Fault 51: Alternator Failure - Toro Greensmaster TriFlex 3300 Manual

Fault 51: Alternator Failure

InfoCenter Display:
Fault Description
The TEC compares system voltage data in conjunction with S/G rpm data, and determines the alternator
is not performing.
Circuit Description
The charge circuit relay used on Greensmaster 3320 machines provides a current path for alternator output
to reach the machine's electrical system. The charge circuit relay is energized by the primary TEC when the
key switch is in either the RUN or START position.
Recommended Service Actions
Step 1: Verify that the fault repeats.
1. Clear the system faults from the InfoCenter. Refer to
2. Operate the machine.
Pass The fault did not repeat. Go to
Note:
If the fault does not repeat, an isolated event has occurred.
Fail The fault repeated. Go to Step 2.
Step 2: Check the voltage of the battery with the engine running.
1. Start the engine
2. Monitor the 12 V battery voltage using a multimeter.
Pass The battery voltage is between 11.5 V to 14.5 V. Go to Step 3.
Fail The battery voltage is not between 11.5 V and 14.5 V. Replace the alternator as shown in the Engine
chapter of the Greensmaster TriFlex 3320/3420 Service Manual, then go to
Service (page 21)
Step 3: Check the continuity of the alternator wire feeding back into
the TEC controller.
1. Disconnect connector P1 at the TEC controller.
2. Locate the white wire at input 12.
3. Unplug the alternator at connector P12.
4. Locate the white wire in the P12 alternator harness plug connector.
5. Using a multimeter, test for continuity between both ends of the white wire.
____FAULT
ALTERNATOR
Returning the Machine to Service (page 21)
and follow the steps listed.
#51____
Clearing Faults from the InfoCenter (page
152
19).
and follow the steps listed.
Returning the Machine to