TH220B, TH330B, TH340B, TH350B, TH355B, TH360B, TH460B, TH560B and TH580B Telehandlers Caterpillar

This diagnostic code is recorded when the voltage of the backup battery is between 1.5 DCV and 1.7 DCV. This diagnostic code may result in the following conditions:

• The loss of stored data

• The loss of the real time clock

Test Step 1. VERIFY THE DIAGNOSTIC CODE.

1. Turn the disconnect switch to the ON position.

2. Connect the ET to the ECM and clear the diagnostic codes.

3. Determine if CID 0817 FMI 04 is present.

Expected Result:

CID 0817 FMI 04 is present.

Results:

• YES - The diagnostic code is present. The internal battery for the Machine ECM has a low voltage.

  Repair: The battery in the Machine ECM cannot be replaced. The entire ECM must be replaced. Refer to Testing and Adjusting, "Electronic Control Module (ECM) - Replace".

  Stop.

• NO - The code is no longer present. The internal battery in the Machine ECM is no longer below voltage. Stop.