BUSHING-LOCK 4681078 - Caterpillar

Illustration 1 g02720318
Second gear clutch solenoid connections
Illustration 2 g02728876
Location of the forward clutch solenoid (No. 4)This diagnostic code is associated with the second gear clutch solenoid. The FMI 03 means that the ECM has determined that the voltage of the solenoid circuit is above normal.The possible causes of this diagnostic code are listed:
The energize circuit of the solenoid is shorted to a voltage source.
The ECM has failed. An ECM failure 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 1404 FMI 03 is active before performing this procedure.System Response:When this code is active, the implement lockout solenoid is deactivated (LOCKED) unless the limp home mode is selected. All implement functions are disabled. Test Step 1. CHECK THE ENERGIZE CIRCUIT OF THE SOLENOID FOR A SHORT
Turn the key start switch and the disconnect switch to the OFF position.
Disconnect the machine harness connectors from the solenoid and the ECM.
At machine harness connector for the ECM, measure the resistance from the solenoid signal contact J1-49 (wire 755-OR) to all of the other J1 and J2 connector contacts. Expected Result:Each resistance measurement is greater than 5000 ohms.Results:
OK - Each resistance measurement is greater than 5000 ohms. The machine harness is correct. Proceed