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

DTC (SRS)

Problem verification

-1. Clear the DTCs with the HDS .

-2. Press the engine start/stop button to select 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.

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

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

-2. Disconnect the driver's seat belt buckle switch 2P connector (A) on the floor wire harness or the driver's seat wire harness.

Courtesy of HONDA, U.S.A., INC.

-3. Without DPMS: Connect terminals A and B with a jumper wire.

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

Courtesy of HONDA, U.S.A., INC.

-4. With DPMS: Connect terminals A and B with a jumper wire.

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

Courtesy of HONDA, U.S.A., INC.

-5. Press the engine start/stop button to select the ON mode, then wait for 10 seconds.

-6. 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 (with DPMS)

Go to step 5.

NO (without DPMS)

Go to step 3.

Open wire check (FLBC line)

-1. Press the engine start/stop button to select the OFF 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 floor wire harness.

-4. Disconnect the following connector.

SRS unit connector B (39P)

-5. Measure the resistance between test points 1 and 2.

Test condition	OFF mode
	Driver's seat belt buckle switch 2P connector (on the floor wire harness): disconnected
	SRS unit connector B (39P): disconnected
Test point 1	Driver's seat belt buckle switch 2P connector No. 1 (on the floor wire harness)
Test point 2	SRS unit connector B (39P) No. 24

Courtesy of HONDA, U.S.A., INC.

Is there 1.0 Ω or less?

YES

The FLBC wire is OK. Go to step 4.

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

Open wire check (GND line)

-1. Measure the resistance between test points 1 and 2.

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

Courtesy of HONDA, U.S.A., INC.

Is there 1.0 Ω or less?

YES

The GND wire is OK. Faulty 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 floor wire harness.

Open in the floor wire harness; check for a poor ground at G602. If the ground is OK, replace the floor wire harness, then clear the DTC.

Open wire check (FLBC/WARNING SRS UNIT line)

-1. Press the engine start/stop button to select the OFF 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 driver's seat wire harness.

-4. Disconnect the following connector.

SRS unit connector B (39P)

-5. Measure the resistance between test points 1 and 2.

Test condition	OFF mode
	Driver's seat belt buckle switch 2P connector (on the floor wire harness): disconnected
	SRS unit connector B (39P): disconnected
Test point 1	Driver's seat belt buckle switch 2P connector No. 2 (on the driver's seat wire harness)
Test point 2	SRS unit connector B (39P) No. 24

Courtesy of HONDA, U.S.A., INC.

Is there 1.0 Ω or less?

YES

The FLBC/WARNING SRS UNIT wire is OK. Go to step 6.

Open in the floor wire harness or the driver's seat wire harness; replace the faulty harness, then clear the DTC.

Open wire check (GND line)

-1. Measure the resistance between test points 1 and 2.

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

Courtesy of HONDA, U.S.A., INC.

Is there 1.0 Ω or less?

YES

Open in the floor wire harness or the driver's seat wire harness; check for a poor ground at G602. If the ground is OK, replace the faulty harness, then clear the DTC.