Toyota RAV4 manuals

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

  • Short circuit in driver side squib wire harness (to B+)
  • 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:

1 CHECK STEERING PAD (DRIVER SIDE SQUIB)

CHECK STEERING PAD (DRIVER SIDE SQUIB)

  1. Turn the ignition switch to the LOCK position.
  2.  Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
  3.  Disconnect the connectors from the steering pad.
  4.  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

  1.  Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
  2.  Turn the ignition switch to the ON position, and wait for at least 60 seconds.
  3.  Clear the DTCs stored in memory (5).
  4.  Turn the ignition switch to the LOCK position.
  5.  Turn the ignition switch to the ON position, and wait for at least 60 seconds.
  6.  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

CHECK DRIVER SIDE SQUIB CIRCUIT

  1. Turn the ignition switch to the LOCK position.
  2.  Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
  3.  Disconnect the SST (resistance 2.1 Ω) from the spiral cable.
  4.  Disconnect the connector from the center airbag sensor assembly.
  5.  Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
  6.  Turn the ignition switch to the ON position.
  7.  Measure the voltage according to the value(s) in the table below.

Standard voltage

Go to step 4

3 CHECK CENTER AIRBAG SENSOR ASSEMBLY

CHECK CENTER AIRBAG SENSOR ASSEMBLY

  1. Turn the ignition switch to the LOCK position.
  2.  Disconnect the negative (-) terminal cable form the battery, and wait for at least 90 seconds.
  3.  Connect the connectors to the steering pad and the center airbag sensor assembly.
  4.  Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
  5.  Turn the ignition switch to the ON position, and wait for at least 60 seconds.
  6.  Clear the DTCs stored in memory (5).
  7.  Turn the ignition switch to the LOCK position.
  8.  Turn the ignition switch to the ON position, and wait for at least 60 seconds.
  9.  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

CHECK INSTRUMENT PANEL WIRE

  1. Turn the ignition switch to the LOCK position.
  2.  Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
  3.  Disconnect the instrument panel wire connector from the spiral cable.
  4.  Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
  5.  Turn the ignition switch to the ON position.
  6.  Measure the voltage according to the value(s) in the table below.

Standard voltage

Standard voltage

REPAIR OR REPLACE INSTRUMENT PANEL WIRE

5 CHECK SPIRAL CABLE

CHECK SPIRAL CABLE

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

Standard voltage

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:

Fuel Pump Primary Circuit
DESCRIPTION This DTC is designed to detect a malfunction in the fuel pump (FUEL PUMP) relay circuit. When the system is normal, the battery voltage is applied to FPR terminal of the ECM while the FUEL PUMP relay is turned OFF. If the battery voltage is not applied to the FPR ter ...

Bluetooth
When using the Bluetooth® audio system In the following conditions, the system may not function. If the portable audio player is turned off If the portable audio player is not connected If the portable audio player’s battery is low There may be a delay if a cellular phone conn ...

Rear wiper rubber
COMPONENTS REMOVAL 1. REMOVE REAR WIPER BLADE ASSEMBLY  Remove the rear wiper arm head cap from the rear wiper arm.  Raise the rear wiper blade to the position as shown in the illustration where the meshing of the claw is disengaged with the click sound. NOTICE: ...

© 2011-2022 Copyright www.tsienna.net