07_Electrical system.pdf

CONTENTS

CHARGING SYSTEM ................................................. 7- 1

DESCRIPTION ....................................................... 7- 1

INSPECTION ......................................................... 7- 3

IGNITION SYSTEM ................................................... 7- 5

DESCRIPTION ....................................................... 7- 5

INSPECTION ......................................................... 7- 6

STARTER SYSTEM ................................................... 7- 10

DESCRIPTION ....................................................... 7- 10

REMOVAL AND DISASSEMBLY ................................. 7- 10

INSPECTION ......................................................... 7- 11

REASSEMBLY ....................................................... 7- 12

STARTER REU Y INSPECTION .................................. 7- 13

SIDE-S7AND/lGNl7lON INTERLOCK SYSTEM .................. 7- 13

DESCRIPTION ....................................................... 7- 13

INSPECTION ......................................................... 7- 15

COMBINA T/ON METER .............................................. 7- 16

REMOVAL AND DISASSEMBLY ................................. 7- 16

INSPECTION ........................................................ 7-17

LAMPS .................................................................. 7- 18

HEXDLIGHT ......................................................... 7-18

TAIL/ BRAKE LIGHT ................................................ 7- 18

TURN SIGNAL LIGHT .............................................. 7- 19

SWITCHES ............................................................. 7- 19

RELA Y ................................................................... 7-20

STARTER RELA Y ................................................... 7-20

SIDE-S7A ND REU Y ............................................... 7-20

TURN SIGNAL RELA Y ............................................. 7-20

BA 7TERY ................................................................ 7-2 1

SPECIFICA TIONS .................................................. 7-2 1

INITIAL CHARGING ................................................ 7-2 1

SERVICING .......................................................... 7-2 1

RECHARGING OPERA T/ON BASED ON S.G. READING ...... 7-22

SERVICE LIFE ........................................................

7-23

7-1 ELECTRICAL SYSTEM

CHARGING SYSTEM

DESCRIPTION

The circuit of the charging system is indicated in the figure, which is composed of an AC generator, regu-

lator/rectifier unit and battery.

The AC current generated from the AC generator is rectified by the rectifier and is turned into DC current,

then it charges the battery.

Regulator/Rectifier

-1-1-1-1-----1--1-11

AC generator

Ignition switch

I 1 1 T 1 T

T 7 I

TOW

SCR

j 1

I-0

-------__-----

U.S.A. model only i

-_--A

FUNCTION OF REGULATOR

While the engine r/min is low and the generated voltage of the AC generator is lower than the adjusted

voltage of regulator, the regulator does not function. However, the generated current charges the battery

directly at this time.

Regulator/Rectifier

r 1-a-1-wmm1111---we--

Ignition switch

AC generator

I b

SCR

I T

111

_-------(

.S.A. model only i

,-------

ELECTRICAL

SYSTEM 7-2

When the engine r/min becomes higher, the generated voltage of the AC generator also becomes higher and

the voltage between the battery terminals becomes high accordingly. When it reaches the adjusted voltage

of the I.C. (Integrated Circuit) and it is turned “ON”, a signal will be sent to the SCR (Thyristor) gate

probe and the SCR will be turned “ON”.

Then, the SCR becomes conductive in the direction from point @ to point @I. At this time, the current

generated from the AC generator gets through the SCR without charging the battery and returns to AC

generator again. At the end of this state, since the AC current generated from AC generator flows to point

@ , the reverse current tends to flow to SCR. Then, the circuit of SCR turns to the OFF mode and begins

to charge the battery again. Thus these repetitions maintain charging voltage and current to the battery

constant and protect it from overcharging.

Regulator/Rectifier

---------1---1-11---

Ignition switch

AC generator

r a---_-----

U.S.A. model only

7-3 ELECTRICAL SYSTEM

INSPECTION

CHARGING OUTPUT CHECK

Remove the seat.

Start the engine and keep it running at 5 000 r/min with light-

ing switch turned ON and dimmer switch turned HI position.

Using the pocket tester, measure the DC voltage between the

battery terminals, 0 and 0 .

If the tester reads under 13.5V or over 15.5V, check the AC

generator no-load performance and regulator/rectifier.

NOTE:

When making this test, be sure that the battery is fully-charged

condition.

3egulatorf

lg. switch

3ectifier

I--

STD charging output : 13.5 - 15.5V (DC) at 5 000 r/min

09900-25002 : Pocket tester

AC GENERATOR NO-LOAD PERFORMANCE

Remove the seat and lift the backside of fuel tank.

Disconnect the AC generator lead wire coupler.

Start the engine and keep it running at 5 000 r/min.

Using the pocket tester, measure the AC voltage between the

three lead wires.

If the tester reads under the specified voltage, the AC genera-

tor is faulty.

For U.S.A. model

1 For the other models

STD no-load performance: More than 65V (AC) at 5000

r/min (When engine cold.)

For the other models

STD no-load performance: More than 75V (AC) at 5000

r/min (When engine cold.)

Y: Yellow

For U.S.A. model

09900-25002 : Pocket tester

AC GENERATOR CONTINUITY CHECK

Using the pocket tester, check the continuity between the

three lead wires.

Check that there is no continuity between the lead wires and

ground.

@ii=+

Y: Yellow

09900-25002 : Pocket tester

For the other models

NOTE:

When making above test, it is not necessary to remove the AC

generator.

Y: Yellow

ELECTRICAL

SYSTEM 7-4

REGULATOR/RECTIFIER

Remove the seat and lift the backside of fuel tank.

Using the pocket tester (x 1 kn range), measure the resist-

ance between the lead wires in the following table.

If the resistance checked is incorrect, replace the regulator/

rectifier.

09900-25002 : Pocket tester

Unit: Approx. kR

@ Probe of tester to:

O/B

B/W

3.0

100

. I

O/B

B/W

3.0

7.5

Y: Yellow, R: Red, O/B: Orange with Black tracer, B/W: Black with White tracer, m : Infinity

NOTE:

As transistors, capacitors, Zener diodes, etc. are used inside this R

O/B

regulator/rectifier, the resistance values will differ when an

ohmmeter other than the SUZUKI pocket tester is used.

B/W

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