Case IH 2768 - Dec – DEC: CAN 2 - CRPM_Sts Error

This code indicates a communication or status error on the Controller Area Network 2 (CAN 2) related to the Constant RPM (CRPM) system. The Engine Controller is not receiving the expected "Status" signal from the CRPM switch over the CAN 2 network.

• MAXXUM T4E
• Maxxum
• Puma
• Farmall 90N
• Farmall 100N
• Farmall 105U

1. 1

   Inspect the CRPM switch on the instrument panel/console for physical damage, sticking, or internal shorts

2. 2

   Inspect the CAN 2 network wiring harness between the cab/instrument cluster and the DEC for continuity, corrosion, or breaks

3. 3

   Verify that auto modes (such as Autoshift and CRPM) are properly enabled in the instrument cluster settings

1. 1

   Test the CRPM switch

   Test the CRPM switch for proper voltage/resistance.

2. 2

   Replace the CRPM switch

   Replace the CRPM switch if it tests faulty.

3. 3

   Repair or replace the CAN 2 wiring harness

   Repair or replace the CAN 2 wiring harness if a break or short is found between the switch and the DEC.