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Reelmaster 5010 SeriesPage 5 -- 4Electrical System
Troubleshooting
CAUTION
Remove all jewelry, especially rings and
watches, before doing any electrical trouble-
shooting or testing. Disconnect the battery
cables unless the test requires battery voltage.
For effective troubleshooting andrepairs, there mustbe
a good understanding of the electrical circuits and com-
ponents used on this machine (see Chapter 9 -- Electri-
cal Diagrams).
If the machine has any interlock switches by--passed,
they must be reconnected for proper troubleshooting
and safety.
NOTE: Use the Diagnostic Display (see Special Tools
in this chapter) to test Electronic Control Module inputs
and outputswhen troubleshootingan electrical problem
on your Reelmaster.
Diagnostic Light
Machines in the Reelmaster 5010 series are equipped
with a diagnostic light that indicates if the machine elec-
tricalsystemisfunctioningcorrectly.Thediagnosticlight
is located on the control panel (Fig. 7).
When the ignition switch is moved to the RUN position
and the ECM isfunctioning properly,the diagnostic light
willbe illuminatedfor approximately3 secondsandthen
will turn off. The light should remain off during normal
machine operation.
If the ECM detects an electrical system malfunction
(fault) duringmachine operation,the diagnostic lightwill
flashrapidly.Thelightwillstopflashingandwillautomat-
ically reset when the ignitionswitch is turned to the OFF
position. The fault, however, will be retained in ECM
memory and can be retrieved at a future time.
If the diagnostic light does not illuminate when the igni-
tion switch is turned to the RUN position, possible
causes are:
1. Loopback harness is not connected to the wire
harness.
2. The diagnostic light (or circuit wiring) is faulty.
3. ECM fuses are faulty.
4. The ECM is faulty.
Check electrical connections, ECM fuses and the diag-
nostic light to determine malfunction. Make sure loop-
back connector is secured to wire harness connector.
Retrieving Fault Codes
To retrievefaults fromECMmemory,perform thefollow-
ing switch sequence:
1. Operatorseat shouldbe UNOCCUPIED,traction
pedal in neutral and PTO switch in the OFF position.
2. Make sure that both mow/backlap levers are in
MOW.
1. Control panel 2. Diagnostic light
Figure 7
1
2
3. Place mow/transport lever in TRANSPORT.
4. Move and hold joystick in the RAISE position.
5. Turn ignition switch to RUN.
6. Monitor the diagnostic light for fault code(s).
NOTE: Once the diagnostic light begins to display fault
codes, the joystick can be released.
A fault code will be displayed by the diagnostic light as
two groups of up to 5 flashes with approximately 1 sec-
ond between the two groups. If multiple faults have oc-
curred,thethreemostrecentfaults willbedisplayedwith
the oldest of those faults being shown last. Fault codes
formultiplefaultswillbedisplayedwitha2to3second
pause in light flashes between fault codes. After the
three fault codes have been displayed, there will be a 4
to 5 second pause and the fault codes will be repeated.
If no faults are retained in ECM memory, the diagnostic
light will flash continuously after following the above
switch sequence. Fault codes are shown on the follow-
ing page.