DTC B0070-1A: Decreased Resistance in the Driver's Seat Belt Tensioner (2018-19)
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 - Refer to: SRS Component Replacement/Inspection After Deployment .
- Review SRS Precautions and Procedures .
- Review General Troubleshooting Information
- Review information pertaining to 12 Volt Battery Terminal Disconnection and Reconnection
| DTC Description | DTC |
|---|---|
| B0070-1A Decreased resistance in the driver's seat belt tensioner |
DTC (SRS)
- 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 B0070-1A Decreased resistance in the driver's seat belt tensioner Is DTC B0070-1A 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 tensioner 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 left side B-pillar upper/lower trim.
- 4. Disconnect the following connector.
Driver's seat belt tensioner 2P connector (on the right side wire harness) - 5. Reconnect the negative cable to the 12 volt battery.
- 6. Clear the DTCs with the HDS.
- 7. Turn the vehicle to the ON mode, then wait for 10 seconds.
- 8. Check for DTCs with the HDS.
DTC Description DTC B0070-1A Decreased resistance in the driver's seat belt tensioner Is DTC B0070-1A indicated?
YES
Go to step 3.
NO
Short to another wire in the driver's seat belt tensioner; replace the driver's seat belt , then clear the DTC.
- Shorted wire check (LRP+ line to LRP- 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. Disconnect the following connector.
SRS unit connector B (39P) - 4. Measure the resistance between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Driver's seat belt tensioner 2P connector (on the right side wire harness): disconnected SRS unit connector B (39P): disconnected Test point 1 SRS unit connector B (39P) No. 20 - Refer to: SRS Unit Connector for Inputs and Outputs Test point 2 SRS unit connector B (39P) No. 21 - Refer to: SRS Unit Connector for Inputs and Outputs Is there an open circuit, or at least 1 MΩ?
YES
The LRP+ and LRP- wires are 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 (2018-19) .
NO
Short to another wire in the right side wire harness; replace the right side wire harness, then clear the DTC.