Case IH 520623-02 - ACM – ACM: Transmission range decrease switch circuit fault

Indicates a circuit fault (such as an erratic, incorrect, or missing signal) related to the transmission downshift or range decrease switch located on the multifunction handle.

• MAGNUM AFS Connect
• Steiger AFS Connect
• Quadtrac AFS Connect
• Optum AFS Connect

1. 1

   Inspect the wiring harness connecting the multifunction handle (joystick) to the Armrest Control Module (ACM) for pinches, chafing, or loose connections.

2. 2

   Check the physical transmission range switch on the joystick for sticking, physical damage, or debris preventing normal operation.

1. 1

   Replace switch or handle

   Replace the switch assembly or the entire multifunction handle if the switch has failed internally and cannot be cleaned or re-pinned.

2. 2

   Clear fault codes

   Clear the fault codes via the AFS Pro 1200 display.