Fault 117: Internal Regulator Undervolt-M/G - Toro Reelmaster 5010-H Diagnostic Manual

Fault 117: Internal Regulator
Undervolt—M/G
InfoCenter Display:
Fault Description
Insufficient voltage occurred at the internal voltage regulator and disabled the generator. The 15V undervoltage
fault is reported when the component measures a 15V system voltage under an undervoltage set point. This
fault causes the motor to be disabled. A method of detecting a system shutdown is also desirable to prevent
false recording of shutdowns as under voltage faults.
Circuit Description
The motor/generator controller monitors an internal voltage regulator.
Conditions for Setting the Fault
Insufficient voltage occurred at the internal voltage regulator and disabled the generator.
Note:
This fault is most likely to occur if the motor/generator loses power unexpectedly without the proper
shutdown sequence.
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: Inspect main harness connector P37.
Main harness connector P37 is attached to the motor/generator. Remove the connector from the
motor/generator and inspect it for:
•
Damage
•
Recessed pins
•
Wiring integrity
•
Proper engagement of the harness connector P37 to the connector on the motor/generator.
_____FAULT #117_____
Int. Reg.
LO
Clearing Faults from the InfoCenter (page
Returning the Machine to Service (page 22)
427
V
and follow the steps listed.
21).