Massey Ferguson V13 – Hydraulic Valve: Implausible Receive Message 1

The system has detected an implausible receive message, indicating an issue with the communication or data integrity within the hydraulic valve system. Specifically, Hydraulic Valve 1 has sent a message over the CAN bus that is unexpected, corrupted, or does not align with the system's current operational state, pointing to a data or electrical fault rather than a mechanical failure.

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• 7615
• 7616
• 7618

1. 1

   Visually inspect the wiring harness and connectors associated with Hydraulic Valve 1 for chafing, corrosion, pinched wires, or loose connections

2. 2

   Ensure the hydraulic control module and the valve itself have a stable power supply and a clean, tight ground connection

3. 3

   Perform a CAN bus termination resistor check (Ignition OFF) using a multimeter at the diagnostic connector or valve connector: Measure resistance between CAN High and CAN Low wires. A healthy bus reads ~60 Ohms; 120 Ohms indicates a missing resistor or open circuit; significantly lower than 60 Ohms indicates a short circuit or unwanted extra resistor

4. 4

   Perform CAN bus voltage checks (Ignition ON): Measure DC voltage between CAN High and chassis ground (should be 2.5-3.0V), and CAN Low and chassis ground (should be 2.0-2.5V). Voltages outside these ranges can indicate a short to power or ground on one of the CAN lines

5. 5

   Perform CAN bus resistance to ground check (Ignition OFF): Measure resistance between CAN High/CAN Low wires and chassis ground. Readings should be very high/open circuit; a low resistance reading indicates a short to ground in the wiring or within a connected electronic component

1. 1

   Address wiring and connection issues

   If preliminary checks reveal corroded connectors, damaged wiring, or incorrect CAN bus resistance/voltage, rectify these first. Clean connectors with electrical contact cleaner, repair damaged harness sections, and ensure all connections are secure.

2. 2

   Isolate the faulty component

   If wiring and CAN bus measurements are correct, swap the electrical connector with an adjacent, functioning hydraulic valve. If the 'Implausible Receive Message' fault moves to the new valve number, it confirms the electronic portion of the original valve is faulty.

3. 3

   Replace hydraulic valve block

   If the fault is isolated to the hydraulic valve assembly, replace the entire valve block for the specific hydraulic circuit as a single unit.