John Deere – 1023E, 1025R and 1026R – Crank Circuit Diagnosis 1023E and 1025R

– Machine parked, park brake locked
– Battery charged, Power Circuit tested and functioning
– Transmission in NEUTRAL or as directed
– PTO switch OFF or as directed
– Digital voltmeter (–) lead to battery negative post
– Digital voltmeter (+) lead to designated test point
– Key switch position as directed

Refer to Cranking and Starting Circuit – 1023E or Cranking and Starting Circuit – 1025R for circuit schematics.

In rare cases, the instrument cluster may be faulty. Test all applicable power, grounds, wires, connectors and components before replacing ICC.