2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 402Get this manual

2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 402

ELECTRICAL VOLTAGE DROP TEST The Voltage Drop Test is used to test for bad connectionsWhen performing the test, you are testing
or starter runon condition are: Transmission switch for proper function Starter solenoid for proper function Brake switch
for proper function Wire harness for loose connections, or bad harness diodes leading to and from these components Proper
ground to frame Key switch for proper function Should all these items be found in working order, the harness diodes (non-serviceable)
or starter motor may be at fault Voltage should not exceed .1 Vdc per connection Starter Lockout Troubleshooting- EFI The
starter lockout is controlled by the ECUPin #52 of the ECU senses the transmission signal and determines if the switch is
in Neutral or ParkWhen the conditions are met, the ECU will activate SSCB #2 Pin 'N' to ground the starter solenoidPin #35
of the ECU senses when the brake is applied and activates Pin #2 pin to ground the solenoidThe ECU will allow starting in
Neutral or Park without the brake appliedApplying the brake overrides this system and allows starting regardless of transmission