Case IH 51133 – AUX Controller: Invalid Software Instruction Executed

Indicates an internal logic or software execution error within the module.

• MX Magnum
• Case IH MX Magnum Series
• Case IH Steiger Series

1. 1

   Inspect all connector ends for damage, bent, or dislocated pins

2. 2

   Inspect and test the wiring harness between connectors C340 and C054

3. 3

   Verify that the remote hydraulic controller has proper power and ground connections

4. 4

   Connect all connections and turn the 1st remote valve on, then test connector C054 (should read approximately 12 volts at pin 6 and low voltage at pin 7)

1. 1

   Repair harness

   If the wiring harness between C340 and C054 is damaged, repair the harness and retest the system.

2. 2

   Verify controller failure

   If the harness, power, and ground connections are all verified to be in good working order, but the controller fails the voltage test at connector C054 (does not output 12V at pin 6 and low voltage at pin 7 when the 1st remote valve is activated), the controller has failed internally.

3. 3

   Replace controller

   Replace the remote hydraulic controller.