GRILL GP-RADIATOR 4521492 - Caterpillar

Illustration 1 g00862664
Schematic for the Tilt Position Sensor (Joystick Control)This diagnostic code is recorded when the implement electronic control module (ECM) determines that the voltage for the position sensor (joystick control) is too low. The position sensor is a PWM sensor.The possible causes for this diagnostic code are listed:
The harness between the ECM and the position sensor has a short to ground.
The position sensor has failed.
The + battery circuit has an open.System Response:The machine response is listed:
The tilt function will be disabled until the diagnostic code is cleared. Also, the joystick control must be centered.Note: The following test procedure may create other diagnostic codes. Ignore these created diagnostic codes and clear the diagnostic codes when the original diagnostic code is corrected.Note: Ensure that the diagnostic code is active.Test Step 1. CHECK THE POSITION SENSOR.
Disconnect the position sensor from the harness.Expected Result:The service code is still active.Results:
YES - The position sensor is not the cause of the diagnostic code. Proceed to Test Step 2.
NO - The service code is inactive.Repair: The sensor has failed. Replace the sensor. Stop.Test Step 2. CHECK THE HARNESS.
The sensor remains disconnected.
Turn the disconnect switch to the OFF position.
Disconnect the harness from the ECM.
At the harness connector for the ECM, measure the resistance between connector J2-30 (wire H711-GN) and frame ground.Expected Result:The resistance should be greater than 5000 Ohms.Results:
YES - The resistance is greater than 5000 Ohms. Proceed to Test Step 3.
NO - The resistance is less than 5000 Ohms. Repair: The harness has failed. There is a short in the harness between the frame ground and the signal circuit (wire H711-GN). Repair the harness or replace the harness. Stop.Test Step 3. CHECK THE + BATTERY CIRCUIT
Ensure that the key start switch is in the OFF position.
The connector for the position sensor remains disconnected. The connector for the implement ECM remains disconnected.
Measure the resistance between contact J1-1 at the connector for the ECM and the contact 1 at the connector for the position sensor.Expected Result:The resistance measurement should be less than 5 ohms.Results:
YES - The resistance is less than 5 ohms. The harness is ok. Proceed to Test Step 4.
NO - The resistance is greater than 5 ohms. There is probably an open in the harness.Repair: Repair the harness or replace the harness. Stop.Test Step 4. CHECK THE GROUND CIRCUIT
Ensure that the key start switch is in the OFF position.
The connector for the position sensor remains disconnected. The connector for the implement ECM remains disconnected.
Measure the resistance between contact J1-15, J1-16 at the connector for the ECM and the contact 2 at the connector for the sensor.Expected Result:The resistance measurement should be less than 5 ohms.Results:
YES - The resistance is less than 5 ohms. The harness is ok.Repair: The harness circuit is correct. Ensure that the diagnostic code is still active. If the diagnostic code is active, it is unlikely that the ECM has failed. Exit this procedure and perform this troubleshooting procedure again. If the cause of the diagnostic code is not found, replace the