EXTENSION AS 1692063 - Caterpillar

Illustration 1 g01546403
Schematic of the "ATCH Universal Quick Coupler" solenoids
This diagnostic code is associated with the "ATCH Universal Quick Coupler" solenoids. The FMI 03 means that the ECM has determined that the voltage of the solenoid circuit is above normal. The possible causes of the diagnostic code are listed:
The solenoid has failed.
The energize circuit of the solenoids are shorted to the +battery circuit.
The hydraulic lock relay has failed.
The machine ECM has failed. This is unlikely.Note: The Machine ECM is equipped with LED indicators that serve as a self-diagnostic check. With the key start switch ON, the following can be determined by the ECM indicator lights: If all of the LED lights are Off, voltage is not being supplied to the Machine ECM. Check for power to the ECM. If the yellow LED is Flashing, a communication error exists on the "CAN" data-link circuit. If the yellow LED is constantly On, the Machine ECM software may be missing / not loaded. If the red LED is Flashing, the Machine ECM has failed and may need replacement. When this diagnostic code occurs, a warning is displayed on the Monitoring System and the Machine ECM disables the hydraulic system.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 1160 FMI 03 is active before performing this procedure.Note: Use the 146-4080 Digital Multimeter for the measurements in this procedure.System Response:The diagnostic code of CID 1160 FMI 03 will be logged in the internal memory of the Machine ECM.Test Step 1. CHECK THE ENERGIZE CIRCUIT OF THE SOLENOID FOR A SHORT TO THE +BATTERY CIRCUIT.
Turn the key start switch and the disconnect switch to the OFF position.
Disconnect the machine harness connector J2 from the solenoid at the ECM.
Place a jumper between contacts 3 (wire A588-GN(Green)) and 5 (wire E564-PK(Pink)) of the hydraulic lock on relay.
At the machine harness connector for the ECM, measure the resistance from contact J2-27 (wire A588-GN(Green)) to all contacts that are used in the machine harness connectors for the ECM. 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 to Test Step 2.
NOT OK - Each resistance measurement is not greater than 5000 ohms. There is a short in the machine harness. The short is between J2-27 (A588-GN(Green)) and the circuit that has a low resistance measurement. Repair: Repair the machine harness or replace the machine harness.STOPTest Step 2. CHECK IF THE DIAGNOSTIC CODE IS STILL ACTIVE.
Inspect the contacts and clean the contacts of the harness connectors.
Reconnect all harness connectors.
Remove the jumper that was placed in the previous test.
Turn the disconnect switch and the key start switch to the ON position.
Operate the machine.
Determine if the CID 1160 FMI