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Q5 Project –EMS ECU/Component Replacement
Procedure
Q5 Project – EMS ECU/ Component Replacement Procedure
Doc No: 2921 02 224 A1730
Date: 24 July 2017
Revision: 0.1
Page 8 of 26
Prepared: Shashank Addala / Prasad
M
Checked: Prasad M
Approved: Satishkumar P
This document contains confidential information which is exclusive property of TML. The contents of this
document shall not be reproduced, or conveyed, or given to third parties in any manner without the consent
of TML.
4
EMS ECU, Component Replacement Procedure
4.1
ECM - Engine Control Module
(In case of old ECM communicates)
Description:
- See
Figure 1
: ECU Substitution Flow chart for more details. Routine concerning a component
to be perform in case of component substitution.
Substitution Type:
COMPONENT
Pre-Conditions:
1. ECU should be in Extended Diagnostic Session
2. Ignition ON (T15_st = 1)
3. Engine not running (NMotV = 0)
4. Gear in neutral position
Procedure To Be Followed:
Step 1:
IMA classification (for all injectors to be performed). IMA writing includes automatically ZFC1
procedure. IMA codes to be read from old ECM and written on new ECM.
Read IMA values from Old ECM after entering into Extended Diagnostic Session:
Command:
10 03
Command:
$ 22 38 2F
Write the Values in New ECM after entering extended Diagnostic Session and Taking Security Access:
Command:
10 03
Command:
$ 27 03
$ 27 04 XX XX XX XX (XX is the key calculated from the seed received through 27 02
command)
Command:
$ 2E 38 2F + 36 bytes
Step 2:
EEPROM DATA reading from old ECU after entering into Extended Diagnostic Session
Command:
10 03
Command:
$ 22 38 33
(for reading the data from EEPROM)
$ 22 38 43
(for reading the data from EEPROM)
Step 3:
EEPROM DATA writing in the new ECU after entering extended Diagnostic Session and Taking
Security Access:
Command:
$ 10 03
Command:
$ 27 03