Genie GS-3384 Service Manual page 182

Section 5 • Fault Codes
Ford Engine ECM Fault Code Chart
(before serial number GS8404-40302)
Code Problem
11
- - -
Throttle Position (TP) sensor
12
low voltage
Manifold Absolute Pressure
14
(MAP) sensor low voltage.
Engine speed exceeded
21
4000 RPM.
Throttle Position (TP) sensor
22
high voltage.
Manifold Absolute Pressure
24
(MAP) sensor high voltage.
31
Fuel pump low voltage.
Heated Oxygen (HO2)
32
sensor low voltage.
Engine Coolant Temperature
33
(ECT) sensor high voltage.
Intake Air Temperature (IAT)
35
sensor high voltage.
41
Fuel pump high voltage.
Heated Oxygen (HO2)
42
sensor high voltage.
5 - 8
Cause
- - -
Faulty TP sensor OR sensor wires 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 the HO2 sensor wiring is
shorted to ground OR there is a poor terminal
connection OR the HO2 sensor is bad.
Engine is overheating OR sensor wires
shorted to ground or poor terminal
connections OR ECT sensor is bad.
IAT sensor signal is greater than or equal to
4.93V DC for at least 3 seconds.
Fuel pump is receiving voltage when the
ECM is not sending the signal to the fuel
pump to turn ON.
A leaking or malfunctioning fuel injector,
misfiring cylinder, faulty TP sensor or
contamination from fuel OR use of improper
thread sealant on sensor threads OR sensor
wires shorted to ground or poor terminal
connections OR HO2 sensor is bad.
GS-3384
September 2005
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 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
connections from the fuel pump relay to
fuel pump OR replace the ECM.
Test for a leaking or malfunctioning fuel
injector, misfiring cylinder or bad TP
sensor. Remove HO2 sensor and check
condition of sensor for contamination OR
check for poor terminal connections or
shorted wires from the HO2 sensor to the
ECM to ground OR replace HO2 sensor.
Part No. 82259
REV A