IT12F, IT14F, IT18F, IT24F and IT28F Integrated Toolcarriers and 910F, 918F, 924F and 928F Wheel Loaders Power Train Electronic Control System Caterpillar

Prior to replacement of the ECM, ensure that the replacement is absolutely necessary. The ECM is seldom the cause of a diagnostic code. Always check that power is available to the ECM. Battery voltage is required between 1 and 2 of the machine harness. Check the connectors for damage.

Be sure that any replacement ECM is the correct part number. This is important because of the variety of applications for this ECM.

Procedure

1. Turn the key start switch OFF.

2. Remove the transmission ECM.

3. Make sure that the replacement ECM has the correct part number.

4. Connect the machine harness to the ECM.

5. Install the replacement ECM.

6. Turn the key start switch to the ON position.

7. Turn the key start switch ON.

8. Verify that the machine code matches Table 1.

Table 1

MACHINE CODE
Sales Model	Machine Code
N/A	11
918F	13
928F	14
IT18F	15
IT24F	15
924F	15
IT28F	16
910F	17
IT12F	18
IT14F	19

If the ECM is NOT programmed, the service tool will indicate the problem. An ECM that is NOT programmed must be programmed before use. Use the Caterpillar Electronic Technician (ET) service tool to flash the ECM.

If the ECM is programmed, the service tool provides access to the expected areas of the ECM.

Select the "Service" menu item with the service tool. Select the "Configuration" function. A list of items will appear. Select the proper items and program the correct information. This information is available from the old ECM or from your dealer.

No calibrations are required.