2004 ISUZU TF SERIES Workshop Manual

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Page 2545 of 4264

ISUZU TF SERIES 2004 Workshop Manual ENGINE ELECTRICAL 6D1-3

Diagnosis
1. Visual Inspection
Inspect the battery for obvious physical damage, such as a
cracked or broken case, which would permit electrolyte loss.
Replace the bat

Page 2546 of 4264

ISUZU TF SERIES 2004 Workshop Manual 6D1-4 ENGINE ELECTRICAL

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 lev

6D1-4 ENGINE ELECTRICAL

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 o
f
charge reduced if the battery feels hot to the touch.
Battery charging should be discontinued or the rate o
f
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 othe
r
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, o
r
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.

Page 2547 of 4264

ISUZU TF SERIES 2004 Workshop Manual ENGINE ELECTRICAL 6D1-5

Battery fluid is a highly corrosive acid.
Should battery fluid come in contact with yo

ENGINE ELECTRICAL 6D1-5

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 vahicle. 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 vahicle is equipped with an automatic transmission,
place the selector level in the "PARK" position.
If the vehicle is equipped with a manual transmission, place
the shift lever in the "NEUTRAL" position.
Turn "OFF" the ignition.
Turn "OFF" 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 o
r
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 "OFF".
6. Start the engine of the vehicle with the dead battery.
7. To remove the jumper cables, follow the above directions in
reverse order.
Be sure to first disconnect the negative cable from the
vehicle with the discharged battery.

Page 2548 of 4264

ISUZU TF SERIES 2004 Workshop Manual 6D1-6 ENGINE ELECTRICAL
1
5
3 42

Removal
1. Remove negative cable (1).
2. Remove positive cable (2).
3. Remove retainer screw and rods (3).
4. Remove retainer (4).
5. Remove battery (5).

Page 2549 of 4264

ISUZU TF SERIES 2004 Workshop Manual IGNITION SYSTEM 6D2-1
SECTION 6D2
IGNITION SYSTEM
CONTENTS
PAGE
General Description........................................................................................................ 6D2-

Page 2550 of 4264

ISUZU TF SERIES 2004 Workshop Manual 6D2-2 IGNITION SYSTEM

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

Page 2551 of 4264

ISUZU TF SERIES 2004 Workshop Manual IGNITION SYSTEM 6D2-3

Spark Plug
Removal
1. Remove spark plugs.
Inspection and Repair
The spark plug affects entire engine performance and
therefore its inspection is very importa

Page 2552 of 4264

ISUZU TF SERIES 2004 Workshop Manual 6D2-4 IGNITION SYSTEM

Cleaning Spark Plugs

Clean spark plugs with a spark plug cleaner.
Raise the ground electrode to an angle of 45 to 60 degrees.
if electrode is wet, dry it gefore cl

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