JCB EcoMAX Engine Installation Manual
Page 36 of 64 320/A9164-1 © JCB Power Systems Ltd.
13. Electrical Control & System Integration
13.1 Introduction
A Delphi DCM Common Rail Engine Control Unit (ECU) has been installed onto the JCB
EcoMAX engine to manage the combustion process in line with the requirements of Stage 4
/ Tier 4 emissions regulations.
The ECU has two connectors:
Engine Connector
Machine Connector
The engine is supplied with all appropriate engine sensors installed and connected to the
Engine Connector through an engine wiring harness. The Machine Connector provides the
interface to the equipment electrical system.
N NOTE: For engine maintenance and diagnostic purposes, the OEM must ensure
that an SAE J1939-13 diagnostic connector is installed in the equipment’s wiring
harness. This diagnostic connector must be located in a suitably protected location,
such as inside the cab, and have a removable, sealed protective cover. The
diagnostic connector interfaces with the ECU through the CAN Bus wiring through
the Machine Connector. Please contact JCB Power Systems Applications
department for more information and advice.
13.2 IPU Harness / Electrical Integration
As part of the Industrial Power Unit design and scope of supply electrical harnesses have
been designed and included. The IPU has a machine side harness which integrates all the
engine machine side connections and aftertreatment sensor connections fitted to the engine.
A customer connection (29 way Deutsch Connector) is included.
The Tank module has a separate harness which integrates the DCU, Coolant valve, head
unit and Supply module and connects to the on engine harness through a length of cable
which allows for installation flexibility.
The customer side harness must include connection to the 29 way machine connector, Fuel
pump power, Water in Fuel Sensor, Power Hold Relay Box connection, Diagnostic Socket
connection, 250 Kbps bus termination resistor and customer control panel connection.
Please see the Schematic requirement. Harness breakout lengths should be designed to suit
individual installation component positions.
The schematic for the customer harness is detailed in the schematic part number 320/A9656
With the exception of the control panel connection which is customer/control panel specific
all the mating connectors for the machine side harness are included within the connector kit
which can be included as part of the unit scope of supply – please check the exact product
specification for details of optional connector kit
Should a grid Heater be required the installer must provide supplementary wiring and relays
to power this – further advice is available from the JCB Applications Department
13.3 General Information
Detailed manual 320/A9167 is available to assist with the System’s Integration of the DCM
3.3 and Manual 320/A9059 to detail the integration with Bosch aftertreatment DCU.
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