Case IH 1044-02 - DEC – DEC: Transmission Hydraulic Pump / Motor - Erratic, intermittent, or incorrect data

The controller is receiving an implausible, erratic, or intermittent signal regarding the transmission hydraulic pump/motor's operation or status.

• MAGNUM AFS Connect
• AFS Connect Magnum Tractors (Models 180, 200, 220, 240, 250, 280, 310, 340, 380)
• MAXXUM Series Tractors

1. 1

   Inspect the wiring harness and connections between the Transmission Hydraulic Pump/Motor sensors and the Driveline Electronic Control (DEC) module for loose connections, corrosion, or chafing.

2. 2

   Verify the DEC module software version, as updates (e.g., version 1.3.0.0 or 1.8.0.0) may be required to resolve driveline control logic issues.

3. 3

   Inspect the transmission hydraulic filters, bypass switches, and restriction switches for restrictions that could cause erratic pump operation.

1. 1

   Repair or replace wiring

   Repair or replace damaged wiring harnesses between the pump sensors and the DEC.

2. 2

   Update software

   Flash/update the DEC module with the latest OEM software.

3. 3

   Replace components

   Replace the transmission hydraulic pump sensor or the pump itself if internal mechanical failure is causing erratic data.