Kohler 38RCLB

TP-6907 5/1666 Section 5 Troubleshooting
Fault Message CheckDescription/ CommentsAction
ECM Batt Lo Warning Warning The ECM reported low voltage for the
engine battery.
Check the engine cranking
circuit.
Check the battery and the
battery charger.
ECM Comm Err Shutdwn Shutdown The controller shut down the generator
because communication with the ECM
was lost for 4 or more seconds.
Check CAN communication
wiring between controller and
ECM.
ECM Diag Warning Warning The ECM reported a fault other than
those specifically referenced in this
chart.
Connect to the ECM
diagnostic plug on the
connection box to determine
the specific J1939 fault code.
Follow the troubleshooting
steps in the fuel system
diagnostic service manual,
TP-6903.
ECM MAP SensorHi Warning Warning The ECM reported a high voltage error
for the Engine Air Temperature/Manifold
Absolute Pressure Sensor (TMAP) or
MAP sensor.
Check the power supply.
Check the TMAP Sensor for
shorted leads.
Check the MAP sensor for
shorted leads.
(30RCL/38RCLB)
Check for vacuum leaks.
ECM MAP SensorLo Warning Warning The ECM reported a low voltage error
for the Engine Air Temperature/Manifold
Absolute Pressure Sensor (TMAP) or
MAP sensor.
Check the power supply.
Check the TMAP Sensor for
shorted leads.
Check the MAP sensor for
shorted leads.
(30RCL/38RCLB)
Check for vacuum leaks.
ECM Mismatch Shutdwn Shutdown The controller shut down the generator
because the ECM does not match any
of the supported models.
Verify controller configuration
using SiteTech. Consult local
service technician.
ECM O2 Open Circ Warning Warning The ECM reported an open circuit error
for the Heated Exhaust Gas Oxygen
Sensor (HEGO).
Check the wiring to the HEGO
sensor.
ECM O2SenseInpHi Warning Warning The ECM reported a high voltage error
for Heated Exhaust Gas Oxygen
Sensor (HEGO).
Check the wiring to the HEGO
sensor.
Check that the ignition wires
are fully seated.
Check the ignition system,
HEGO sensor, and fuel
control valve for shorted
leads.
Check that vacuum hoses are
properly connected.
Check that the fuel regulator
is set for the correct fuel type
(NG or LPG).
Check that the wiring is
properly connected for the
type of fuel set by the fuel
regulator (NG or LPG).
* Programmable Interface Module (PIM) required
[ Applies during exercise runs and normal operation.