Starting Problems - Toro Groundsmaster 4300-D Service Manual

Starting Problems

Electrical System: Troubleshooting
Problem
All the electrical power is dead, including the
InfoCenter display.
The starter solenoid clicks, but the starter does
not crank.
Note: If the starter solenoid clicks, the problem
is not in the interlock circuit.
The engine cranks, but does not start.
The glow plug circuit does not operate properly.
The engine cranks, but should not, when the
traction pedal is pressed.
Possible Causes
• The battery is discharged or damaged.
• The battery cables are loose or corroded.
• The fuse F1-1 (15 A) or F1-2 (10 A) is
damaged.
• The ground connection is loose or corroded.
• The key switch or circuit wiring is damaged.
• The fusible link harness at the engine starter
motor is damaged.
• The battery charge is low.
• The battery is discharged or damaged.
• The battery cables are loose or corroded.
• The ground connection is loose or corroded.
• The wiring at the starter motor is damaged.
• The starter solenoid or starter motor is
damaged.
• The fuel tank is empty.
• The fuel filter is plugged.
• The wiring in the engine crank circuit is loose,
corroded, or damaged; refer to the Electrical
Schematic in Appendix A—Foldout Drawings.
• The engine and/or fuel can be too cold.
• The engine fuel pump or circuit wiring is
damaged.
• The engine glow plug circuit does not operate
properly.
• The engine or fuel system is malfunctioning;
refer to
• The hydraulic load is slowing engine cranking
speed (disconnect the hydraulic pump
driveshaft from the engine to test).
• The wiring in the engine glow circuit is loose,
corroded, or damaged; refer to the Electrical
Schematic in Appendix A—Foldout Drawings.
• The engine glow plugs are damaged.
• The glow relay is damaged.
• The fusible link harness at the engine starter
motor is damaged.
• The TEC fuses are damaged.
• The TEC is damaged.
• The traction neutral switch is out of
adjustment.
• The traction neutral switch or circuit wiring
is damaged.
Page 5–34
Chapter 3: Diesel Engine (page
Groundsmaster
16226SL Rev C
3–1).
® 4300-D