Genie S-40 Service Manual page 165

Section 5 • Fault Codes
FAULT CODES
Ford DSG-423 EFI Engine
How to Retrieve Ford 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.
Note: Perform this procedure with the key switch
in the off position.
1 Open the ground controls side cover and
locate the run/test toggle switch on the side of
the ground control box.
2 Pull out the red Emergency Stop button to the
on position at both the ground and platform
controls.
3 Quickly activate and release the start toggle
switch/button. Do not start the engine.
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 and count the blinks.
Note: Before the fault codes are displayed, the
check engine light will blink a code 123 three
times. After the fault codes, the check engine
light will blink a code 123 three times again
indicating the end of the stored codes.
5 - 12
Note: If any fault codes are present, the ECM will
blink a three digit code three times for each code
stored in memory. It will blink the first digit of a
three digit code, pause, blink the second digit,
pause, and then blink the third digit. For example:
the check engine light blinks 5 consecutive
times, blinks 3 times and then 1 time. That would
indicate code 531.
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 How to Clear Engine Fault Codes from
the ECM.
How to Clear Engine Fault
Codes from the ECM
Note: Perform this procedure with the engine off
and the key switch in the off position.
1 Open the engine side turntable cover and
locate the battery.
2 Disconnect the negative battery cable from
the battery for a minimum of 5 minutes.
3 Connect the negative battery cable to the
battery.
S-40 • S-45
October 2013
Electrocution/burn hazard.
Contact with electrically charged
circuits could result in death or
serious injury. Remove all rings,
watches and other jewelry.
Part No. 102521