Electrical System Troubleshooting

Symptom Problem Solution

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

Voltage indicator flashing indicating excessive charging voltage

Faulty connection to alternator

Check wiring connections

Bad/faulty alternator ground

Clean mounting contact points

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Symptom Problem Solution

"Chirping" noise from side console

Noise is normal

Because 8030 series tractors use solid state electronic drivers instead of relays, the tractor warning system provides a short turn signal indictor beep replacing the normal 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 F5 fuse

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 F16 fuse

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)

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Symptom Problem Solution

Blower malfunctioning

Blower does not work

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

Blown F4 and/or F6

Replace fuses

Blower operates only in PURGE

Blown blower resistance assembly

See your John Deere dealer

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