DTC B1157
Precautions: Precautions for Diagnosing Trouble · Precautions for Control Systems · General safety (00)
DTC Detecting Condition and Trouble Area
| DTC detecting condition | Trouble area |
|---|---|
|
B1157: Air Bag Deployment Signal Input Air bag deployment signal is fed from SDM to BCM. |
•SDM
•BCM |
DTC Confirmation Procedure
1)Set ignition “ON”.
2)Set ignition “OFF”.
3)Set ignition “ON”.
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
DTC recheck
1)Clear DTC.
2)Perform DTC Confirmation Procedure and then recheck DTC.
Is DTC B1157 still detected?
|
Go to Step 2.
|
End. (Air bag has deployed in past. (DTC is not cleared))
|
| 2 |
DTC recheck
1)Replace SDM.
2)Perform DTC Confirmation Procedure and then recheck DTC.
Is DTC B1157 still detected?
|
Replace BCM and recheck DTC.
|
End. (SDM was faulty)
|