Genie S-60 Service Manual page 110

Section 5 • Troubleshooting Flow Charts
FAULT CODE CHART
Fault Code Problem
Fuel pump
31
low voltage.
Heated
Oxygen (HO2)
32
sensor low
voltage.
Engine
Coolant
33 Temperature
(ECT) sensor
high voltage.
Intake Air
Temerature
35
(IAT) sensor
high voltage.
Fuel pump
41
high voltage.
5 - 4
Cause
Voltage to fuel pump is
greater than or equal to
2V DC below ignition
voltage.
Water in the fuel,
misfiring cylinder,
plugged fuel filter OR
the HO2 sensor wiring
is shorted to ground OR
there is a poor terminal
connection OR the HO2
sensor is faulty.
Engine is overheating
OR sensor wires
shorted to ground or
poor terminal
connections OR ECT
sensor is faulty.
Engine is overheating
OR sensor wires
shorted to ground or
poor terminal
connections OR ECT
sensor is faulty.
Fuel pump is receiving
voltage when the ECM
is not sending the
signal to the fuel pump
to turn ON.
Genie S-60 & Genie S-65
Third Edition • First Printing
Solution
Test the fuel pump relay, see the Repair
Section OR check for poor terminal
connection from the fuel pump relay to fuel
pump OR replace the fuel pump.
Check for water in the fuel, misfiring
cylinder or plugged fuel filter OR check for
poor terminal connections or shorted wires
from the HO2 sensor to the ECM to ground
OR replace HO2 sensor.
Check engine coolant level OR check for
shorted wires or poor terminal connections
from the ECT sensor to the ECM OR
replace the ECT sensor.
Check for poor terminal connections or
shorted wires from the IAT sensor to the
ECM to ground OR replace IAT sensor.
Test the fuel pump relay, see the Repair
Section OR check for poor terminal
connection from the fuel pump relay to fuel
pump OR replace the ECM.
Part No. 65196