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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: 375 of 549
B100C-4A:- Driver Side Peripheral sensor Incorrect component installed
Overview:-
ISO Code
B100C4A
Customer Symptom
SRS Warning Lamp continuously ON in Instrument Cluster.
Fault Effects (On Vehicle)
Driver Side crash detection performance is degraded &
Driver Side 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 a wrong sensor with different part
number is connected in place of Driver Side peripheral
sensor.
Normal Operating Condition
Sensor with correct TML Part number as per VC should be
connected in place of Driver Side peripheral sensor.
Probable Trouble Area
Related wiring Harness, connector or terminals
Driver Side peripheral sensor
Airbag ECU
Airbag Wiring Harness
Healing Condition
Sensor with correct TML Part number as per VC should be
connected in place of Driver Side peripheral sensor.
Component Details:-
Driver Side peripheral Sensor
: - These sensors are mounted on right side “B” pillar at the bottom end.
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 locking sound.
4.
Check whether the Driver side peripheral sensor is connected properly to the wiring harness. Ensure
the proper locking of the Driver side peripheral sensor to the wiring harness connector.
Trouble Shooting:-