DTC B0050-13 (2017 2018 2019 2020)
DTC B0050-13 : Open or Increased Resistance in the Driver's Seat Belt Buckle Switch
- Before doing this troubleshooting procedure, review SRS Precautions and Procedures , General Troubleshooting Information , and Battery Terminal Disconnection and Reconnection. - Refer to: Battery Terminal Disconnection and Reconnection .
| 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. 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
-1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Disconnect the driver's seat belt buckle switch 2P connector (A) on the driver's seat wire harness.
- 3. Connect terminals A and B with a jumper wire.
Terminal A Driver's seat belt buckle switch 2P connector (female terminals) No. 1 (on the driver's seat wire harness): Terminal B Driver's seat belt buckle switch 2P connector (female terminals) No. 2 (on the driver's seat 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)
-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 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 Vehicle OFF (LOCK) 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 (female terminals) No. 1 (on the driver's seat wire harness): Test point 2 SRS unit connector B (39P) No. 29 - Refer to: SRS Unit Connector for Inputs and Outputs (2017 2018 2019 2020), Is there 1.0 Ω or less?
YES
The FLBC wire is OK. Go to step 4.
NO
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 Vehicle OFF (LOCK) 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 (female terminals) No. 2 (on the driver's seat wire harness): Test point 2 Body ground Is there 1.0 Ω or less?
YES
Faulty SRS unit or poor connection at SRS unit connector B (39P) and the SRS unit. Check the connection; if the connection is OK, check for any authorized service information related to the DTCs or symptoms you are troubleshooting or replace the SRS unit - Refer to: SRS Unit Removal and Installation (2017 2018 2019 2020) . If the DTC does not clear, replace the floor wire harness or the driver's seat wire harness.
NO
Open in the floor wire harness or the driver's seat wire harness; check for a poor ground at G604. If the ground is OK, replace the faulty harness, then clear the DTC.