2004 ISUZU TF SERIES battery

IGNITION SYSTEM (6VE1 3.5L) 6D2-3
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.



RTW4Z0SH000101
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 2 Without 0 ohm or infinity
maximum ohm.
1 to 3 Same as above
2 to 3 Same 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 (0.4 kg




m/3 lb ft)



RTW4Z0SH000101
2. Connect battery ground cable.

IGNITION SYSTEM (6VE1 3.5L) 6D2-5
Crankshaft Position Sensor
Removal
1. Disconnect battery ground cable
2. Wiring connector from crankshaft position sensor.
3. Remove crankshaft position sensor from cylinde
r
block.




012RS008
Installation
1. Install crankshaft position sensor into the cylinder
block.
Before installation, apply small amount of engine
oil to the O–ring.
Torque: 10 N




m (1.0 kg




m/7 lb ft)
2. Reconnect wiring connector to crankshaft position
sensor.

6D3-2 STARTING AND CHARGING SYSTEM (6VE1 3.5L)
Starting System
General Description
Cranking Circuit
The cranking system consists of a battery, starter,
starter switch, starter relay, etc. These main
components are connected.
Starter
The cranking system employs a magnetic type
reduction starter in which the motor shaft is also used
as a pinion shaft. When the starter switch is turned on,
the contacts of magnetic switch are closed, and the
armature rotates. At the same time, the plunger is
attracted, and the pinion is pushed forward by the shif
t
lever to mesh with the ring gear.
Then, the ring gear runs to start the engine. When the
engine starts and the starter switch is turned off, the
plunger returns, the pinion is disengaged from the ring
gear, and the armature stops rotation. When the engine
speed is higher than the pinion, the pinion idles, so tha
t
the armature is not driven.

6D3-4 STARTING AND CHARGING SYSTEM (6VE1 3.5L)
Diagnosis

Symptom Possible Cause Action
Starter does not run Charging failure Repair charging system
Battery Failure Replace Battery
Terminal connection failure Repair or replace terminal connector
and/or wiring harness
Starter switch failure Repair or replace starter switch
Starter failure Repair or replace starter

STARTING AND CHARGING SYSTEM (6VE1 3.5L) 6D3-5
Starter
Removal
1. Battery ground cable.
2. Disconnect left heated O
2 sensor connector.
3. Remove exhaust front left pipe.
4. Remove dust cover.
5. Disconnect starter wiring connector from terminals
“30" and “50".
6. Remove starter assembly mounting bolts on inside
and outside.
7. Remove starter assembly toward the bottom o
f
engine.



065RY00050
Legend
(1) Terminal "30"
(2) Terminal "50"
(3) Fixing Bolts
(4) Starter Assembly


Installation
1. Install starter assembly.
2. Install mounting bolts and tighten bolts to specified
torque.
Torque: 40 N




m (4.1 kg




m/30 lb ft)
3. Reconnect the connectors to terminals “30" and
“50" and tighten Terminals “30" to specified torque.
Torque: 9 N




m (0.9 kg




m/7 lb ft)
4. Install dust cover.





065RY00050
Legend
(1) Terminal "30"
(2) Terminal "50"
(3) Fixing Bolts
(4) Starter Assembly


5. Install exhaust front left pipe and tighten bolts and
nuts to specified torque(2).
Stud Nuts
Torque: 67 N




m (6.8 kg




m/49 lb ft)
Nuts
Torque: 43 N




m (4.4 kg




m/32 lb ft)
6. Connect heated O
2 sensor connector.
7. Reconnect the battery ground cable.

STARTING AND CHARGING SYSTEM (6VE1 3.5L) 6D3-11
Brush Spring
Use spring balancer to measure the spring setting force
when remove the spring from the brush.
Standard: 17.65–23.54 N (38.9–51.9 lb)
Limit: 11.77 N (25.9 lb)
Magnetic Switch
Temporarilly connect the magnetic switch between the
overrunning clutch and housing.
Perform the steps described below in 3 to 5 seconds.
1. Pull in test
Connect the ground (-) to terminal C and magnetic
switch body.
Verify that the pinion pulls out when the battery (+)
pole is connected to terminal 50.




065R100017
2. Hold in test
Observe that the pinion stays when the lead wire is
disconnected from terminal C.




065R100018

3. Return test
Connect the ground (-) to terminal 50 and magnetic
switch body.
Verify that the pinion pulls out when the battery (+)
pole is connected to terminal C and the pinion
pulls away when the lead wire is disconnected from
terminal 50.




065R100019
Field Coil
1. Check for continuity between the end of the field coil
and yoke body.
Replace the field coil, if there is continuity.





065RY00065

STARTING AND CHARGING SYSTEM (6VE1 3.5L) 6D3-15
Charging System
General Description
The IC integral regulator charging system and its main
components are connected as shown in illustration.
The regulator is a solid state type and it is mounted
along with the brush holder assembly inside the
generator installed on the rear end cover.
The generator does not require particular maintenance
such as voltage adjustment.
The rectifier connected to the stator coil has eigh
t
diodes to transform AC voltage into DC voltage.
This DC voltage is connected to the output terminal o
f
generator.

General On–Vehicle Inspection
The operating condition of charging system is indicated
by the charge warning lamp. The warning lamp comes
on when the starter switch is turned to “ON" position.
The charging system operates normally if the lamp
goes off when the engine starts.
If the warning lamp shows abnormality or i
f
undercharged or overcharged battery condition is
suspected, perform diagnosis by checking the charging
system as follows:
1. Check visually the belt and wiring connector.
2. With the engine stopped, turn the stator switch to
“ON" position and observe the warning lamp.
If lamp does not come on:
Disconnect wiring connector from generator, and
ground the terminal “L" on connector side.
If lamp comes on:
Repair or replace the generator.




F06RW009

6D3-16 STARTING AND CHARGING SYSTEM (6VE1 3.5L)
Generator
Removal
1. Disconnect battery ground cable.
2. Move drive belt tensioner to loose side using
wrench then remove drive belt (1).
3. Disconnect the wire from terminal “B" and
disconnect the connector (4).
4. Remove generator fixing bolt (3).
5. Remove generator assembly (2).





060RW002
Inspection
1. Disconnect the wiring connector from generator.
2. With the engine stopped, turn starter switch to “ON"
and connect a voltmeter between connecto
r
terminal L (2) and ground or between terminal IG (1)
and ground.




066RW001
If voltage is not present, the line between battery
and connector is disconnected and so requires
repair.
3. Reconnect the wiring connector to the generator,
run the engine at middle speed, and turn off all
electrical devices other than engine.
4. Measure battery voltage. If it exceeds 16V, repair o
r
replace the generator.
5. Connect an ammeter to output terminal o
f
generator, and measure output current under load
by turning on the other electrical devices (eg.,
headlights). At this time, the voltage must not be
less than 13V.
Installation
1. Install generator assembly to the position to be
installed.
2. Install generator assembly and tighten the fixing
bolts to the specified torque.
Torque:
M10 bolt: 52 N




m (5.3 kg




m/38 lb ft)
M8 bolt: 25 N




m (2.5 kg




m/18 lb ft)
3. Connect wiring harness connector and direc
t
terminal “B".
4. Move drive belt tensioner to loose side using
wrench, then install drive belt to normal position.
5. Reconnect battery ground cable.