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STARTER MOTOR DOES NOT STOPCheck the magnetic switch. ON-VEHICLE TESTING STARTER MOTOR DOES NOT OPERATE 1. Is the battery in good condition? If Yes, go to the next step. If No, then charge
or replace battery.
2. Disconnect the starter motor "S" (solenoid) terminal connector. Using a jumper
wire, apply battery positive voltage to starter motor "S" (solenoid) terminal.
Does starter motor operate normally? If Yes, then check ignition switch,
transmission range switch and the line between the battery and starter motor
"S" (solenoid) terminal. If No, then go to the next step.
3. Check if the cable between starter "B" (battery) terminal and battery positive
terminal for connection and continuity. Is the starter cable in good condition? I
f
Yes, then go to the next step. If No, then repair or replace the cable.
4. Check the connection and continuity of the cable between starter motor body
and the negative battery terminal. Is the ground line in good condition? If Yes,
then go to the next step. If No, then repair or replace cable.
5. Is the starter motor in good condition? If Yes, problem is excessive rotational
resistance of the engine. If No, then replace the starter motor.
BENCH TESTING MAGNETIC SWITCH PULL-IN TEST 1. Disconnect field coil wire from "M" terminal of the magnetic switch. See Fig.
3 . WARNING:Battery posts, terminals and related accessories
contain lead and lead compounds. Wash hands after
handling.
CAUTION: To prevent coil from burning, DO NOT apply voltage
to starter assembly for more than 10 seconds.
2004 Mitsubishi Endeavor Limited
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2. Connect a 12-volt battery between "S" terminal and "M" terminal.
3. If the pinion moves out, the pull-in coil is good. If it doesn't, replace the
magnetic switch.
Fig. 3: Magnetic Switch Pull
-in Test
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
MAGNETIC SWITCH HOLD IN TEST
CAUTION: To prevent coil from burning, DO NOT apply voltage
to starter assembly for more than 10 seconds.
2004 Mitsubishi Endeavor Limited
2004 STARTING & CHARGING SYSTEMS Starters - Endeavor
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1. Disconnect the field coil wire from "M" terminal of the magnetic switch. See
Fig. 4
.
2. Connect 12-volt battery between the "S" terminal and body.
3. Manually pull out the pinion as far as the pinion stopper position.
4. If the pinion remains out, everything is operating properly. If pinion moves in,
hold-in circuit is open. Replace the magnetic switch.
Fig. 4: Magnetic Switch Hold
-in Test
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
MAGNETIC SWITCH RETURN TEST
2004 Mitsubishi Endeavor Limited
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1. Disconnect the field coil wire from the "M" terminal of the magnetic switch.
SeeFig. 5
.
2. Connect a 12-volt battery between the "M" terminal and body.
3. Pull the pinion out and release. If the pinion quickly returns to its original
position, everything is operating properly. If it doesn't, replace the magnetic
switch. WARNING:Be careful not to get your fingers caught when
pulling out the pinion.
CAUTION: To prevent coil from burning, DO NOT apply voltage
to starter assembly for more than 10 seconds.
2004 Mitsubishi Endeavor Limited
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Fig. 5: Magnetic Switch Return Test
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
FREE RUNNING TEST 1. Place the starter motor in a vise equipped with soft jaws and connect a fully-
charged 12-volt battery to starter motor.
2. Connect a test ammeter (100-ampere scale) and carbon pile rheostat in series
between the positive battery terminal and starter motor terminal. See Fig. 6
.
3. Connect a voltmeter (15-volt scale) across the starter motor.
4. Rotate carbon
pile to full resistance
position.
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5. Connect the battery cable from the negative battery terminal to the starter
motor body.
6. Adjust the rheostat until the battery positive voltage shown by the voltmeter is
11V.
7. Confirm that the maximum amperage is 95 amps, and that the starter motor
turns smoothly and freely.
Fig. 6: Free Running Test
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
COMMUTATOR CHECK 1. Place the armature on a pair of V- blocks and check the runout by using a dial
gauge. See STARTER SPECIFICATIONS
.
2. Check the outer diameter of the commutator. See STARTER
SPECIFICATIONS
.
3. Check the depth of the undercut between segments. See STARTER
SPECIFICATIONS
.
4. Replace commutator if runout, diameter or undercut depth is not within
specification.
BRUSH CHECK
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1. Check the brush for roughness of the surface that contacts the commutator and
check the brush length. Replace the brush holder if this measurement exceeds
the limit. The minimum limit is .28" (7.0 mm)
2. In the case contacting surface has been corrected or the brush has been
replaced, correct the contacting surface winding sandpaper around the
commutator. OVERRUNNING CLUTCH 1. While holding clutch housing, rotate the pinion. Drive pinion should rotate
smoothly in one direction, but should not rotate in opposite direction. See Fig.
7 . If clutch does not function properly, replace overrunning clutch assembly.
2. Inspect the pinion for wear or burrs. If pinion is worn or burred, replace the
overrunning clutch assembly. If pinion is damaged, also inspect the ring gear
for wear or burrs.
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Fig. 7: Checking Overrunning Clutc
h
Courtesy of KIA MOTORS AMERICA, INC.
FRONT & REAR BRACKET BUSHING CHECK Inspect the bushing for wear or burrs. If the bushing is worn or burred, replace the
front bracket assembly or rear bracket assembly. ARMATURE CHECK 1. Check that the armature coil is not grounded.
2. Place armature in a growler. See Fig. 8
.
3. Hold a thin steel blade parallel and just above while rotating the armature
slowly in the growler. A shorted armature will cause a blade to vibrate and
attract to the core. Replace the shorted armature.
4. Check the insulation between the armature coil cores and the commutator
segments. They are normal if there is no continuity. See Fig. 9
.
5. Check for continuity between the segments. The condition is normal if there is
continuit
y. See Fig. 10
.
2004 Mitsubishi Endeavor Limited
2004 STARTING & CHARGING SYSTEMS Starters - Endeavor