2002 ISUZU AXIOM ignition

6C±9 ENGINE FUEL (6VE1 3.5L)
NOTE: Do not use tools of any kind. Only use bare hands
when disconnecting the connector. Use a lubricant (light
oil) and/or push and pull the connector until the pipe is
disconnected.
Cover the connectors that was removed with a plastic
bag, to prevent dust or rain water from entering.
140R100028
Reuse of Quick±Connector

Replace the port and connector if scratch, dent or
crack is found.

Remove any dirt build up on the port when installing
the connector. Replace the connector, if there is any
forms of rust, dent, scratch.

After cleaning the port, insert it straight into the
connector until it clicks. After it clicks, try pulling it out
to make sure that it is not drawn and is securely
locked.
140R100036
Assembling Advice
By applying engine oil or light oil to the pipe, port makes
pipe assembly easier. The pipe assembly should take
place immediately after applying oil (to prevent dust from
sticking to the pipe surface ± which may decrease sealing
ability).
Test/Inspection After Assembling
1. Reconnect the battery negative cable.
2. Turn the ignition key to the ªONº position and listen for
pump start-up sound. Inspect for leaks, the fuel
pressure will increase as the fuel pump is actuated.
3. Perform leak inspection (step 2) several times.
4. Start the engine and observe the engine idle speed.
The presence of dirt in the fuel system may affect the
fuel injection system.

6C±10
ENGINE FUEL (6VE1 3.5L)
Fuel Pump Relay
General Description
In order to control the fuel pump and sender (FPS)
operation, the FPS relay is provided. When the starter
switch is turned to ªONº position, the FPS relay operates
the FPS for 2 seconds.
When the key is turned to ªSTARTº position, the Engine
Control Module receives the reference pulse from the
Ignition Control Module and it operates the relay, again
causing the FPS to feed fuel.
Fuel Tank
Fuel Tank and Associated Parts
140R200006
Legend
(1) Fuel Tank Assembly
(2) Fuel Tank Fixing Bolt (QTY: 5)
(3) Fuel Tank Fixing Nut (QTY: 1)
(4) Separator Fixing Bolt (QTY: 2)
(5) Fuel Filler Hose(6) Fuel Vent Hose
(7) Fuel Feed Hose
(8) Fuel Return Hose
(9) Vapor Pressure Sensor Connector
(10) Fuel Feed Pump Connector

ENGINE ELECTRICAL (6VE1 3.5L)6D1±3
Battery Charging
Observe the following safety precautions when charging
the battery:
1. Never attempt to charge the battery when the fluid
level is below the lower level line on the side of the
battery. In this case, the battery must be replaced.
2. Pay close attention to the battery during charging
procedure.
Battery charging should be discontinued or the rate of
charge reduced if the battery feels hot to the touch.
Battery charging should be discontinued or the rate of
charge reduced if the battery begins to gas or spew
electrolyte from the vent holes.
3. In order to more easily view the hydrometer blue dot
or ring, it may be necessary to jiggle or tilt the battery.
4. Battery temperature can have a great effect on
battery charging capacity.
5. The sealed battery used on this vehicle may be either
quick charged or slow charged in the same manner as
other batteries.
Whichever method you decide to use, be sure that
you completely charge the battery. Never partially
charge the battery.
Jump Starting
Jump Starting with an Auxiliary (Booster)
Battery
CAUTION: Never push or tow the vehicle in an
attempt to start it. Serious damage to the emission
system as well as other vehicle parts will result.
Treat both the discharged battery and the booster
battery with great care when using jumper cables.
Carefully follow the jump starting procedure, being
careful at all times to avoid sparking.
WARNING: FAILURE TO CAREFULLY FOLLOW THE
JUMP STARTING PROCEDURE COULD RESULT IN
THE FOLLOWING:
1. Serous personal injury, particularly to your eyes.
2. Property damage from a battery explosion, battery
acid, or an electrical fire.
3. Damage to the electronic components of one or both
vehicles particularly.
Never expose the battery to an open flame or electrical
spark. Gas generated by the battery may catch fire or
explode.
Remove any rings, watches, or other jewelry before
working around the battery. Protect your eyes by wearing
an approved set of goggles.
Never allow battery fluid to come in contact with your eyes
or skin.Never allow battery fluid to come in contact with fabrics or
painted surfaces.
Battery fluid is a highly corrosive acid.
Should battery fluid come in contact with your eyes, skin,
fabric, or a painted surface, immediately and thoroughly
rinse the affected area with clean tap water.
Never allow metal tools or jumper cables to come in
contact with the positive battery terminal, or any other
metal surface of the vehicle. This will protect against a
short circuit.
Always keep batteries out of reach of young children.
Jump Starting Procedure
1. Set the vehicle parking brake.
If the vehicle is equipped with an automatic
transmission, place the selector level in the ªPARKº
position.
If the vehicle is equipped with a manual transmission,
place the shift lever in the ªNEUTRALº position.
Turn ªOFFº the ignition.
Turn ªOFFº all lights and any other accessory
requiring electrical power.
2. Look at the built±in hydrometer.
If the indication area of the built±in hydrometer is
completely clear, do not try to jump start.
3. Attach the end of one jumper cable to the positive
terminal of the booster battery.
Attach the other end of the same cable to the positive
terminal of the discharged battery.
Do not allow the vehicles to touch each other. This will
cause a ground connection, effectively neutralizing
the charging procedure.
Be sure that the booster battery has a 12 volt rating.
4. Attach one end of the remaining cable to the negative
terminal of the booster battery.
Attach the other end of the same cable to a solid
engine ground (such as the air conditioning
compressor bracket or the generator mounting
bracket) of the vehicle with the discharged battery.
The ground connection must be at least 450 mm (18
in.) from the battery of the vehicle whose battery is
being charged.
WARNING: NEVER ATTACH THE END OF THE
JUMPER CABLE DIRECTLY TO THE NEGATIVE
TERMINAL OF THE DEAD BATTERY.
5. Start the engine of the vehicle with the good battery.
Make sure that all unnecessary electrical accessories
have been turned ªOFFº.
6. Start the engine of the vehicle with the dead battery.

