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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: 70 of 549
DTC’s confirmation:-
After rectification, ensure the following points by referring engine parameters using TML diagnostic tool before
handing over to customer.
a) Clear the DTC’s & make sure no DTC’s are present for Airbag system
b) Check whether any new DTC’s are getting qualified for repeated cranking.
c) Ensure the Airbag Warning Lamp Indication is continuously ON in Instrument Cluster for
4 seconds
after
Ignition ON
d) Ensure the Airbag Warning Lamp Indication goes OFF after
4 seconds
from Ignition ON.
Circuit Schematic Diagram:-
Schematic shown below for illustration
Battery>>>>>Fuse>>>>Relay>>>>>>>Sensor/Actuator>>>>>ECU
Component Location & Image:-
Fig65: Driver Seatbelt Pretensioner is located in the B-pillar and is connected with the seat belt buckle assembly.
+
V
12
Battery
A23
CAN H
Ignition Sw itch
CAN L
A12
A7
-
RESTRAINTS
CONTROL
MODULE
Belt
Tensioner
Front
Driver
A1
A2
Fuse 10A
A19
A20
BTFD-
BTFD+
Vbat