Toro Greensmaster TriFlex 3320/3420 Service Manual page 171

Retrieving Fault Codes
All machine fault codes are retained in the TEC control-
ler memory. The three (3) most recent fault codes that
have occurred within the last forty (40) hours of opera-
tion can be retrieved using the diagnostic light. To re-
trieve these fault codes from the controller memory,
perform the following switch sequence:
1. Operator seat should be UNOCCUPIED.
2. Place functional control lever in the TRANSPORT
position.
3. Make sure that backlap switch is in the MOW posi-
tion.
4. Move and hold joystick in the RAISE position.
5. Turn ignition switch to the RUN position.
6. Monitor the diagnostic light for fault code(s).
NOTE: Once the diagnostic light begins to display fault
codes, the joystick can be released.
Fault codes displayed by the diagnostic light consist of
two (2) numbers. The first number is from one (1) to
twelve (12) and the second number is from one (1) to
nine (9). There will be a one (1) second pause between
the first and second number of a code. Up to three (3)
fault codes retained in controller memory will be dis-
played by the diagnostic light in order from the most re-
cent fault to the oldest fault. If there are multiple faults in
controller memory, there will be a three (3) second
pause between codes. The fault codes will continually
repeat after a five (5) second pause until the ignition key
is turned off. See Fault Codes in this section to identify
faults that have occurred with a machine.
If there are no faults that have occurred within the last
forty (40) hours of operation, the diagnostic light will
flash continuously after performing the above fault re-
trieval switch sequence.
If a fault code is not retrieved from the controller memory
within forty (40) hours of machine operating time, the
fault cannot be retrieved from controller memory using
this procedure. If necessary, contact your Toro distribu-
tor to retrieve older fault codes.
Greensmaster 3320/3420
Clearing Fault Codes
After the three (3) most recent fault codes have been re-
trieved, clearing of those faults can be completed using
the following switch sequence:
1. Place machine switches in fault retrieval mode (see
above). The diagnostic light should be displaying the
fault codes.
2. Operator seat should remain UNOCCUPIED.
3. Move backlap switch to the BACKLAP position.
4. Move joystick to the RAISE position.
5. Monitor the diagnostic light for continuous flashing
indicating that faults have been cleared from the control-
ler memory.
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