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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: 148 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.
x
Check & Rectify the connector / Injector Harness continuity, connector oxidation etc
Trouble Shooting:
Step Checks
IF YES
IF NO
1.
Check & ensure connector for proper functionality of IMV
Follow rectification
process for the
faults, before
proceeding further
Go to Step 2
2. Check for IMV related faults (P0251, P0253, P0255)
If found refer
rectification process
for IMV fault
Go to Step 3
3. Check for Rail pressure (HP) sensor faults (P0192, P0193)
if present uses the
rectification process
of P0192; P0193
fault
Go to step 4
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 Step 5
5
Check the Injectors fault.
Rectify injector
related faults and
ensure RVD is
happening
Go to Step 6
6
Check HP circuit whether its faulty or not. Also check
whether rail pressure sensor signal EMS ECU pin 40 is
short circuited to ground or not
if problem identified
refer HP circuit
check and
rectification
procedure.
Repair if any short
circuit to ground
fault found.
Go to Step 7
7
Check and ensure correctness of software in ECU
Check ECU
software version
Go to Step 8
8
Check Vacuum pump efficiency;
if problem noticed
replace with the new
vacuum pump
Go to Step 9
9
Ensure battery voltage is more than 12V at engine idle
Rectify/replace
battery
Go to Step 10
10 Fault Still Persists?
Call Hot line
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 shows rail pressure value of ~ 2000 bar,
x
High pressure leak detection test can be carried out.
x
Please drive the vehicle on road, check and ensure rail pressure feed-back follows the demand continuously.1.
Check adequate fuel is available in it.