Troubleshooting

7. Start the engine and check for proper operation.
Check that there are no active diagnostic codes.
i06535538
ECM - Replace
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
to be sure that replacing the ECM will correct the
problem. Verify that the suspect ECM is the cause of
the problem.
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.
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 new ECM. After the ECM is installed on the
engine, the parameters must be programmed into the
new ECM.
NOTICE
If the flash file and engine application are not
matched, engine damage may result.
Perform the following procedure to replace the ECM.
1. Connect the electronic service tool to the
diagnostic connector.
2. From the menu bar go to the following menu
options:
• Service
• Copy Configuration
• ECM Replacement
3. Click “Load From File” at the bottom of the screen.
4. Once the ECM data has been loaded, click “Save
to File” at the bottom of the screen. Select a folder
location and click “Save” .
5. Remove the ECM. Refer to Disassembly and
Assembly, “Electronic Control Module - Remove
and Install”.
6. Install the replacement ECM. Refer to
Disassembly and Assembly, “Electronic Control
Module - Remove and Install”.
7. Install the software on the new ECM. Refer to
Troubleshooting, ECM Software - Install.
8. From the menu bar go to the following menu
options:
• Service
• Copy Configuration
• ECM Replacement
9. Click “Load From File” at the bottom of the screen.
10. Select the correct ECM replacement file. Check
that the date and time stamp matches that of the
desired replacement file and click “OK” .
11. Click “Program ECM” at the bottom of the screen.
12. Once the “Programming Complete” dialog box
appears on-screen, click “OK” .
13. Check for logged diagnostic codes.
i06233954
Electrical Connectors - Inspect
Most electrical faults are caused by poor
connections. The following procedure will assist in
detecting faults with connectors and with wiring. If a
fault is found, correct the condition and verify that the
fault is resolved.
Intermittent electrical faults are sometimes resolved
by disconnecting and reconnecting connectors. It is
very important to check for diagnostic codes
immediately before disconnecting a connector. Also
check for diagnostic codes after reconnecting the
connector. If the status of a diagnostic code is
changed due to disconnecting and reconnecting a
connector, there are several possible reasons. The
likely reasons are loose terminals, improperly
crimped terminals, moisture, corrosion, and
inadequate mating of a connection.
Follow these guidelines:
• Never break the insulation of a wire in order to
access a circuit for measurements.
• If a wire is cut, always install a new terminal for the
repair.
260 UENR0612-07
Service
This document has been printed from SPI2. NOT FOR RESALE