Case IH 626-04 - VCM – VCM: Vehicle controller drive enable voltage low
Issue description
The specific combination of 626-04 and 'Vehicle controller drive enable voltage low' does not appear in published Case IH fault databases. FMI 04 indicates a 'Voltage Below Normal' or 'Short to Ground' condition, meaning the controller is seeing a voltage drop below the required threshold on the drive enable circuit, preventing the machine from moving.
Applies to these machines
4 machines- MAGNUM AFS Connect
- Magnum
- Steiger
- Patriot
Check the cause
Check the VCM power supply and ground connections.
Inspect the wiring harness between the VCM and the drive enable switch/relay for a short to ground.
Test the drive enable switch or interlock (e.g., park brake switch, seat switch, or neutral safety switch) to ensure it is sending the correct voltage back to the VCM.
Parts you might need
(3)Vehicle Control Module (VCM)
Part number varies heavily by specific machine serial number
Drive Enable Switch / Safety Interlock Switch
Drive Enable Relay
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