Section 04 ENGINE MANAGEMENT (SDI)
Subsection 03 (COMPONENT INSPECTION, REPLACEMENT AND ADJUSTMENT)
WARNING
Perform a fuel high pressure test and ensure
that there is no leak. Refer to FUEL SYSTEM.
ENGINE CONTROL MODULE
(ECM)
General
Prior to replacing a suspected ECM, ensure that all
the recommendations in the general introduction
of this section have been followed.
IMPORTANT: When the ECM is replaced, the
tether cord cap(s) and the Closed Throttle must
be reprogrammed/reset. Refer to their specific
section for adjustment.
To allow transferring the previous recorded infor-
mation from the old ECM to the new one, use the
vehicle communication kit (VCK) with the B.U.D.S.
software. Use Replace ECM in the ECM menu.
Follow instructions provided by the help system.
NOTE: If the old ECM can still communicate, it
must be read inside B.U.D.S. prior to removing it
from the vehicle to carry vehicle information and
history to the new ECM.
ECM Replacement
Disconnect battery cables.
WARNING
Battery BLACK (-) cable must always be dis-
connected first and connected last.
Disconnect both connectors from ECM.
A33I0HA
1
2
1. ECM
2. Retaining screws
Unscrew all retaining screws and remove the en-
gine ECM from its support.
Install the new ECM to the support.
Reconnect ECM connectors to ECM, and then bat-
tery cables.
Transfer the data from the previous ECM to the
new one using B.U.D.S. then proceed with the
required resets and reprogram tether cord cap(s),
ifyouwereunabletotransferthedata.
NOTE: If data cannot be transferred, manually en-
ter information in Vehicle tab.
After performing the required resets, ensure to
clear all faults from the newly replaced ECM.
Start the engine and increase engine speed above
6000 RPM to be sure no fault appears.
144 mmr2005-126
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