D439E Service Manual 3. Engine Electrical System (D439E)
141
Starting System
Description
The starting system includes battery, starter motor,
solenoid switch, Ignition switch, inhibitor switch,
ignition lock switch, connection wires and battery
cable. When the ignition key is turned to the
"START" position, electric current flows so that an
electric power is supplied to the starter motor's
solenoid coil. After that, solenoid plunger and clutch
shift lever are activated.
Then the clutch pinion engages to the ring gear so
that the engine is cranked. In order to prevent
damage caused by excessive rotation of the starter
armature when the engine starts, the clutch pinion
gear overruns.
Starter Circuit Trouble Diagnosis
NOTE : Battery should be fully charged and In good
condition.
1. Remove supply pump relay from fuse box.
2. For A/T with the shift lever at N or P position (A/T),
and for M/T, with tile clutch pedal being depressed
(M/T), turn the ignition switch to START.
NOTE
1. If the starter cranks the engine successfully,
starting system is normal. If the starter falls to
crank the engine go to next step to check.
2. When the ignition switch returns to "ON" position
from" START" after the switch is released, if the
pinion gear is not disengaged from ring gear,
check the following items.
a. Check solenoid plunger and switch for any
troubles.
b. Check pinion gear or overrunning clutch for any
damage.
3. Check the connection state of each battery,
terminals, the connection state between battery (-)
cable and the body, the engine ground cable, the
connection state of the starter "B" terminal and
any corroded portion. And, then crank the engine
again.
NOTE : If the starter cranks the engine, poor
connection is the cause for the trouble. Then, the
starting system is now normal. If it fails to crank
again, go to next step to continue the checking.
4. After disconnect the connector from "S" terminal
of starter solenoid connect the "B" terminal of
solenoid to the "S" terminal of solenoid using jump
wire.
NOTE : If starter cranks the engine go to next step
to continue checking. Otherwise, remove the starter
to repair or replace If necessary.
5. Check the following items until an open circuit is
found.
a. Check the connectors and wires between the
interior fuse box and the ignition switch, and
connectors and wires between the interior fuse
box and the starter.
b. Check the ignition switch.
c. Check the shift range switch and connector and
the ignition lock switch and connector.
d. Check the starter relay.
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