The 543-00074 is an Engine Throttle Controller (also called a drive panel or ECU sub-board) used in Doosan Daewoo excavators. It manages engine
starting, stopping, and throttle response to optimize fuel efficiency and performance.
Key Specifications
. Part Numbers: 543-00074, 54300074, 2543-1036.
. Material: High-durability alloy designed for high-temperature resistance (up to 105°C).
. Weight: Approximately 3 kg.
. Function: Controls the throttle motor to adjust engine RPM based on operator input or load.
Common Vehicle Fitment
This controller is specifically programmed for several Doosan and Daewoo series:
. DH Series: DH150-7, DH215-7, DH220-5, DH220-7, DH225-7, DH300-7, DH370-7.
. Solar Series: S130LC-V, S155LC-V, S210W-V, S220LC-V, S225LC-V, S340LC-7.
. DX Series: DX210, DX225LC.
Installation & Troubleshooting
. Plug-and-Play: Most aftermarket units come pre-programmed for immediate use.
. Critical Warning: Electrical wires and connectors are prone to short-circuiting. Ensure all wiring is inspected and the battery is disconnected before installation to avoid damaging the new board.
. Symptoms of Failure: Inconsistent engine response, inability to start/stop the engine via the throttle dial, or overall loss of power.
