Fault Codes - Genie Z-45/25 Service Manual

First Edition • Second Printing
Fault
Code
11
Throttle Position (TP)
12
sensor low voltage.
Manifold Absolute
14 Pressure (MAP) sensor
low voltage.
Engine speed exceeded
21
4000 RPM.
Throttle Position (TP)
22
sensor high voltage.
Manifold Absolute
24 Pressure (MAP) sensor
high voltage.
31 Fuel pump low voltage.
Heated Oxygen (HO
32
sensor low voltage.
Engine Coolant
33 Temperature (ECT)
sensor high voltage.
Part No. 52709
Problem
--
Faulty TP sensor OR sensor
wires shorted shorted to ground
or poor terminal connection.
Faulty MAP sensor OR sensor
wires shorted to ground or poor
terminal connection.
Obstruction in throttle body OR
faulty ECM.
The ECM senses a signal from
the TP sensor that is greater
than 4.9V DC OR the TP
sensor wiring is shorted to
ground OR there is a poor
terminal connection OR the TP
sensor is bad.
Faulty MAP sensor OR sensor
wires shorted to ground or poor
terminal connection.
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
2
) the HO
shorted to ground OR there is a
poor terminal connection OR
the HO
Engine is overheating OR
sensor wires shorted to ground
or poor terminal connections
OR ECT sensor is bad
Genie Z-45/25 & Genie Z-45/25J
Section 5 • Troubleshooting Flow Charts
Cause
--
2
sensor wiring is
2 sensor is bad.

Fault Codes

Solution
Normal operation.
Check for poor terminal
connections or shorted wires
from the TP sensor to the ECM
OR replace the TP sensor.
Check for poor terminal
connections OR wires shorted to
ground OR replace MAP sensor.
Check for obstructions in the
throttle body that could cause
binding of the throttle assembly
OR replace ECM.
Check for poor terminal
connections or shorted wires
from the TP sensor to the ECM
OR replace the TP sensor.
Check for poor terminal
connections or shorted wires
from the MAP sensor to the
ECM to ground OR replace MAP
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 fuel pump.
Check for water in the fuel,
misfiring cylinder or pugged fuel
filter OR check for poor terminal
connections or shorted wires
2
from the HO sensor to the ECM
to ground OR replace HO
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.
2
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