Case IH 518423-00 - ACM – ACM: Hand throttle 2 internal failure

This code indicates an internal failure, signal mismatch, or out-of-range error within the secondary hand throttle potentiometer/switch circuit located on the multi-function handle/armrest.

• MAGNUM AFS Connect
• Case IH Magnum AFS Connect Series
• Case IH Puma Series

1. 1

   Connect the Case IH Electronic Service Tool (EST), navigate to the ACM Advanced Configuration, and monitor parameter '(Config B/b 1.1) Hand throttle #2 position' to see if the controller is reading any physical movement of the throttle.

2. 2

   Verify the 5-volt reference voltage to the armrest components. Check for related codes indicating if the 5-volt reference is above or below limits (e.g., codes 1015/1016).

3. 3

   Inspect the wiring harness connecting the multi-function handle to the ACM for pinched wires, loose connectors, or bent pins.

1. 1

   Disassemble

   Disassemble the multi-function armrest console.

2. 2

   Replace

   Replace the faulty electronic hand throttle lever/potentiometer assembly.

3. 3

   Recalibrate

   Recalibrate the armrest controls via the EST.