Controller Maintenance; Ecu Diagnostic Port - Kohler KG80 Maintenance Manual

APM402
The APM402 controller does not use a Real Time Clock (RTC) battery.
APM603
The APM603 controller uses a CR1220 internal battery to preserve the time, date, and generator set events. If battery power is
low, an alarm, "Replace Clock Battery," appears on the controller. The Real Time Clock (RTC) battery has an expected lifespan
of ten years when the controller is powered by an engine battery or two years when the controller is not powered by an engine
battery. Have an authorized Kohler service representative service the controller.
KG80-KG200 generator sets have a diagnostic port located on the junction box. Use the following for general informational
purposes only. Contact an authorized service distributor/dealer for service or diagnostic equipment.
Note:
For diagnostic and troubleshooting purposes, the ECM/ECU can be powered ON and OFF with the following methods:

The engine ECM/ECU is typically powered ON and OFF with SiteTech™. See the SiteTech™ Software Manual for
details.

With the APM402 controller, the operator can also power the ECM/ECU ON and OFF through the controller menus.
See the controller operation manual for details.

With the APM603 controller, the operator can also power the ECU ON and OFF through the controller menus. The
operator password is required. See the controller operation manual for details.

The engine ECM/ECU can also be powered ON by cranking the engine.
Figure 2 ECU Diagnostic Port, Typical
TP-7173 10/20
Section 2. Controller Maintenance
Section 3. ECU Diagnostic Port
Diagnostic port
ADV-9082
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