Case IH 2763 (3042.19) - DEC – UCM: Open circuit on Reverse solenoid (HSD)

The control module has detected an open circuit on the High Side Driver (HSD) line supplying the reverse directional solenoid.

• MAXXUM T4E
• Case 21F
• Case 121F
• Case 221F
• Case 321F
• Case W50C
• Case W60C
• Case W70C
• Case W80C

1. 1

   Check the connection at X-03A-22 of the UCM

2. 2

   Check the connection at the harness junction X-200-E12/B10

3. 3

   Check the connection at X-086-1-2 of solenoid Y-002 (the reverse valve)

4. 4

   Check the wiring continuity between X-022B-3 and X-02B-13

5. 5

   Check the wiring continuity between X-022B-6 and X-04A-22

1. 1

   Inspect Wiring

   Perform the diagnostic continuity checks listed above using a multimeter. Look for broken wires, corroded pins, or disconnected harness plugs at the specified X-connectors.

2. 2

   Repair Harness/Solenoid

   If an open circuit is found in the wiring or the Y-002 solenoid coil is internally open, repair the wire or replace the reverse solenoid valve.

3. 3

   Module Replacement

   If all wiring and solenoid connections are intact and the fault is still present, replace the UCM.