Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Manual - part 1385

6D3–16

STARTING AND CHARGING SYSTEM (6VD1 3.2L)

150R100012

STARTING AND CHARGING SYSTEM (6VD1 3.2L)

6D3–17

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 diodes to
transform AC voltage into DC voltage.
This DC voltage is connected to the output terminal of
generator.

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General On–Vehicle Inspection

A basic wiring diagram is shown in the illustration. When
operating normally, the indicator bulb will come on when
the switch is turned on,     and will then go out when the
engine starts. If the indicator operates abnormally, or if
an undercharged or     overcharged battery condition
occurs, the following procedure may be used to
diagnose the charging system.     Remember that an
undercharged battery is often caused by accessories
being left on overnight,     or by a defective switch which
allows a bulb, such as a trunk or glove box light, to stay
on.

Observe the following procedure:

1. Visually check belt and wiring.

2. Go to step 5. for vehicles without charge indicator

light.

3. Switch on, engine stopped, light should be on. If not,

detach harness at generator, ground “L” terminal
lead.

a. Lamp lights, replace or repair generator.

b. Lamp dose not light, locate open circuit between

grounding lead and ignition switch. Bulb may be
open.

4. Switch on, engine running at moderate speed. Light

should be off. If not, detach wiring harness at
generator.

a. If light goes off, replace or repair generator.

b. If light stays on, check for grounded “L” terminal

wire in harness.

5. Battery undercharged or overcharged.

a. Detach wiring harness connector from

generator.

b. With switch on, engine not running connect

voltmeter from ground to “L” terminal in wiring
harness, and to “IG” terminal. If used. Wiring

6D3–18

STARTING AND CHARGING SYSTEM (6VD1 3.2L)

harness may connect to either “L” or “IG” or
both.

c.

Zero reading indicates open circuit between
terminal and battery. Connect as required.

d. Re-connect harness connector to generator, run

engine at moderate speed, with electrical
accessories turned off.

e. Measure voltage across battery. If above 16.0V,

replace or repair generator.

f.

Connect ammeter at generator output terminal.
Turn on accessories, load battery with carbon
pile to obtain maximum amperes output.
Maintain voltage at 13.0V or above.

1. If within 15 amperes of rated output,

generator is OK.

2. If not within 15 amperes of rated output,

replace or repair generator.

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).

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Inspection

1. Disconnect the wiring connector from generator.

2. With the engine stopped, turn starter switch to “on”

and connect a voltmeter between connector
terminal L (1) and ground or between terminal S (2)
and ground.

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If there is no voltage present, then perform
appropriate repair.

3. Reconnect the wiring connector to the generator,

run the engine at must indicate idle speed, and turn
off all electrical devices other than engine.

4. Measure battery voltage. If it exceeds 16V, repair or

replace the generator.

5. Connect an ammeter to output terminal of

generator, and measure output current under load
by turning on the other electrical devices (eg.,
headlights). At this time the amperes must not be
less than 15A and the voltage must not be less than
13V.

STARTING AND CHARGING SYSTEM (6VD1 3.2L)

6D3–19

Installation

1. Install generator assembly to the position.

2. Install generator assembly and tighten the fixing

bolts to the specified torque.

Torque:

M10 bolt: 41 N·m (30 Ib ft)

M8 bolt: 21 N·m (15 Ib ft)

3. Connect wiring harness connector and direct

terminal “B”.

4. Move drive belt tensioner to loose side using

wrench, then install drive belt to normal position.

5. Reconnect battery ground cable.

Disassembled View

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EndOFCallout

Legend

(1) Pulley Nut
(2) Pulley
(3) Front Cover Assembly
(4) Rotor Assembly
(5) Stator Assembly
(6) Through Bolt

(7) Nut
(8) Terminal Insulator
(9) Rear Cover Assembly

(10) Rectifier

(11) Brush Holder Assembly

(12) Regulator Assembly