TP-6953 7/19160 Section 9 Component Testing and Adjustment
9.8 Powering Up the ECU without
Cranking the Engine
If connecting to Kohler’s Diagnostic Tool for
troubleshooting in the field or reprogramming the engine
ECU, follow this procedure for 28- 40 kW marine units
equipped with a Decision-Makerr 3500 controller:
1. Connect a USB cable from a Laptop (equipped with
SiteTecht) to the Decision-Makerr 3500
controller. See Figure 9-11 for the USB connection
at the Decision-Makerr 3500 controller.
2. Connect the Kohler Diagnostic Tool from a Laptop
to the ECU Diagnostic port on the generator. See
Figure 9-11 for the port location.
1
1. ECU diagnostic port (port included in harness loc ated inside
junction box, behind controller)
2. USB connector
2
Figure 9 -11 ECU Diagnostic Port and USB
Connector Locations
3. Open SiteTecht after connection to the
Decision-Makerr 3500 controller is established.
Under the GENSET SYSTEM CONFIGURATION
parameter, change ECM Powered Mode from
“OFF” to “ON”. See Figure 9-12
Figure 9-12 Genset System Configuration Parameter
(in SiteTecht)
4. When opening the Kohler Diagnostic Tool Program
on the laptop, it should now power the LEDs on the
EDL and attempt to establish connection with the
ECU.
Note: If the RUN button is pressed or the controller is
powered down, the parameter will change back
to “OFF” automatically.
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