Testing 48V-to-12V (DC-DC) Converter
Red and Black are 48V input
Blue and green are 12V output
Yellow is an enable wire (48V) to turn on the output
Testing Converter Fuse:
1. DISCONNECT MAIN POWER.
2. Check continuity of fuse (see next page)
3. If fuse is bad, replace only with same type
and Amperage
(12V, 2A automotive fuse)
1. Turn mower on. Set DMM to “
DC Volts
”
2. Measure ~48V between Red and black wire
as indicated.
3. Check for 12V output at blue and yellow wire.
To test Converter Module Independently
:
1. Apply 48V “+” to Red
AND
Yellow wire.
2. Apply “-” to black wire.
3. Check for 12V output at blue and green wire.
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Testing Converter
:
48V-to-12V converter module
