KENR9126 17
Troubleshooting Section
g02188453
Illustration 4
After all of the active diagnostic codes have been
displayed, the “Warning” lamp will be extinguished
for 2 seconds. The “Warning” lamp will flash twice in
order to indicate the start of the sequence that will
display the logged diagnostic codes. The process for
flashing logged diagnostic codes is identical to the
process for flashing active diagnostic codes.
Note: If there are no logged codes then the “551”
code will be flashed again.
After all of the codes have been displayed, the
“Warning” lamp will flash three times in order to
indicate that there are no further codes. Cycling the
keyswitchtwicewithinaperiodof3secondswill
start the process again. All codes will be displayed in
ascending numerical order.
Refer to the Troubleshooting Guide, “Diagnostic
Code Cross Reference” for the flash code that is
related to the diagnostic code.
i04010409
Replacing the ECM
NOTICE
Care must be taken to ensure that fluids are contained
during performance of inspection, maintenance, test-
ing, adjusting and repair of the product. Be prepared to
collect the fluid with suitable containers before open-
ing any compartment or disassembling any compo-
nent containing fluids.
Dispose of all fluids according to local regulations and
mandates.
NOTICE
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened
component life.
The engine is equipped with an Electronic Control
Module (ECM). The ECM contains no moving parts.
Follow the troubleshooting procedures in this manual
in order to be sure that replacing the ECM will correct
the fault. Verify that the suspect ECM is the cause
of the fault.
Note: Ensure that the ECM is receiving power
and that the ECM is properly grounded before
replacement of the ECM is attempted. Refer to the
Schematic Diagram.
AtestECMcanbeusedinordertodetermineifthe
ECM on the engine is faulty. Install a test ECM in
place of the suspect ECM. Install the flash file into
the test ECM. Program the parameters for the test
ECM. The parameters must match the parameters in
the suspect ECM. Refer to the following test steps for
details. If the test ECM resolves the fault, reconnect
the suspect ECM. Verify that the fault returns. If the
fault returns, replace the ECM.
Use the Electronic Service Tool to read the
parameters in the suspect ECM. Record the
parameters in the suspect ECM. Install the flash file
into the test ECM. After the ECM is installed on the
engine, the parameters must be programmed into
the test ECM.
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