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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: 144 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.
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Check & Rectify the connector / Injector Harness continuity, connector oxidation etc
Trouble Shooting:
Step Checks
IF YES
IF NO
1
Adequate fuel available in Tank?
Go to Next Step
Refuel the vehicle
and try to crank
2
Is there any air entry in the low pressure fuel line?
Clear the same
Go to Next Step
3
Is fuel filter clogged?
Rectify / Replace
Fuel filter
Go to Next Step
4
Are there any leakages in the High Pressure fuel line?
Rectify the leakages Go to Next Step
5
Check the connector of IMV fitted properly for proper
functionality of IMV. Is the fitment proper?
Reconnect the
connector.
Go to Next Step.
6 Check for IMV related faults (P0251, P0253, P0255)
If found refer
rectification process
for IMV fault
Go to Next Step
3. Check for Rail pressure (HP) sensor faults (P0192, P0193)
if present uses the
rectification process
of P0192; P0193
fault
Go to Next Step
4
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
5
Check the Injectors for mechanical damage and check if
RVD (Rail Valve Discharge) is happening
Rectify / Replace
Injectors, Replace /
Rectify RVD valve
Go to Next Step
6
Check HP circuit whether its faulty or not
if problem identified
refer HP circuit
check and
rectification
procedure
Go to Next Step
7
Check and ensure correctness of software in ECU (by
reading R16 part numbers)
Check ECU
software version
Go to Step 8
8
Check whether the HP pump is sucking fuel from Fuel Tank Go to Next Step
Perform necessary
repairs
9
check whether rail pressure sensor signal EMS ECU pin 40
is short circuited to ground or battery?
Rectify the wiring
connections as per
the circuit schematic
Go to Next Step
10 Ensure battery voltage is more than 11V at engine idle
Rectify/replace
battery
Go to Next Step
11 Perform the leak detection test for leakages? Is Test result
Negative
Perform necessary
repairs to arrest
leakages
Go to Next step
12 Fault Still Persists?
Call Hot Line
Follow the steps
again for
reconfirmation