TUBE AS 2741666 - Caterpillar

Illustration 1 g02776416
Schematic of the Torque Converter Lockup Clutch solenoid
This diagnostic code is associated with the Torque Converter Lockup Clutch solenoid. An FMI 03 means that the ECM has determined that the voltage of the solenoid circuit is above normal. Possible causes of the diagnostic code are:
The energize circuit of the solenoid is shorted to another power supply circuit.
The ECM has failed. This condition is unlikely.Note: The following test procedure may create other diagnostic codes. Ignore these created diagnostic codes and clear these diagnostic codes when the original diagnostic code has been corrected. Ensure that the diagnostic code of CID 0679 FMI 03 is active before performing this procedure.Note: Use the 146-4080 Digital Multimeter for the measurements in this procedure.Test Step 1. CHECK THE SOLENOID ENERGIZE CIRCUIT FOR A SHORT.
Turn the key start switch and