Testing Relay
1. Power Mower ON.
2. Set DMM to “
DC Volts
”.
3. Check for 12V on the small terminals
(under the black caps).
4. Check for approximately 39+V on
the large terminals (under the red caps).
Alternate method to test relay
independent of mower:
1. unbolt one leg of diode if equipped.
2. Set DMM to measure
Resistance.
3. Connect DMM to large terminals.
4. Apply 12V to small terminals.
5. You should hear a click as the relay switch
Is activated, and measure small resistance
at relay terminals
Nominal resistance 1.5 Ohms
39
NEG
(-)
POS
(+)
