Diesel Engine ECU Wiring Diagram | Gallery posted by 🇹🇭🇰🇷🇬🇪🇨🇦🇯🇵🇳🇪🇼🇸

Diesel Engine ECU Wiring Diagram for Common Rail Diesel Engine, which shows the connection between the ECU box (center) and the sensors, fuel supplies and control equipment in the system.

The diagram distinguishes the type of wire by color (see the symbol at the bottom right) as follows:

• Red (Power): Raising Power Cord (Positive Current)

• Black (Ground): Ground or ground wire

• Blue (Signal): Data / Command Signal Line

• Yellow (Map): System-specific signal line / reference line

1. Main power supply system and starting assist (upper part of the image)

• Main Line 30 and 15: * Line 30 (Top Red Line): is the direct light from the battery (constantly lit) through a 30A fuse into the main relay set.

• Line 15 (Yellow Line): This is the light that runs through the Ignition switch when the key starts.

• Fuel Pump relay board & pompa: Fuel pump control relay set, serves to edit current to fuel pump in tank

• Glow plug control module & Glow plugs: The burner and burner control box (4 heads) serves to warm the combustion chamber before starting the engine while cold, receiving the main control signal from the ECU box.

2. Fuel system and fuel system

• Fuel Pressure Regulator / High pressure fuel pump: A fuel pressure regulator mounted to a high pressure pump, fires the ECU direct-in power cord to control the oil pressure in the common rail proper according to the engine cycle.

• 1, 2, 3, 4 Injectors: All 4 Electric Injectors receive a Blue Signal independent separation from each pin ECU box for rhythmic fuel injection accuracy.

3.Pressure, Temperature and Air Sensor (Sensors)

• Mass Air Flow Sensor (MAF): Sensor measures the air mass flowing into the engine. Transmit data so that the ECU calculates the amount of oil injection to balance the air.

• Fuel pressure sensor: Oil pressure sensor in common rail rail

• MAP sensor (Manifold Absolute Pressure): Sensor measures the air pressure in the intake manifold (to see the boost pressure of the turbo)

• Ntc gasolio & Ntc acqua: Temperature Sensor Using NTC Resistance

• NTC gasolio: Diesel fuel temperature measure

• NTC acqua: Measure engine coolant temperature (signal to 90 ° C / 60 ° C / 30 ° C heat display dial with)

4. Exhaust control, switch and power transmission

• EGR & Turbo: Exhaust Circulation Valve (EGR) and Turbo Control Unit (Turbo) receive square wave (PWM) signals from the ECU box to turn the valve on-off and control the boost pressure.

• Clutch switch: Clutch leg switch, transmit signal to ECU box when clutch pedal (used for momentary power cutting or Cruise Control system)

• Velocita (Speed Sensor): Vehicle Speed Sensor

• Injection timing sensor & RPM / pms: * Oil injection degree sensor and engine cycle sensor / top dead position (Crankshaft / Camshaft Position Sensor) is the key to telling the ECU how much the engine is rotating and which piston is moving up to command the ignition (oil injection).

5. Other auxiliary controls

• Power increase module: The power increase tow box (or rail push box / composer box) in the tree shows that there is an extension between the pressure sensor signal and the ECU.

• Spina diagnosi: Plug for OBD2 (Diagnostic port) scanner to read error code (Check Engine) or check engine data list

• Ventole ac: Radiator cooling fan and air panel, which control operation through ECU box, based on engine temperature and state of air conditioning system.

Pin summary (Pinout): Numbers in the middle of the box (e.g. 87, 80, 82, 55...) is the pin number of each ECU plug, which indicates which wires from which device to plug in.