6D2±1
IGNITION SYSTEM (6VE1 3.5L)
AXIOM
ENGINE
IGNITION SYSTEM (6VE1 3.5L)
CONTENTS
Service Precaution 6D2±1. . . . . . . . . . . . . . . . . . . . . .
General Description 6D2±2. . . . . . . . . . . . . . . . . . . . .
Diagnosis 6D2±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ignition Coil 6D2±3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 6D2±3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Repair 6D2±3. . . . . . . . . . . . . . . . . .
Installation 6D2±3. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Spark Plug 6D2±5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . Removal 6D2±5. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Repair 6D2±5. . . . . . . . . . . . . . . . . .
Installation 6D2±5. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Crankshaft Position Sensor 6D2±6. . . . . . . . . . . . . . .
Removal 6D2±6. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 6D2±6. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main Data and Specifications 6D2±7. . . . . . . . . . . . .
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.

6D2±2
IGNITION SYSTEM (6VE1 3.5L)
General Description
Ignition is done by the electronic ignition (El) that directly
fires the spark plugs from ignition coils through spark plug
wires without using a distributor. The firing orders are
selected No.1, No.2, No.3, No.4, No.5, and No6.
Since the cylinder on exhaust stroke requires less energy
to fire its ignition plug, energy from the ignition coils can be
utilized to fire the mating cylinder on compression stroke.
After additional 360
rotation, respective cylinder strokes
are reversed.
The EI consists of six ignition coils,ignition control
module, crank position sensor, powertrain control module
(PCM) and other components.
The ignition coils are connected with the PCM by means
of a 80 pin connector.The ignition control module turns on/off the primary circuit
of ignition coils, and also it controls the ignition timing at
the engine speed below 538 rpm.
A notch in the timing disc on the crankshaft activates the
crank position sensor which then sends information such
as firing order and starting timing of each ignition coil to
the PCM.
Further, the El employs ignition control (IC) to control
similar to a distributor system.
By receiving signals such as crank position,engine
speed, water temperature and Manifold Absolute
Pressure (MAP), the PCM controls the ignition timing.
D06RY00037
Diagnosis
Refer to Section Drivability and Emissions for the
diagnosis to electronic ignition system (El system).

6D2±3
IGNITION SYSTEM (6VE1 3.5L)
Ignition Coil
Removal
1. Disconnect battery ground cable.
2. Ignition coil connector and ignition coil.

Disconnect three connector from ignition coil.

Remove harness bracket bolt on cylinder head
cover.

Remove fixing bolts on ignition coil.
060RY023
Legend
(1) Ignition Coil Connector
(2) Bolt
(3) Ignition Coil Assembly
Inspection and Repair
Check the ignition coil assembly for insulation. Check
terminals for corrosion or damage, and replace as
necessary.
Measuring resistance of ignition coil assembly.
Terminal No.
Limit
1 to 2Without 0 ohm or infinity
maximum ohm.
1 to 3Same as above
2 to 3Same as above
Measure resistance of ignition coil assembly, and replace
the ignition coil assembly if its value exceeds the
standard.
060RW006
Installation
1. Install the ignition coil assembly (3).
Connect ignition coil connector (1) and ignition coil
(3), then tighten bolt (2) to the specified torque.
Torque: 4 N´m (35 lb in)
060RY023

6D2±4
IGNITION SYSTEM (6VE1 3.5L)
CAUTION: Ignition coil assembly #6 is different
from ignition coil assembly from #1 to #5. Ignition
coil assembly #6 is short type. So, note it when
installing ignition coil assembly of #6.
060RY00002
Legend
(1) Long type Ignition Coil Assemblies (#1 ~ #5)
(2) Short type Ignition Coil Assembly (#6)
2. Connect battery ground cable.

6D2±5
IGNITION SYSTEM (6VE1 3.5L)
Spark Plug
Removal
1. Remove spark plugs.
Inspection and Repair
The spark plug affects entire engine performance and
therefore its inspection is very important.

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

Check electrode for wear, and replace if necessary.

Check gasket for damage, and replace if necessary.

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

Adjust spark plug gap to 1.0 mm ± 1.1 mm (0.0394 in ±
0.0433 in).
011RS011
NOTE:
± Do not adjust the spark plugs gap without new
spark plugs.
± Do not damage to tip of spark plugs.
± Do not cleaning the spark plugs. If require the
cleaning it due to heavy dirt, it is allowed only 20
seconds to be used spark plug cleaner.

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

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

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:

Too rich mixture

Presence of oil in combustion chamber

Incorrectly adjusted spark plug gap
Burning Electrodes
This fault is characterized by scorched or heavily oxidized
electrode or blistered insulator nose.
Possible causes:

Too lean mixture

Improper heat value
Measuring Insulation Resistance

Measure insulation resistance using a 500 volt
megaohm meter.

Replace spark plugs if measured value is out of
standard.
Insulation resistance: 50 M
or more
011RS010
Installation
1. Spark plugs

Tighten spark plugs to the specified torque.
Torque: 18 N´m (13 lb ft)