John Deere 000920.06 – CLC / ACR: Cab Alarm Excessive Current

The fault code indicates an issue with the cab's audible alarm system, specifically that the controller has detected excessive current in the alarm circuit. Depending on the machine model, this fault is logged by either the Right Armrest Controller (ACR) or the Main Control Module/Cab Load Center (BLC/CLC).

• 909MH
• 859M
• 6110M
• 6120M
• 6130M
• 6145M
• 6155M
• 6175M
• 6195M

1. 1

   Cycle the machine's power to see if the fault code clears on restart

2. 2

   Check for other active fault codes related to the controller (ACR or BLC/CLC) or the general electrical system

3. 3

   Temporarily remove any non-essential or aftermarket accessories to reduce electrical load and see if the fault persists

4. 4

   Visually inspect the wiring harness and connectors associated with the cab alarm and controller for chafing, corrosion, or loose connections. On some machines, the alarm is located within the cab, and its wiring may be accessible by removing cab panels.

5. 5

   Test the alarm unit itself by checking for continuity/resistance across the terminals or applying direct voltage to see if it sounds

1. 1

   Isolate the fault

   Using the diagnostic checks, determine if the excessive current issue lies with the alarm unit itself, a short in the wiring, or a faulty control module.

2. 2

   Repair wiring

   If damaged wiring is found during inspection, repair or replace the affected sections of the harness. Ensure all connections are clean and secure.

3. 3

   Replace alarm unit

   If the alarm unit fails continuity testing or is internally shorted, replace it with a new audible warning alarm.

4. 4

   Diagnose controller

   If the wiring and alarm are in good condition, the fault may lie within the controller (ACR or BLC). This typically requires specialized tools and software available to certified John Deere technicians.