482-7738 ECG Controller (ECG Electronic Governor), Part Number: 550-9110, Cal File Loaded: 479-5884. This is an engine speed control unit (ECG controller, often called ECU) for Perkins 400 series diesel engines such as 404D-22 /404F-22, widely used on Caterpillar asphalt pavers, compactors and small road construction equipment. It manages engine RPM, throttle actuator, speed feedback and CAN bus communication.

Specifications

• Part Number: 482-7738
• ECG Part No: 550-9110 (5509110)
• Calibration File: 479-5884
• Type: ECG Electronic Governor / Engine Speed Controller
• Connectors: J1(Grey), J2(Black)
• Operating Voltage: 12V
• Serial No format: 550-9110Cxxxxxxx
• Application: Perkins 404D-22, 404F-22 Engine / CAT Small Road Machinery

Pin Definition (Printed on Unit Label)

J1 (Grey Connector)1:TXD | 2:GND2 |3:RPM- |4:GND |5:ACT+ |6:CANL 7:CANH |8:ACT- |9:VBAT |10:RPM+ |11:VBB2 |12:12VC

J2 (Black Connector)1:MAP |2:SRTN |3:AUX2 |4:AUX |5:IVS |6:PTO 7:SW1 |8:SW2 |9:EPSW |10:VMAP |11:VREF |12:APP

Package Content

1 × 482-7738 ECG Controller (As shown in picture)

Important Notes

✅ Pre-programmed with Cal File 479-5884. Ready for installation after correct wiring. ⚠️ Please verify your original part number, calibration file and machine model before ordering. ⚠️ This is an ECG speed governor module, NOT main engine fuel ECM. ⚠️ Professional installation & wiring required. If you are unsure, consult a professional mechanic. ⚠️ Compatibility check is buyer’s responsibility.