Book 22772784 (9/08/06)
62
Circuit Description:
The CANH, CANL and SHLD wires are a cable that is located in the main harness. CANH refers
to CAN HI and CANL refers to CAN LO and SHLD is the shield of the CAN cable. This is the
cable that carries the communications between the engine and WEDGE controller and any other
devices that are connected to the CAN cable. This cable is also referred to as the CAN Network
since it may have multiple devices connected to it.
The CAN network has two terminating resistors, one located near the engine controller and one
near the WEDGE controller. The value of each of these resistors is 120 ohms. They are
connected in parallel, as shown below, across the network. The resistors are mounted in a
special Deutsch connector. One connector is tagged R4 and the other is tagged R5.
CUMMINS
ENGINE
CONTROLLER
WEDGE
CONTROLLER
R4
R5
CANH
CANL
Component Location:
The Cummins engine controller is located on the left side of the engine. Connector J2 is located
on the left side of the controller and is the OEM connector. The machine harness (P2) plugs into
the J2 connector.
The WEDGE controller is mounted to the machine control panel on the back side. Resistor R5 is
stubbed out of the harness near the engine controller and resistor R4 is stubbed out of the
harness near the WEDGE controller.
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Страница 118: ...Revision History Rev EC Number Comments A SVC31234 Original release B CN026881 Doosan reference updates...