Isuzu Rodeo UE. Manual - part 153

6D2–1

IGNITION SYSTEM (X22SE 2.2L)

RODEO

ENGINE

IGNITION SYSTEM (X22SE 2.2L)

CONTENTS

Service Precaution

6D2–1

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General Description

6D2–1

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Diagnosis

6D2–1

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Ignition Module

6D2–2

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Removal

6D2–2

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Installation

6D2–2

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Spark Plug

6D2–2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Removal

6D2–2

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Inspection and Repair

6D2–2

. . . . . . . . . . . . . . . . . . 

Installation

6D2–3

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Crankshaft Angle Sensor

6D2–3

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Removal

6D2–3

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Installation

6D2–3

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Main Data and Specifications

6D2–4

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Service Precaution

WARNING: THIS VEHICLE HAS A SUPPLEMENTAL
RESTRAINT SYSTEM (SRS).  REFER TO THE SRS
COMPONENT AND WIRING LOCATION VIEW IN
ORDER TO DETERMINE WHETHER YOU ARE
PERFORMING SERVICE ON OR NEAR THE SRS
COMPONENTS OR THE SRS WIRING. WHEN YOU
ARE PERFORMING SERVICE ON OR NEAR THE SRS
COMPONENTS OR THE SRS WIRING, REFER TO
THE SRS SERVICE INFORMATION. FAILURE TO
FOLLOW WARNINGS COULD RESULT IN POSSIBLE
AIR BAG DEPLOYMENT, PERSONAL INJURY, OR
OTHERWISE UNNEEDED SRS SYSTEM REPAIRS.

CAUTION: Always use the correct fastener in the
proper location. When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU will call out those fasteners that require a
replacement after removal. ISUZU will also call out
the fasteners that require thread lockers or thread
sealant. UNLESS OTHERWISE SPECIFIED, do not
use supplemental coatings (Paints, greases, or other
corrosion inhibitors) on threaded fasteners or
fastener joint interfaces. Generally, such coatings
adversely affect the fastener torque and the joint
clamping force, and may damage the fastener. When
you install fasteners, use the correct tightening
sequence and specifications. Following these
instructions can help you avoid damage to parts and
systems.

General Description

Ignition is done by the Ignition Module that fires.
Since the cylinder on exhaust stroke requires less energy
to fire its spark plug, energy from the ignition coils can be
utilized to fire the mating cylinder on compression stroke.
A notch in the timing disc on the crankshaft activates the
crank angle sensor which then sends information such as
firing order and starting timing of ignition coil to the PCM.
By receiving signals such as crank position,engine
speed,water temperature and Manifold Absolute
Pressure (MAP),the PCM controls the ignition timing.

Diagnosis

Refer to Section Drivability and Emissions for the
diagnosis to electronic ignition system (El system).

6D2–2

IGNITION SYSTEM (X22SE 2.2L)

Ignition Module

Removal

1. Disconnect battery ground cable.
2. Ignition module connector.
3. Removal ignition module (1).

080RW001

Installation

1. Install the ignition module (1).

Connect ignition module connector and ignition
coil,then tighten bolt to the specified torque.

Torque: 20 N·m (15 lb ft)

080RW001

2. Connect battery ground cable.

Spark Plug

Removal

1. Remove spark plugs.

Inspection and Repair

The spark plug affects entire engine performance and
therefore its inspection is very important.

f

Check electrode and insulator for presence of
cracks,and replace if any.

f

Check electrode for wear,and replace if necessary.

f

Check gasket for damage,and replace if necessary.

f

Measure insulation resistance with an ohmmeter,and
replace if faulty.

f

Adjust spark plug gap to 0.7 mm (0.027 in) 

∼

 0.8 mm

(0.031 in).

f

Check fuel and electrical systems if spark plug is
extremely dirty.

f

Use spark plugs having low heat value (hot type plug)
if fuel and electrical systems are normal.

f

Use spark plugs having high heat value (cold type
plug) if insulator and electrode are extremely burned.

Sooty Spark Plugs

Much deposit of carbon or oil on the electrode and
insulator of spark plug reduces the engine performance.

Possible causes:

f

Too rich mixture

f

Presence of oil in combustion chamber

f

Incorrectly adjusted spark plug gap

Burning Electrodes

This fault is characterized by scorched or heavily oxidized
electrode or blistered insulator nose.

Possible causes:

f

Too lean mixture

f

Improper heat  value

Measuring Insulation Resistance

f

Measure insulation resistance using a 500 volt
megaohm meter.

6D2–3

IGNITION SYSTEM (X22SE 2.2L)

f

Replace spark plugs if measured value is out of
standard.

Insulation resistance: 50 M

W

 or more

011RS010

Cleaning Spark Plugs

f

Clean spark plugs with a spark plug cleaner.

f

Raise the ground electrode to an angle of 45 to 60
degrees. if electrode is wet,dry it before cleaning.

f

After spark plug is thoroughly cleaned,check insulator
for presence of cracks.

f

Clean threads and metal body with a wire brush.

f

File the electrode tip if electrode is extremely worn.

f

Bend the ground electrode to adjust the spark plug
gap.

011RS011

Installation

1. Spark plugs

f

Tighten spark plugs to the specified torque.

Torque: 25 N·m (18 lb ft)

Crankshaft Angle Sensor

Removal

1. Disconnect battery ground cable
2. Wiring connector from crankshaft angle sensor.
3. Remove crankshaft angle sensor from cylinder block.

015RW021

Installation

1. Install crankshaft angle sensor into the cylinder block.

Before installation,apply small amount of engine oil to
the O–ring.

Torque: 6 N·m (4 lb ft)

2. Reconnect wiring connector to crankshaft angle

sensor.

6D2–4

IGNITION SYSTEM (X22SE 2.2L)

Main Data and Specifications

General Specifications

Ignition System

Ignition Form

Electronic Ignition System (El system) with Crankshaft angle Sensor

Spark Plug

Type

Electronic Spark Control

No. of Coils and Type

2 Solid State

Coil Location

Engine–mounted

Torque

20 N·m (14 lb ft)