[SpudRider]

Cooling System Check

When the coolant system reaches its highest temperature, the display will flash. This signals the engine is overheating. Stop as soon as possible, and fix the problem to avoid engine damage.

Check the fan diode.

Turn on the ignition switch. Set the digital multimeter to measure voltage on the 20 VDC Scale.

Check the diode input voltage. Connect the red probe of the multimeter to the black wire of the diode. Connect the black probe of the multimeter either to the green wire, or the chassis. Consult the photograph below to verify the correct placement of the probes. Input voltage to the diode should be 12 volts.



Check the diode output voltage. Connect the red probe of the multimeter to the black/yellow wire of the diode. Connect the black probe of the multimeter either to the green wire, or the chassis. Consult the photograph below to verify the correct placement of the probes. Output voltage from the diode should be 12 volts.