SPOOL 3S9968 - Caterpillar

Illustration 1 g01113775Implement Enable RelayThis diagnostic code is recorded when the ECM reads the current of the relay as below normal (open circuit).The possible causes of this diagnostic code are:
The energize circuit of the relay is open.
The return circuit of the relay is open.
The relay is malfunctioning.
The ECM has failed. This is unlikely.System Response:The results of this diagnostic code are:
Propel diagnostic code lamp on the machine operator's station will be ON.
The vibrator and grade slope will not be powered.Note: Ensure that the diagnostic code CID 041 FMI F05 for the relay is on hold and that the diagnostic code present indicator on the ECM display is ON.Test Step 1. Check Relay
Turn the key start switch to the ON position. Do not start the engine.
Disconnect the machine harness from the relay.
At the machine harness connector for the relay, place a jumper from connector contact number 1 to connector contact number 2.
Observe the status of the diagnostic code present indicator. Expected Result:When the jumper is installed, the diagnostic code present indicator should turn OFF. When the jumper is removed, the diagnostic code present indicator should turn ON.Results:
OK - The diagnostic code present indicator does turn OFF when the jumper is installed and does turn ON when the jumper is removed. Repair: The circuit is correct. The relay is malfunctioning. Replace the relay.STOP
NOT OK - The diagnostic code present indicator does not turn OFF when the jumper is installed or does not turn ON when the jumper is removed.Repair: There may be an open circuit in the machine harness. Proceed to Test Step 2.Test Step 2. Check Harness For Open Circuits
Turn the key start switch to the OFF position.
Disconnect the machine harness connector from the ECM.
At the machine harness connector for the relay, place a jumper from connector contact number 1 to connector contact number 2.
At the machine harness connector, measure the resistance from the signal circuit at connector contact 37 (wire P947-BU(Blue)) to the return circuit at connector contact 39 (wire P202-BR(Brown)). Expected Result:The resistance should measure less than 5.0 ohms (continuity).Results:
OK - The resistance does measure less than 5.0 ohms (continuity). Proceed to Test Step 3.
NOT OK - The resistance measures more than 5.0 ohms.Repair: There is an open in the implement relay circuit. The open is either in the energize signal circuit (wire P947-BU(Blue)) or in the return circuit (wire P202-BR(Brown)) of the machine harness. Repair the machine harness or replace the machine harness.STOPTest Step 3. Check To See If Diagnostic Code Remains
Clean the contacts of the harness connectors.
Reconnect all harness connectors.
Turn the key start switch to the ON position.
Enter service mode 1 on the ECM three digit display. Clear all inactive diagnostic codes.
Operate the machine.
Check to see if the CID 041 FMI F05 diagnostic code for the relay is present (diagnostic code present indicator ON). Expected Result:The CID 041 FMI F05 diagnostic code for the relay is not present.Results:
OK - The CID 041 FMI F05 diagnostic code for the relay is not present. The machine harness and the