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SRS / Airbag
ECU – DTC Troubleshooting Guide
Version: 14.0
Date: 14-February-2017
Prepared by:Airbag COC Review &
Approved by:Sanjeev VM
Page: 116 of 549
B100E-12:- Frontal Impact Driver sensor circuit short to battery
Overview:-
ISO Code
B100E12
Customer Symptom
SRS Warning Lamp continuously ON in Instrument Cluster.
Fault Effects (On Vehicle)
Front Crash detection performance is degraded &
Front Driver angular crash detection is not guaranteed.
Lamp Status (If Any)
SRS Warning Lamp continuously ON in Instrument Cluster.
Fault Detection Condition
This fault gets logged if any of the high side (B5) or low side pin
(B6) of Frontal Impact Driver sensor gets shorted with battery
line.
Normal Operating Condition
No short with battery should be present.
Probable Trouble Area
Related wiring Harness, connector or terminals
Frontal Impact Driver sensor
Airbag Wiring Harness
Airbag ECU
Healing Condition
Remove the short to battery.
Component Details:-
Frontal Impact Sensor
:- It is usually located in the radiator support vertical member. Front impact sensors collect the
data necessary to make decisions about Airbag deployment.
Airbag ECU
:- It is fitted in the floor of central console in the car. The Airbag Electronic Control Unit (ECU) controls the
deployment system to allow an appropriate igniting of the Airbags and belt pre-tensioners to restrain the driver and
passengers.
Preliminary Checks:-
1. Check Battery Voltage (12 V & above)
2. Check for any faults in Airbag Warning Lamp indication in Instrument Cluster.
3. Ensure the proper locking of Airbag ECU wiring harness connectors in the vehicle by the locki ng sound.
Trouble Shooting:-