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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: 49 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 & ensure connector for proper functionality of IMV
Refit the connector.
If found damage
then rectify / replace
Go to next step
2
Check whether IMV is Stuck Open
Rectify / Replace
IMV
Go to next step
3
Check for IMV related faults (P0251, P0253, P0255)
If found refer
rectification process
for IMV fault
Go to next step
4. Check for Rail pressure (HP) sensor faults (P0192, P0193)
if present uses the
rectification process
of P0192; P0193
fault
Go to next step
5
Are there any pins backed out from the EMS ECU
Connector? Check ECU pins and connector if found faulty.
Rectify/Replace
Connectors
Go to next step
6
Check the Injectors fault.
Rectify injector
related faults
Go to next step
7
Is Rail discharge valve not functioning? Damaged?
Rectify / Replace rail
discharge valve
Go to next step
8
Check HP circuit whether its faulty or not
if problem identified
refer HP circuit
check and
rectification
procedure
Go to next step
9
Check and ensure correctness of software in ECU
Check ECU
software version
Go to next step
10 Ensure battery voltage is more than 12V at engine idle
Rectify/replace
battery
Go to Step 10
11 Fault Still Persists?
Call the Hot line / TS
Follow the steps
again for
reconfirmation
DTC’s confirmation (checks before handing over vehicle to customer):
x
Rail pressure at ignition key on is < 10 bar,
x
By removing the rail pressure sensor connector, Diagnostic tool shall display rail pressure value of 2000 bar,
x
High pressure leak detection test can be carried out
x
Please drive the vehicle on road with adequate fuel in tank, check and ensure rail pressure feed-back follows the
demand continuously. Check the errors at Ignition ON, engine running @ Idle & Fly-up with different vehicle
speeds also
x
Confirm that there are no errors logged by EMS before handing over the vehicle back to customer.