Electrical System Troubleshooting

SymptomProblemSolution

Voltage indicator displayed when there is low battery voltage (key ON and engine OFF)

Defective battery

Check electrolyte level and specific gravity

 

Low charging voltage

Have your John Deere™ dealer check charging circuit

 

High resistance in charging circuit

Have your John Deere Dealer check charging circuit

 

Indicator malfunction

Have your John Deere Dealer check indicator

Voltage symbol displayed and service alert indicator flashing indicating low charging voltage (engine running)

Low engine speed

Increase speed

 

Auxiliary drive belt slipping, not charging alternator

Check auxiliary drive belt tension

 

Defective battery

Check electrolyte level and specific gravity

 

Defective alternator

Have your John Deere Dealer check alternator

 

Excessive electrical load

Decrease load

Voltage symbol displayed and service alert indicators flashing indicating excessive charging voltage

Faulty connection to alternator

Check wiring connections

 

Defective regulator

Have your John Deere Dealer check alternator

Chirping noise from side console

Noise is normal

The 8030 series tractors use solid-state electronic drivers instead of relays to control the turn signal lights. The tractor warning system provides a turn signal indicator beep replacing the relay clicking noise.

Batteries will not charge

Loose or corroded connections

Clean and tighten connections

 

Sulfated or worn-out batteries

Check electrolyte level and specific gravity

 

Loose or defective alternator belt

Adjust auxiliary belt tension or replace belt

Starter inoperative

Transmission in gear

Place transmission in PARK

 

Faulty or maladjusted neutral start switch or starter solenoid malfunction

See your John Deere Dealer

 

Loose or corroded connections

Clean and tighten loose connections

 

Low battery output

See your John Deere Dealer

 

Blown fuse 1

Replace fuse

Starter cranks slowly

Low battery output

Check electrolyte level and specific gravity

 

Crankcase oil too heavy

Use correct viscosity oil

 

Loose or corroded connections

Clean and tighten loose connections

Light system does not function; rest of electrical system functions

Blown fuse 18

Replace fuse

Entire electrical system does not function

Faulty battery connection

Clean and tighten connections

 

Sulfated or worn out batteries

Check electrolyte level and specific gravity

 

Blown master fuse

Replace master fuse (in battery compartment)

Blower malfunctioning

Blower does not work

Check for stored codes, total cab electrical load may be exceeding solid state load center capacity

 

Blown fuse 3

Replace fuse

Blower operates only in PURGE

Blown blower resistance assembly

See your John Deere Dealer


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