SENSOR GP-TEMPERATURE 2654030 - Caterpillar

This diagnostic code will be recorded when the ECM reads the voltage for the circuit of the sensor supply as being below normal.The possible causes of the diagnostic code are listed below:
8 V supply, contact J2-12, is shorted to ground though a sensor or the harness.
10 V supply, contact J2-15, is shorted to ground though a sensor or the harness
The ECM has failed. The failure of the ECM is unlikely.System Response:The sensor supply is NOT available to any component that is powered by the sensor supply circuit.Note: Ensure that the CID 0269 FMI 01 is active.The possible results that may occur for this condition are listed below:
The TCS operates incorrectly.
Associated sensors log diagnostic codes.Test Step 1. CHECK FOR RELATED DIAGNOSTIC CODESA failed power supply circuit may cause the sensors within the circuit to set diagnostic codes.
Turn the key start switch and the disconnect switch to the ON position.
Check for active diagnostic codes that are associated with the sensors. The power supply circuit (10 V) may power the following sensors:
Transmission speed sensors.The power supply circuit (8 V) may power the following sensors:
Torque converter temperature sensor.
Transmission oil temperature sensor.Expected Result:The sensors for the power supply (10 V) are displaying diagnostic codes.Results:
YES - The sensors for the power supply (10 V) are displaying diagnostic codes. Proceed to Test Step 2.
NO - The sensors for the power supply (8 V) are displaying diagnostic codes. Proceed to Test Step 4.Test Step 2. CHECK FOR A SHORT TO FRAME GROUND IN THE WIRE HARNESS FOR THE 10 VOLT SUPPLY
Turn the key start switch and disconnect switch to the OFF position.
Disconnect the connector J1 and J2 from the ECM.
Measure the resistance between contact J2-15 of the wire harness and frame ground. Expected Result:The resistance should be greater than 5000 Ohms.Results:
OK - The resistance is greater than 5000 Ohms. The circuit is correct. Proceed to Test Step 3.
NOT OK - The resistance is less than 5000 ohms.Repair: The wire harness is shorted to ground. Repair the wire harness or replace the wire harness.STOPTest Step 3. CHECK FOR SHORT IN 10 VOLT SENSORS
Reconnect the connector J1 and J2.
Disconnect the sensors in the sensor power supply. Refer to the Electrical System Schematic for your machine.
Turn the key start switch and disconnect switch to the ON position.
Check for an active diagnostic code (CID 0269 FMI 01). Expected Result:The diagnostic code CID 0269 FMI 01 is not active.Results:
OK - The diagnostic code CID 0269 FMI 01 is not active.Repair: One of the sensors has failed. Reconnect the sensors one at a time until the diagnostic code becomes active. When the code becomes active, the last sensor that was reconnected has failed. Replace the sensor.STOP
NOT OK - The diagnostic code CID 0269 FMI 01 is active.Repair: It is unlikely that the ECM has failed. Exit this procedure and perform this diagnostic code procedure again. If the cause of the diagnostic code is not found, replace the ECM. Prior to replacing an ECM, always contact the technical communicator at your dealership's for