B1157

DTC B1157 (No. 1157): Air Bag Deployment Signal Input

Wiring Diagram

Refer to B1150 DTC B1150 (No. 1150): Air Bag Communication Circuit Malfunction.

DTC Detecting Condition and Possible Cause






Flow Test Description

Step 1: Check DTC for SDM.

DTC Troubleshooting



1. DTC check of SDM

Check DTC stored in SDM referring to DTC Check DTC Check:Except Advanced Air Bag or DTC Check DTC Check:Advanced Air Bag.

Is DTC B1021 detected?
YES
Go to DTC B1021: Front Air Bag Deployment Record:Except Advanced Air Bag or DTC B1021: Front Air Bag Deployment Record:Advanced Air Bag.
NO
Substitute a known-good BCM and recheck.