DTC Troubleshooting: B0050-13

DTC B0050-13: Open or Increased Resistance in the Driver's Seat Belt Buckle Switch

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 that they were properly installed.
	Before doing this troubleshooting procedure, review SRS Precautions and Procedures, General Troubleshooting Information, and 12 Volt Battery Terminal Disconnection and Reconnection.

DTC Description	DTC
B0050-13 Open or increased resistance in the driver's seat belt buckle switch

Problem verification:

Problem verification

?1.	Clear the DTCs with the HDS.

?2.	Turn the vehicle to the ON mode, then wait for 10 seconds. Buckle and unbuckle the driver's seat belt several times.

?3.

Check for DTCs with the HDS.

DTC Description	DTC
B0050-13 Open or increased resistance in the driver's seat belt buckle switch

Is DTC B0050-13 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 seat belt buckle switch check:

Driver's seat belt buckle switch check

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

?2.	Disconnect the driver's seat belt buckle switch 2P connector (A) on the right side wire harness.

?3.

Connect terminals A and B with a jumper wire.

Terminal A	Driver's seat belt buckle switch 2P connector No. 1 (on the right side wire harness)
Terminal B	Driver's seat belt buckle switch 2P connector No. 2 (on the right side wire harness)

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

?5.

Check for DTCs with the HDS.

DTC Description	DTC
B0050-11 Short or decreased resistance in the driver's seat belt buckle switch

Is DTC B0050-11 indicated?


	YES

Open in the driver's seat belt buckle switch; replace the driver's seat belt buckle assembly, then clear the DTC.?


	NO

Go to step 3.

Open wire check (FLBC line):

Open wire check (FLBC line)

?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 seat belt buckle switch 2P connector on the right side wire harness.

?4.

Disconnect the following connector.

SRS unit connector B (39P)

?5.

Measure the resistance between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	Driver's seat belt buckle switch 2P connector (on the right side wire harness): disconnected
	SRS unit connector B (39P): disconnected
Test point 1	Driver's seat belt buckle switch 2P connector No. 1 (on the right side wire harness)
Test point 2	SRS unit connector B (39P) No. 29

Is there 1.0 ? or less?


	YES

The FLBC wire is OK. Go to step 4.


	NO

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

Open wire check (GND line):

Open wire check (GND line)

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

?2.

Measure the resistance between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	Driver's seat belt buckle switch 2P connector (on the right side wire harness): disconnected
	SRS unit connector B (39P): disconnected
Test point 1	Driver's seat belt buckle switch 2P connector No. 2 (on the right side wire harness)
Test point 2	Body ground

Is there 1.0 ? or less?


	YES

The GND wire is OK. SRS unit or poor connection at SRS unit connector B (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 right side wire harness.?


	NO

Open in the right side wire harness; check for a poor ground at G651. If the ground is OK, replace the right side wire harness, then clear the DTC.?