Mitsubishi 380. Manual — part 249

CHARGING SYSTEM

ENGINE ELECTRICAL

16-18

2. Check the continuity between the slip ring and the core. If

there is continuity, replace the rotor.

.

STATOR CHECK

1. Check the continuity between the coil lead. If there is no

continuity, replace the stator.

2. Check the continuity between the coil and the core. If there

is continuity, replace the stator.

.

RECTIFIER CHECK

1. Check the continuity between the positive rectifier and the

stator coil lead connection terminal with a tester. If there is
continuity between the terminals, the diode is shorted, so
replace the rectifier.

AKX00361

AKX00362

AKX00363

AKX00364

CHARGING SYSTEM

ENGINE ELECTRICAL

16-19

2. Check the continuity between the negative rectifier and the

stator coil lead connection terminal with a tester. If there is
continuity between the terminals, the diode is grounded, so
replace the rectifier.

3. Check the continuity of the three diodes by connecting an

ohmmeter to both ends of each diode. If there is continuity
between the directions, or if there is no continuity, the diode
is damaged, so replace the rectifier.

.

BRUSH CHECK

1. Replace the brush if the brush protrusion length shown in

the illustration is below the minimum limit value.

Minimum limit: 2 mm (0.08 inch)

2. The brush can be removed by unsoldering the brush lead

wire.

3. When installing a new brush, push the brush in to the brush

holder, and solder the lead wire.

AKX00365

AKX00366

AKX00367AB

PROTRUSION
LENGTH

AKX00368

SOLDERED

AB

STARTING SYSTEM

ENGINE ELECTRICAL

16-20

STARTING SYSTEM

GENERAL DESCRIPTION

M1162000100235

If the ignition switch is turned to the "START" posi-
tion, current flows in the coil provided inside mag-
netic switch, attracting the plunger. When the plunger
is attracted, the lever connected to the plunger is
actuated to engage the starter clutch.
On the other hand, attracting the plunger will turn on
the magnetic switch, allowing the "B" terminal and
"M" terminal to conduct. Thus, current flows to
engage the starter motor.

When the ignition switch is returned to the "ON" posi-
tion after starting the engine, the starter clutch is dis-
engaged from the ring gear.
An overrunning clutch is provided between the pinion
and the armature shaft, to prevent damage to the
starter.

OPERATION

When the ignition switch is switched to the "ST" posi-
tion while the selector lever is at the "P" or "N" range,
the contact (magnetic switch) of the starter is
switched ON and the starter motor is activated.

AK202970

PULL-IN COIL

HOLDING
COIL

PLUNGER

LEVER

PINION GEAR

OVERRUNNING
CLUTCH

YOKE

BRUSH

ARMATURE

IGNITION
SWITCH

BATTERY

+

–

AC

B

M

S

STARTING SYSTEM

ENGINE ELECTRICAL

16-21

STARTING SYSTEM DIAGNOSIS

M1162000700293

TROUBLESHOOTING HINTS

The starter motor does not operate at all.

WARNING

Battery posts, terminals and related accessories con-
tain lead and lead compounds. WASH HANDS AFTER
HANDLING.

• Check the starter (coil).

• Check for poor contact at the battery terminals and

starter.

• Check the transmission range switch.

The starter motor doesn't stop

• Check the starter (magnetic switch).

TROUBLESHOOTING GUIDE

The starting system troubleshooting guide is shown in the fol-
lowing steps.

WARNING

Battery posts, terminals and related accessories con-
tain lead and lead compounds. WASH HANDS AFTER
HANDLING.

STEP 1.

Q: Is the battery in good condition? (Refer to GROUP 54A,

Chassis Electrical

− Battery − On-vehicle Service −

Battery Check

P.54A-5

.)

YES : Go to Step 2.
NO : Charge or replace the battery.

STEP 2.

• Disconnect the starter motor S (solenoid) terminal connec-

tor.

• Using a jumper wire, apply battery positive voltage to the

starter motor S (solenoid) terminal.

• Check the engine condition.

OK: Turns normally

Q: Dose the starter motor operate normally?

YES :

• Check the ignition switch (Refer to GROUP 54A,

Chassis Electrical

− Ignition Switch − Ignition

Switch

− Inspection

P.54A-44

.)

• Check the transmission range switch. (Refer to

GROUP 23A, Automatic Transaxle

− On-vehicle

Service

− Essential Service − Transmission Range

Switch Check

P.23A-294

.)

• Check the wire between the battery and starter

motor S (solenoid) terminal.

NO : Go to Step 3.