Doosan D35S-5 Service Manual page 132

Starter
Troubles
Engine does not crank
Cranking is slow
Starter keeps rotating
Starter motor operates
but engine does not
crank
Pre-Heater
Troubles
Engine does not start when the
coolant temperature is below 0℃
If engine stops after 1st
explosion or Idle is unstable
when the coolant temperature is
below 0℃
Pre-heating indicator remains off
D439E Service Manual
Possible causes
Battery voltage is low
Battery cable is loose corroded or worn
Fusible link is short
Starter is defective
Ignition switch is defective
Battery voltage is low
Battery cable is loose corroded or worn
Starter is defective
Starter is defective
Ignition switch is defective
Wiring is short
Pinion gear teeth are worn or damaged or
motor is defective
Ring gear teeth are worn 01 damaged
Possible causes
Wiring connection is loose or
wiring is defective
Coolant sensor is defective
Pre-heater plug is defective
Pre-heater control unit is defective
Connection is loose or wiring is
defective
Pre-heating plug is defective
Pre-heating plug relay is defective
Lamp is short
Connection is loose or wiring is
cracked
Wiring is short
Pre-heater control unit is defective
Charge or replace the battery
Repair or replace the cable
Replace the fusible link
Replace the starter
Replace the Ignition switch
Charge or replace tile battery
Repair or replace the cable
Replace the starter
Replace the starter
Replace the ignition switch
Repair or replace the wire
Replace the starter
Replace the flywheel gear or
torque converter
Repair the Wiring or tighten the
connection
Replace the coolant temperature
sensor
Replace the pre-heater plug
Replace the unit
Correct or tighten the wiring or
connection
Replace tile pre-heater plug
Replace the relay
Replace the lamp
Replace tile wiring or tighten the
connection
Replace tile wiring
Replace the unit
130 3. Engine Electrical System (D439E)
Corrective action
Corrective action