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TATA MOTORS Ltd.
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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: 222 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.
IS DTC
PRESENT?
CLEAR DTC
. TURN OFF & ON IGNITION &
CHECK FOR DTC’s
(at
least 2 to 3 times)
IS DTC
STILL
PRESENT
?
1.
READ EXISTING
AIRBAG
ECU
SYSTEM
CONFIGURATION
USING
EOL or
SERVICE TOOL.
2.
VERIFY WHETHER T
HE VEHICLE
IS HAVING
THE
CORRECT
AIRBAG ECU SYSTEM
CONFIGURATION
AS PER
THE
VC?
IS CONFIG.
CORRECT
?
WRITE
CORRECT
SYST EM
CONFIGURATION
IN
AIRBAG ECU USING
EOL
or SERVICE TOOL
YES
NO
NO
YES
NO
YES
TURN OFF
& ON THE
IGNITION
&
CHECK FOR
DTC’s
IS DTC
STILL
PRESENT?
NO
TURN OFF I GNITION &
CHECK THE VEHICLE
WIRING HARNESS
FOR ANY DEVICES
PASSENGER AIRBAG D
(
ISABLE INDICATOR
(
)
PADI
) PHYSICALLY PRESENT, BUT NOT
REQUIRED AS
PER VEHICLE REQUIREMENT.
STOP
RE-CONNECT
THE AIRBAG
ECU,
MODULE
& W/H IN
VEHICLE
YES
REMOVE THE WIRING FOR THE DEVICE NOT
REQUIRED (PADI) AS PER VEHICLE
REQUIREMENT.
IS VEHICLE WI
RING
CORRECT
?
YES
NO
START
B00D555::
Restraint
System
Passenger
Disable
Indicator
not
configured.
TURN ON IGNITION.
CONNECT THE
DIAGNOSTIC TOOL AND CHECK FOR DTC’s