Engine Fault Codes - Ford Models - Genie GS-3384 Service Manual

January 2013
5-6
Engine Fault Codes -
Ford Models
How to Retrieve Engine Fault
Codes
The ECM constantly monitors the engine by the
use of sensors on the engine. The ECM also uses
signals from the sensors to initiate sequential fuel
injection and make constant and instantaneous
changes to ignition timing, fuel delivery and throttle
position to maintain the engine's running condition
at its highest efficiency while at the same time
keeping exhaust emissions to a minimum. When a
sensor fails or returns signals that are outside of
set parameters, the ECM will store a fault code in
memory that relates to the appropriate sensor and
will turn on the Check Engine Light.
Refer to Section 5, Fault Codes. Use the Ford
Engine ECM Fault Code Chart within Section 5 to
aid in identifying the fault.
1 Open the ground controls side cover.
2 Pull out the red Emergency Stop button to the
on position at both the ground and platform
controls. Turn the key switch to ground
controls.
3 Quickly activate and release the start toggle
switch/button. Do not start the engine.
Part No. 84793
4 Move and hold the run/test toggle switch to the
test position.
Result: The check engine light should turn on.
The check engine light should begin to blink.
5 Continue to hold the run/test toggle switch in the
test position. Count the blinks and note the
results. Refer to Section 5, Fault Codes, for
definition of engine fault codes.
Note: Fault codes are two or three digits. The
check engine light will blink the first digit of a two
digit code then will pause for 1.2 seconds and then
blink the second digit. For example: the check
engine light blinks 5 consecutive times, pauses for
1.2 seconds and then blinks 1 time. That would
indicate code 51. The ECM is able to store up to
six individual fault codes. There will be a 2.4
second pause between codes.
Note: Once a fault code has been retrieved and the
repair has been completed, the ECM memory must
be reset to clear the fault code from the ECM. See
5-6, How to Clear Engine Fault Codes from the
ECM.
GS-84 • GS-90
Section 4 • Repair Procedures
GROUND CONTROLS
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