Mitsubishi Outlander GS45X. Manual — part 535

STARTING SYSTEM

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ENGINE ELECTRICAL

16-39

REASSEMBLY SERVICE POINTS

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>>A<< STOP RING/SNAP RING INSTALLATION

Use a suitable puller to pull the stop ring until it gets over the
snap ring.

INSPECTION

M1162001300469

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COMMUTATOR

1. Support the armature with a pair of V block and turn it to

measure the runout of the surface not rubbed by the
brushes using a dial gauge.

Standard value: 0.05 mm (0.002 inch) or less
Limit: 0.1 mm (0.004 inch)

2. Measure the diameter of the commutator.

Standard value: 29.4 mm (1.157 inch)
Limit: 28.8 mm (1.134 inch)

3. Measure the depth of the undercut between segments.

Standard value: 0.5 mm (0.002 inch)
Limit: 0.2 mm (0.008 inch)

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AK304687

Overrunning
clutch

Stop ring

Snap ring

Stop ring

AB

AK304688

AK304689

AK304690

Segment

Undercut

Mica

AE

STARTING SYSTEM

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ENGINE ELECTRICAL

16-40

BRUSH HOLDER

Push the brush into the brush holder to make sure that the
spring is working on the brush.
If the spring is not working, replace the brush holder.

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OVERRUNNING CLUTCH

1. Make sure that the pinion cannot be turned

counterclockwise and can be turned clockwise freely.

2. Check the pinion for abnormal ware and damage.

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BRUSHES

1. Check the commutator contacting surface of each brush for

abnormal roughness. Also check the height of the brush.
Replace the brush holder if the height is lower than the limit.

Limit: 7.0 mm (0.28 inch)

2. When the contact surface of the brush is rectified or the

brush holder is replaced, recondition the contact surface
with sandpaper wrapped around the commutator.

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ARMATURE COIL

1. Check the armature coil for short circuit as follows.
2. Set the armature in a growler.

CAUTION

Clean the surface of the armature thoroughly before per-
forming the test.
3. While holding a thin strip of iron against the armature in

parallel with its axis, turn the armature slowly. The armature
is normal if the iron strip is not attracted to the armature or it
does not vibrate.

AK201187

AK304691

Free

Lock

AF

AK202846

Brush
height

AE

AK304692

Growler

AE

IGNITION SYSTEM

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ENGINE ELECTRICAL

16-41

4. Check the insulation between commutator segments and

armature coils. The armature coils are properly insulated if
no continuity is present.

5. Check continuity between a segment and another. There is

no open circuit in the tested coil if there is continuity.

IGNITION SYSTEM

GENERAL INFORMATION

M1163000101048

This system is equipped with four <2.4L> or six
<3.0L> ignition coils with built-in power transistors for
each of the cylinders.
Interruption of the primary current flowing in the pri-
mary side of an ignition coil generates a high voltage
in the secondary side of ignition coil. The high volt-
age thus generated is applied to the spark plugs to
generate sparks. The engine control module (ECM)
turns the power transistors inside the ignition coils
alternately on and off.This causes the primary cur-
rents in the ignition coils to be alternately interrupted
and allowed to flow to fire the cylinders in the order
1-3-4-2 <2.4L> or 1-2-3-4-5-6 <3.0L>.

The ECM determines which ignition coil should be
controlled by means of the signals from the camshaft
position sensor and the crank angle sensor. It also
detects the crankshaft position, in order to provide
ignition at the most appropriate timing in response to
the engine operation conditions.
When the engine is cold or running at high altitudes,
the ignition timing is slightly advanced to provide
optimum performance. Furthermore, if knocking
occurs, the ignition timing is gradually retarded until
knocking ceases.

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AK304693

AK304694

IGNITION SYSTEM

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ENGINE ELECTRICAL

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SYSTEM DIAGRAM

AK503331

Manifold absolute pressure
sensor

Mass airflow sensor

Intake air temperature
sensor

Engine coolant temperature
sensor

Accelerator pedal position
sensor

Camshaft position sensor
(Intake, Exhaust)

Crankshaft position sensor

Knock sensor

Ignition switch-ST

ECM

Ignition coil

Cylinder No.

1

2

3

AI

4

Spark plug

MFI relay

Battery

<2.4L>

AK603514

Manifold absolute pressure
sensor

MASS airflow sensor

Intake air temperature
sensor

Engine coolant temperature
sensor

Accelerator pedal position
sensor

Camshaft position sensor

Crankshaft position sensor

Knock sensor

Ignition switch-ST

MFI relay

Battery

1

2

3

4

5

6

AD

ECM

Ignition
coils

Spark plugs

Cylinder No.

<3.0L>