Electrical System Troubleshooting

Symptom Problem Solution

Service alert indicator flashing when there is low battery voltage (key ON and engine stopped)

Excessive start-stop operation

Allow engine to continue running

Defective batteries

Replace

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

Service alert indicator flashing indicating low charging voltage (engine running)

Low engine speed

Increase speed

Belt slipping

Check belt tension

Defective batteries

Replace

Defective alternator

Have your John Deere dealer check alternator

Excessive electrical load

Decrease load

Service alert indicator flashing indicating excessive charging voltage

Faulty connection to alternator

Check wiring connections

Defective regulator

Have your John Deere dealer check alternator

Excessive electrical load

Decrease load

Batteries will not charge

Loose or corroded connections

Clean and tighten connections

Sulfated or worn-out batteries

Replace

Loose or defective alternator belt

Adjust belt tension or replace belt

OUMX005,00016D6 -19-22MAR05-1/2


Symptom Problem Solution

Starter inoperative

Transmission in gear

Place transmission in neutral

Faulty or maladjusted starter safety 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

Replace fuse

Starter cranks slowly

Low battery output

Replace batteries

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

Replace fuse

Entire electrical system does not function

Faulty battery connection

Clean and tighten connections

Sulfated or worn out batteries

Replace batteries

Blown fuse

Replace fuse

Blown or loose fusible link

Replace fusible link (under seat)

Blower malfunctioning

Blower does not operate

Check all blower fuses

Blower operates only in PURGE

Blown blower resistance assembly

See your John Deere dealer

OUMX005,00016D6 -19-22MAR05-2/2