Massey Ferguson 000723.08 – ECU: Camshaft Speed Sensor Signal Deviation

The Engine Control Unit (ECU) has detected a large signal deviation between the crankshaft position sensor and the camshaft position sensor. These sensors provide critical rotational speed and position data for timing fuel injection and ignition events. A deviation indicates that the engine's timing is out of sync, which can negatively affect proper engine operation and performance.

• 4707
• 4708
• 4709
• 4710
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613
• 5710SL
• 5711SL
• 5712SL
• 5713SL
• 6485
• 6490
• 6495
• 6497
• 6499
• 7485
• 7490
• 7495
• 7614
• 7615
• 7616
• 7618
• 7619
• 7620
• 7622
• 7624
• 7626
• 7714
• 7715
• 7715S
• 7716
• 7716S
• 7718
• 7718S
• 7719
• 7720
• 7720S
• 7722
• 7722S
• 7724
• 7724S
• 7726
• 7726S
• 8450
• 8460
• 8470
• 8480

1. 1

   Visually inspect the wiring harnesses and connectors for both the camshaft and crankshaft speed sensors for damage, corrosion, or loose connections

2. 2

   Check the resistance of the speed sensor (with ignition off and sensor disconnected). Resistance should be approximately 450 ohms +/- 20 ohms at room temperature (specifically noted for MF5400/6400/7600 series)

3. 3

   Perform a mechanical inspection to detect any leaks or blockages that could affect the sensor's operation

4. 4

   Connect a diagnostic service tool to the tractor's CAN bus to read detailed fault information from the EEM4 controller

1. 1

   Read and Record the Trouble Code

   Use a scan tool to confirm the presence of the 000723.08 fault code.

2. 2

   Locate the Sensor

   Refer to the vehicle's service manual for the exact location of the camshaft speed sensor. It is typically located on the engine block near the camshaft.

3. 3

   Disconnect the Battery

   To prevent electrical damage, disconnect the negative battery terminal.

4. 4

   Gain Access

   It may be necessary to remove guards, heat shields, or wiring harness clips to access the sensor.

5. 5

   Disconnect the Electrical Connector

   Carefully unplug the electrical connector from the sensor.

6. 6

   Remove the Old Sensor

   Remove the mounting bolt holding the sensor in place. Gently twist and pull the sensor to remove it from the engine. Be prepared for a small amount of oil to leak out.

7. 7

   Install the New Sensor

   Lubricate the O-ring on the new sensor with clean engine oil. Insert the new sensor into the engine and tighten the mounting bolt to the manufacturer's specified torque.

8. 8

   Reconnect and Reassemble

   Reconnect the electrical connector and reassemble any components that were removed to gain access. Reconnect the battery.

9. 9

   Clear Codes and Test

   Use a scan tool to clear the fault code. Start the engine and let it run to ensure the issue is resolved and the check engine light does not reappear.