Caution: This document contains mixed page sizes ... - Cummins Onan

11. Control
WARNING Accidental or remote starting can
cause severe personal injury or death. Before
removing a housing panel or access door, disconnect
the negative (−) cable at the battery to
prevent the engine from starting.
CONTROL BOARD (CONTROLLER)
The Control Board is an integrated microprocessorbased
engine and generator control that provides all
the control, monitoring and diagnostic functions required
to operate the genset.
Control Board
Location and Mounting: Refer to Figure 11-1 for
control board location and mounting and to
Pages A-1 and A-2 for the control wiring schematic
and harness drawings. The control board is accessible
for replacement through the front access door.
Connector: A single connector (P1/J1) is used for
all connections between the control board and harness.
When separating the connector, use a small
flat-bladed screwdriver to lever out the catch.
CAUTION Makeshift meter test probes used
for testing Control Board connections during
troubleshooting can damage pin sockets by
spreading or dislodging the contact wiper arms,
resulting in an open or intermittent electrical
connection. Use a mating pin (PN 323−1605) or a
test probe that is 0.045 inches in diameter. Replace
damaged pin sockets (PN 323−1614−01).
Make sure the pin sockets are fully seated and
can’t be pulled out.
CONNECTOR
J1
CONTROL
BOARD
GENERATOR
INTAKE COVER
FIGURE. 11-1 CONTROL BOARD
11-1