DTC 11-Bx: Short to Ground in the Driver's Airbag Second 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 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 .
- 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.
- 1. 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 .
Is DTC 11-Bx 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.
- 2. Shorted wire check (LA2+, LA2- lines) 1:
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 A (39P) 4. Measure the resistance between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode SRS unit connector A (39P): disconnected Test point 1 SRS unit connector A (39P) No. 4 Test point 2 Body ground Test point 1 SRS unit connector A (39P) No. 5 Test point 2 Body ground Is there an open circuit, or at least 1 MΩ?
YES
The LA2+ and LA2- wires are OK. Replace the SRS unit .
NO
Go to step 3.
- 3. Shorted wire check (LA2+, LA2- lines) 2:
1. Remove the access panel from the steering wheel .
2. Disconnect the following connector.
Driver's airbag inflator 4P connector (on the cable reel harness) 3. Measure the resistance between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode SRS unit connector A (39P): disconnected Driver's airbag inflator 4P connector (on the cable reel harness): disconnected Test point 1 SRS unit connector A (39P) No. 4 Test point 2 Body ground Test point 1 SRS unit connector A (39P) No. 5 Test point 2 Body ground Is there an open circuit, or at least 1 MΩ?
YES
The LA2+ and LA2- wires are OK. Faulty driver's airbag second inflator; replace the driver's airbag , then clear the DTC.
NO
Go to step 4.
- 4. Shorted wire check (LA2+, LA2- lines) 3:
2. Disconnect cable reel connector B (4P) on the dashboard wire harness.
3. Measure the resistance between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode SRS unit connector A (39P): disconnected Driver's airbag inflator 4P connector (on the cable reel harness): disconnected Cable reel connector B (4P) (on the dashboard wire harness): disconnected Test point 1 SRS unit connector A (39P) No. 4 Test point 2 Body ground Test point 1 SRS unit connector A (39P) No. 5 Test point 2 Body ground Is there an open circuit, or at least 1 MΩ?
YES
The LA2+ and LA2- wires are OK. Short to ground in the cable reel; replace the cable reel , then clear the DTC.
NO
Short to ground in the dashboard wire harness; replace the dashboard wire harness, then clear the DTC.
