toyota Sienna Service Manual / Supplemental restraint system / Airbag system / Diagnostic trouble code chart / 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 circuit instructs the SRS to deploy when deployment conditions are met.

DTC B0102/11 is recorded when a short to ground is detected in the driver side squib circuit

DTC No.	DTC Detecting Condition	Trouble Area
B0102/11	Short circuit in driver side squib wire harness (to ground) Driver side squib malfunction Spiral cable malfunction Center airbag sensor assembly malfunction	Steering pad (Driver side squib) Spiral cable Center airbag sensor assembly Instrument panel wire

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)

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 B0102/11 is not output. HINT: Codes other than DTC B0102/11 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

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

Standard resistance

Standard resistance

Go to step 4

3 CHECK CENTER AIRBAG SENSOR ASSEMBLY

CHECK CENTER AIRBAG SENSOR ASSEMBLY

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 B0102/11 is not output. HINT: Codes other than code B0102/11 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

CHECK INSTRUMENT PANEL WIRE

Disconnect the instrument panel wire connector from the spiral cable.
Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

REPAIR OR REPLACE INSTRUMENT PANEL WIRE

5 CHECK SPIRAL CABLE

CHECK SPIRAL CABLE

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

Standard resistance

Standard resistance

REPLACE SPIRAL CABLE

USE SIMULATION METHOD TO CHECK

Open in Driver Side Squib Circuit

DTC B0101/14 Open 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 instr ...

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 circui ...

Other materials:

Canceling the power back door system (vehicles with power back door)
Turn the main switch off to disable the power back door system. Off On* *: The orange line at the top of the switch indicates that the power back door system is on. Luggage compartment light The luggage compartment light turns on when the back door is opened with the luggage ...

Short in Front Passenger Side Squib 2nd Step Circuit
DTC B1185/57 Short in Front Passenger Side Squib 2nd Step Circuit DESCRIPTION The front passenger side squib 2nd step circuit consists of the center airbag sensor assembly and the front passenger airbag assembly. The circuit instructs the SRS to deploy when deployment conditions are met. ...

How to proceed with troubleshooting
The intelligent tester can be used at step 2, 5, 8, 11. 1 Vehicle Brought to Workshop 2 Check and Clear DTCs and Freeze Frame Data HINT: See page BC-82 and BC-84. 3 Problem Symptom Confirmation 4 Symptom Simulation 5 DTC Check HINT: See page BC-82. 6 Problem Symptoms Table HINT: ...