CLAAS Id7764h / 7764h (655 02) – Engine Control Module / ENG (A15): Reference of the injector of cylinder n°5 non valid.

The engine control unit has detected an invalid calibration code or an incorrect part number reference for the electronic fuel injector installed in cylinder #5. The engine may run with difficulty, run rough, or misfire due to the invalid calibration data.

• CLAAS AXION 800 Series
• Axion 810
• Axion 820
• Axion 830
• Axion 840
• Axion 850
• CLAAS ARION 600 Series
• Arion 610
• Arion 630
• Arion 640

1. 1

   Check the Engine Module ENG (A15): Verify that the ECU is communicating properly on the CAN bus and that its software is not corrupted.

2. 2

   Check the Electronic Injector (Y320-5): Inspect the fuel injector for cylinder #5 (component identifier Y320-5).

3. 3

   Verify Calibration Data: Ensure that the calibration code physically printed on the cylinder #5 injector matches the code programmed into the engine ECU.

4. 4

   Wiring & Connections: Verify the harnesses connecting the ENG (A15) module to the Y320-5 injector for continuity and secure connections.

1. 1

   Connect a compatible diagnostic interface (such as CLAAS CDS or John Deere Service ADVISOR) to the tractor.

   Connect diagnostic interface

2. 2

   Navigate to the Engine ECU (ENG A15) module settings.

   Navigate to ECU settings

3. 3

   Read the alphanumeric calibration/trim code printed directly on the top of the cylinder #5 injector (Y320-5).

   Read calibration code

4. 4

   Enter and program this exact calibration code into the Engine ECU for cylinder #5.

   Program calibration code

5. 5

   Clear the fault codes and cycle the key.

   Clear codes and cycle key

6. 6

   Start the engine and verify that it runs smoothly.

   Verify engine operation

7. 7

   If the ECU rejects the code, or if the injector was previously replaced with an incorrect/incompatible part number, the injector must be physically replaced with the correct OEM part, followed by programming the new injector's calibration code into the ECU.

   Replace injector if necessary