Mahindra Genio DC BS-III Diagnostic Manual page 7

Diagnostic Manual (EMS)
MAN-00139-7
Genio DC BS-III & BS-IV
August 2011/Rev 1
Warranty & Other Information
All failures/complaints encountered on EMS ECU and/or ICU controllers need to be
reported through a Common Rail Failure Report (CrFR)/Service Complaint Report (SCR).
Replacement of any of the EMS ECU or ICU controller requires approval of the TEKline.
#
Ensure that a TAR is raised in the TEKnet website for approval, attaching the CrFR/SCR.
While raising a warranty claim, the TAR no should be quoted on the warranty claim.
# Only a trained and certified CoTEK can raise a TAR (in TEKnet website)
IQA/IMA Code Programming
An ECU controlled engine needs precise metering of fuel. Due to manufacturing
tolerances, each injector deviates slightly from its idealized behavior. Thus, each injector
has a correction factor, which is engraved on top of it, in the form of a 6-character
alphanumeric code. This is known as an IQA code/IMA code. For optimal performance of
the engine, the ECU needs to know the IQA code/IMA code of each injector. This
information is programmed into the ECU when the vehicle is manufactured. However, if
you need to replace an injector(s), then the IQA code/IMA code for that new injector has
to be updated in the ECU. The cylinder number is with respect fan.
As a first step, you need to select the cylinder number of the injector being replaced. After
the cylinder number is selected by clicking on the check-button next to the number, the
IQA code/IMA code should be entered in the box provided.
Click the button to the right of the text box. If the Injector code is valid and accepted by
the ECU, a message is displayed, indicating that the operation is performed successfully.
A message "Invalid IQA code" will be displayed , if an incorrect IQA/IMA code is keyed in.
IQA codes are case sensitive.
Programming IQA codes is an extremely important activity. In order to ensure that the
correct code has been entered and that it has been entered in the correct cylinder, SMART
tester allows you to verify the codes that you have entered.
Select an injector, and click the button below the "Verify" line in figure. The IQA codes
present in the ECU will be read back and displayed in the text box before this button. It is
recommended that you carry out the verification activity whenever you change an IQA
code.
PLEASE ENSURE TO PROGRAM IQA/IMA CODES WHEN YOU REPLACE AN INJECTOR, ECU
or ENGINE.
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The repair methods given by the manufacturer in this document are based on the technical specifications, current at the time of release. The methods may be modified as a result of changes
introduced by the manufacturer in the production of the various component units and accessories from which the vehicles are manufactured. The reproduction, translation, transmission, in part of or
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