How a Battery Functions

 

DTC B0001-13 Overview

If a voltage on the detection line inside the SRS unit is higher than a specified value, the SRS unit determines an abnormality and stores the DTC.

Inspection Outline

The components to be tested are indicated by a dotted line.

NOTICE:

Before disconnecting the SRS related connector, do the 12 volt battery terminal disconnection procedure and wait for at least 3 minutes.

NOTE:

Since there is no direct method to test the component itself, troubleshooting is performed on the related components.

1. Driver's Airbag Inspection

Test Procedure

Driver's airbag circuit inspection

Preparation

－Driver's airbag first inflator 2P connector: disconnected

Procedure

1. Install a jumper wire between driver's airbag first inflator 2P connector terminals No. 1 and No. 2.
2. Perform the confirmation procedure.

Normal Conditions

－DTC B0001-13 is not indicated.

■ Results

If it is normal, there is a problem with the driver's airbag.

If it is abnormal, there is a problem with other related components.

2. Cable Reel Inspection

■ Test Procedure

Preparation

－Driver's airbag first inflator 2P connector: disconnected

－Cable reel connector B (4P): disconnected

Procedure

－Perform the inspection according to the following table.

■ Results

If it is abnormal, there is a problem with the cable reel.

3. RA1+, RA1- Open Wire Inspection

■ Test Procedure

Preparation

－SRS unit connector A (43P): disconnected

－Cable reel connector B (4P): disconnected

Procedure

－Perform the inspection according to the following table.

■ Results

If abnormal, there is a problem in the circuit.

3. SRS Unit Inspection

■ Test Procedure

If the other inspection item(s) indicated a normal condition, then it is determined that the remaining SRS unit is the cause.

■ Results

There is a problem with the SRS unit.

Confirmation Procedure

Turn the vehicle to the ON mode, then wait for 10 seconds.