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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, the traction
pedal should be in neutral, the mow/transport slide
should be placed in the transport position and the ma-
chine should not be in backlap position.
2. Move and hold joystick in the RAISE position.
3. Turn ignition switch to the RUN position.
4. Monitor the diagnostic light for fault code(s).
NOTE: Once the diagnostic light begins to display fault
codes, the joystick can be released.
Fault Code (Lamp Flashes)
1 -- 3
1 -- 5
1 -- 6
1 -- 7
1 -- 8
1 -- 9
2 -- 1
2 -- 2
2 -- 3
2 -- 4
2 -- 5
2 -- 6
3 -- 1
3 -- 3
3 -- 5
4 -- 1
5 -- 1
5 -- 3
5 -- 5
5 -- 7
6 -- 2
6 -- 3
Electrical System
Circuit current to high temperature warning light is excessive
High engine temp warning occurred (PTO was shutdown by controller)
High engine temp shutdown occurred (engine was shutdown by controller)
Low engine oil pressure occurred
Excessive charging voltage was detected by controller (check charging system)
Low charging voltage was detected by controller (check charging system)
Main power relay fault occurred (check main power relay)
Circuit current to start relay is excessive (check start relay circuit)
Circuit current to engine run solenoid is excessive (check solenoid circuit)
Circuit current to glow plug relay is excessive (check glow plug circuit)
Circuit current to energize the PRV solenoid (mow) is excessive
Circuit current to energize the lift/lower S1 solenoid is excessive
Circuit current to energize the lift/lower S2 solenoid is excessive
Circuit current to energize the lift/lower S3 solenoid is excessive
Circuit current to energize the lift/lower S4 solenoid is excessive
The engine temperature sensor is shorted to ground
The engine temperature sensor is open
Page 5 - - 8
Fault codes displayed by the diagnostic light are two dig-
it numbers with no digit higher than five (5). Fault codes
are listed in the chart below. There will be a one (1) sec-
ond pause between the first and second digit of a code.
Up to three (3) fault codes retained in controller memory
will be displayed by the diagnostic light in order from the
most recent fault to the oldest fault. If there are multiple
faults in controller memory, there will be a three (3) sec-
ond pause between codes. The fault codes will continu-
ally repeat after a five (5) second pause until the ignition
key is turned off.
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 switch se-
quence.
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.
Fault Description
Controller master board is faulty
Engine alternator fault occurred
Upper fuse 2 (7.5 amp) is faulty
Upper fuse 3 (7.5 amp) is faulty
Upper fuse 4 (7.5 amp) is faulty
Reelmaster 3550--D
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