DTC Troubleshooting: B0001-13

DTC B0001-13: Open or Increased Resistance in the Driver's Airbag First Inflator

NOTE:

	Before doing this troubleshooting procedure, find out if the vehicle was in a collision. If so, verify that all the required components were replaced with new components of the correct part number and were properly installed.
	Before doing this troubleshooting procedure, review SRS Precautions and Procedures, General Troubleshooting Information, and 12 Volt Battery Terminal Disconnection and Reconnection.
	Before replacing the SRS unit, check the SRS unit software version with the HDS. If the software version is not the latest, update the SRS unit software, and retest.

DTC Description	DTC
B0001-13 Open or increased resistance in the driver's airbag first inflator

Problem verification:

Problem verification

?1.	Clear the DTCs with the HDS.

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

?3.

Check for DTCs with the HDS.

DTC Description	DTC
B0001-13 Open or increased resistance in the driver's airbag first inflator

Is DTC B0001-13 indicated?


	YES

The failure is duplicated. Go to step 2.


	NO

Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures. If another DTC is indicated, troubleshoot the DTC.?

Driver's airbag inflator check:

Driver's airbag inflator check

?1.	Turn the vehicle to the OFF (LOCK) mode.

?2.	Disconnect the negative cable from the 12 volt battery, then wait at least 3 minutes.

?3.	Remove the driver's airbag.

?4.

Disconnect the following connector.

Driver's airbag first inflator 2P connector (on the cable reel harness)

?5.

Connect terminals A and B with a jumper wire.

Terminal A	Driver's airbag first inflator 2P connector No. 1 (on the cable reel harness)
Terminal B	Driver's airbag first inflator 2P connector No. 2 (on the cable reel harness)

?6.	Reconnect the negative cable to the 12 volt battery.

?7.	Clear the DTCs with the HDS.

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

?9.

Check for DTCs with the HDS.

DTC Description	DTC
B0001-13 Open or increased resistance in the driver's airbag first inflator

Is DTC B0001-13 indicated?


	YES

Go to step 3.


	NO

Faulty driver's airbag first inflator; replace the driver's airbag, then clear the DTC.?

Cable reel check:

Cable reel check

?1.	Turn the vehicle to the OFF (LOCK) mode.

?2.	Disconnect the negative cable from the 12 volt battery, then wait at least 3 minutes.

?3.	Remove the jumper wire from the driver's airbag first inflator 2P connector on the cable reel harness.

?4.	Remove the column covers.

?5.	Disconnect cable reel connector B (4P) on the dashboard wire harness.

?6.

Connect terminals A and B with a jumper wire.

Terminal A	Cable reel connector B (4P) No. 1 (on the dashboard wire harness)
Terminal B	Cable reel connector B (4P) No. 2 (on the dashboard wire harness)

?7.	Reconnect the negative cable to the 12 volt battery.

?8.	Clear the DTCs with the HDS.

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

?10.

Check for DTCs with the HDS.

DTC Description	DTC
B0001-13 Open or increased resistance in the driver's airbag first inflator

Is DTC B0001-13 indicated?


	YES

Go to step 4.


	NO

Open in the cable reel; replace the cable reel, then clear the DTC.?

Open wire check (LA1?, LA1? lines):

Open wire check (LA1?, LA1? lines)

?1.	Turn the vehicle to the OFF (LOCK) mode.

?2.	Disconnect the negative cable from the 12 volt battery, then wait at least 3 minutes.

?3.	Remove the jumper wire from cable reel connector B (4P) on the dashboard wire harness.

?4.

Disconnect the following connector.

SRS unit connector A (39P)

?5.

Connect terminals A and B with a jumper wire.

Terminal A	SRS unit connector A (39P) No. 9
Terminal B	SRS unit connector A (39P) No. 8

?6.

Measure the resistance between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	Driver's airbag first inflator 2P connector (on the cable reel harness): disconnected
	Cable reel connector B (4P) (on the dashboard wire harness): disconnected
	SRS unit connector A (39P): disconnected
	SRS unit connector A (39P) terminals No. 9 and No. 8: jumped
Test point 1	Cable reel connector B (4P) No. 1 (on the dashboard wire harness)
Test point 2	Cable reel connector B (4P) No. 2 (on the dashboard wire harness)

Is there 1.0 ? or less?


	YES

The LA1? and LA1? wires are OK. Faulty SRS unit or poor connection at SRS unit connector A (39P) and the SRS unit. Check the connection; if the connection is OK, replace the SRS unit. If the DTC does not clear, replace the dashboard wire harness.?


	NO

Open in the dashboard wire harness; replace the dashboard wire harness, then clear the DTC.?