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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: 133 of 549
DTC’s confirmation:-
After rectification, ensure the following points 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:-
Fig128: Frontal Impact Passsenger sensor is usually located in the radiator support vertical member.
+
V
12
Battery
A23
CAN H
Ignition Sw itch
CAN L
A12
A7
-
RESTRAINTS
CONTROL
MODULE
Passenger
Front
Impac
t
Sensor
A1
A2
Fuse 10A
B7
B8
PFIS -
PFIS+
Vbat