Fault 36: 48 Volt Keyswitch Undervolt - Starter/Generator - Toro Greensmaster TriFlex 3300 Manual

Fault 36: 48 Volt Keyswitch Undervolt –
Starter/Generator
InfoCenter Display:
Important:
For this fault, the term "key switch" refers to the 48 V logic power circuit, not to the
ignition switch.
Fault Description
This fault is reported when the 48 V system voltage drops below 36 V at the starter/generator (S/G).
Circuit Description
All circuits on the 48 V bus are supplied with steady 48 V signal. This is called logic, or key switch power.
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 all 48 V fuses.
1. Remove each 48 V fuse and test them individually.
2. Install each fuse after testing, making sure it is properly seated.
3. Verify that the fault repeats.
Pass The fault did not repeat. Go to
Fail The fault repeated. Go to Step 3.
Step 3: Check the logic power connection to the S/G.
1. Using the InfoCenter, bring up the D
2. Select the G
ENERATOR
3. Verify 35–65 V are being input to the generator.
Pass The logic power connection is good. Go to Step 4.
Fail The logic power connection is not good. Repair or replace the faulty wiring. Go to
Machine to Service (page 21)
____FAULT
48 V KEYSWITCH
UNDER V
Returning the Machine to Service (page 21)
Returning the Machine to Service (page 21)
IAGNOSTICS
menu, and scroll to the I
and follow the steps listed.
#36____
Clearing Faults from the InfoCenter (page
screen.
signal.
NPUT
130
19).
and follow the steps listed.
and follow the steps listed.
Returning the