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OSPREY- Application
DTC Troubleshooting Data
Version: 4.0
Date: 10-02-2017
Prepared by: Mithipati Prasad
Checked by: G S Raju / Senthilnathan S
Page: 517 of 654
Copyright ©
TATA MOTORS Ltd.
This document must not be used in any way, such as copying and redistributing to third parties, without the consent of author.
Trouble Shooting:
Step Checks
IF YES
IF NO
1.
Check water in fuel sensor connector is connected to the
sensor or not
Go to step 2
Connect the WIF
sensor connector to
sensor.
2.
Is there continuity exists between WIF sensor pin 1and
EMS ECU pin 74 && WIF sensor pin 2 and EMS ECU pin
59.
Go to step 3
Rectify the wiring
harness
connections as per
the schematic
3.
Check electrical continuity of wiring harness between ECU
and water in fuel sensor as per circuit schematics. correct if
necessary
Go to step 4
Rectify the wiring
harness
connections as per
the schematic
4.
Check whether EMS ECU pin 74 shorted to ground?
Go to step 5
Rectify the wiring
harness
connections as per
the schematic
5
Are there any pins damaged at EMS ECU Connector
Replace the
connector or wiring
harness
Go to step 6
6
Are there any pins backed out from the EMS ECU
Connector
Rectify/Replace
Connectors
Go to Step 7
7
Is WIF sensor switch connector damaged or pins got
backed out.
Rectify/Replace
Connectors
Go to step 8
8
If fault still persists,
then replace sensor
and if fault still
persists then call
hotline
Follow the above
procedure again for
reconfirmation
DTC’s confirmation (checks before handing over vehicle to customer):
x
Drain Sedimentor contents in a bowl and check for water presence in diesel; If water is present; drain complete
fuel from Sedimentor and fuel filter
x
Check the errors at Ignition ON, engine running @ Idle & Fly-up with different vehicle speeds also
x
If error present, then rectify the errors. Confirm that there are no errors logged in EMS before handing over
vehicle to customer