Engine Wiring Diagram for John Deere Electronic Control Unit (ECU) - 12V or 24V

RG18057-UN-09FEB10

Engine Start Components

C16 - Battery

C06 - Alternator Excitation

G1 - Alternator 12 Volt

C17 - Single Point Ground

M1 - Start Motor 12 Volt

C14 - Starter Relay 12 Volt

C13 - Starter Relay 24 Volt

F03 - 15 Amp Fuse

F02 - 20 Amp Fuse

F01 - 30 Amp Fuse

C15 - Remote On/Off

C12 - TVP

RG18056-UN-10FEB10

Focus Level 15 ECU (Left Side of Diagram)

C19 - Fuel Filter Control/Diagnostic/Power/Ground

D01 - Water in Fuel Sensor

T04 - Coolant Temperature Sensor

T05 - Fuel Temperature Sensor

P03 - Fuel Pressure Sensor (high)

P07 - Fuel Pressure Sensor (low)

P01 - Manifold Air Pressure Sensor

P04 - Oil Pressure Sensor

J3 - 32 Position - Blue

J2 - 48 Position - Brown

J1 - 32 Position - Black

C08 - Auxiliary Connector

5042 - Unswitched Power

5050 - Ground

5457 - Transfer Pump Speed Command

5458 - Transfer Pump Motor Current

5434 - Transfer Pump Status Input (+5 volt)

5426 - Driver 9

5414 - Excitation Return #2

5461 - Analog 8

5428 - Analog 2

5469 - Analog 5

5415 - Analog 6

5468 - Analog 3

5467 - Analog 4

5416 - Excitation Voltage #2

5911 - Sensor Excitation (+5 volt)

5012 - Switched Power

5714 - Sensor Return

5971 - Cruise Cancel/Resume

5954 - Cruise On

5913 - Secondary Analog Throttle

5012 - Stop Lamp Power

5012 - Cruise Common

5939 - External Derate

5941 - External Shutdown

5917 - Remote Cruise

5948 - Customer Loss of Coolant

5436 - Air Filter Restriction Switch

5943 - Cruise Brake

5937 - Isochronous Governor

5714 - External Derate / Shutdown Common

5981 - PWM Throttle

5473 - Stop Lamp

5050 - Single Point Ground

RG18055-UN-09FEB10

Focus Level 15 ECU (Right Side of Diagram)

X01 - Engine Crankshaft Sensor

X02 - Engine Camshaft Sensor

T02 - Manifold Air Temperature Sensor

C01 - Fuel Injector Harness

J3 - 32 Position - Blue

J2 - 48 Position - Brown

J1 - 32 Position - Black

C10 - CAN Terminator

C09 - Control Panel Connector

C11 - Diagnostic Connector

5448 - Return

5443 - Return

5456 - Analog 14 Delta 15 Absolute

5474 - Excitation Return Delta Temperature

5493 - Cylinder 1

5494 - Cylinder 2

5495 - Cylinder 3

5497 - Cylinder 4

5498 - Cylinder 5

5499 - Cylinder 6

5475 - Wait to Start

5034 - Fused Switched Power

5814 - Sensor Return

5422 - Start

5050 - Ground

5020 - Can Shield

5012 - Ignition

5916 - Warning Lamp

5412 - Accelerator

5439 - Tachometer

5915 - Analog Throttle

5616 - Excitation Voltage (+5 volt)

5918 - Override Shutdown

5714 - Override Shutdown Return

5947 - Throttle Switch

5714 - Sensor Return

5936 - Resume Coast / Bump Down

5905 - CAN Low

5904 - CAN High

5955 - Set Accelerator / Bump Up

5923 - Bump Enable