EC160B-03

ELECTRI C BASIC BASIC 03 ELECTRIC

MAIN

Explanation of Wiring Diagrams

EC160B-03-01

Electric Wire(1)  Wire(1) 

EC160B-03-02

Electric Wire(2)  Wire(2) 

EC160B-03-03

Electric Wire(3)

EC160B-03-04

Connector General

EC160B-03-05

Connector Handling

EC160B-03-06

Connector View(1)

EC160B-03-07

Connector View(2)

EC160B-03-08

Resistance Measurement( Measurement(1) 1)  

EC160B-03-09

Resistance Measurement(2) Measurement(2)

EC160B-03-10

DC Voltage Measurement(1)

EC160B-03-11

DC Voltage Measurement(2)

EC160B-03-12

DC Current Measurement(1)

EC160B-03-13

DC Current Measurement(2)

EC160B-03-14

Diode Check Procedure(1)

EC160B-03-15

Diode Check Procedure(2)

EC160B-03-16

Various Connections

EC160B-03-17

Bad Connections Connections

EC160B-03-18

CLICK THE VOLVO-LOGO IN THE LOWER RIGHT CORNER

Explanation of Wiring Diagrams 9

3 1 SCH12

IS02.6

SCH00

2

SW3501 2

IS02.7

LA301

IM04.1

48

6

LA302 48

4 IS02.1

3

7

RE3501

LA303

IS02.2 1 48

6

LA304 48

5 8 1. Reference, cable has permanent connection to wiring diagram SCH12 2. Connector wih pin marking.(Connector IM04, pin 1) 3. Component (SW : switch, 3 : function group, 501 : running number) 4. Wire color(GN : green) 5. Wire number(not printed on the wire) 6. Voltage supply 7. Connection mark 8. Frame ground point 9. Diagram number

Electric Wire(1)

Stripe Color

Base Color

Y

= Yellow

Y/W

= Yellow/White

GN

= Green

GN/R

= Green/Red

BL

= Blue

BN/W

= Brown/White

GR

= Gray

BL/W

= Blue/White

W

= White

GN/W

= Green/White

BN

= Brown

BL/Y

= Blue/Yellow

OR

= Orange

BL/R

= Blue/Red

VO

= Violet

P

= Pink

SB

= Black

Conductor (Copper wires)

Base Color / Stripe Color

Electric Wire(2) BL/Y

      R       /       L       B

GN/Y

      R       /       L       B

GN/Y

Electric Wire(3)

Low Resistance

High Resistance

Low Resistance

High Resistance

P(power consumed at wire) = I Heat(generated at wire)

2

R

Power(consumed at wire)

Thick and Short wire can transmit More Current without heating

Connector General

MA51.1 Connector Number

MA51. 2

MA51.2

Abb.

Description

Abb.

Description

MA

Main wire harness

ME

MA to EN connection

EN

Engine wire hareness

MR

MA to RH connection

RH

Right hand side wire hareness

ML

MA to LH connection

LH

Left hand side wire hareness

MI

MA to IN connection

IN

Instrument wire hareness

MC

MA to CA connection

CA

Cabin wire hareness

MS

MA to SW connection

SW

Switch wire harenss

EM

MA to EL connection

EL

Electric box wir harness

MAE

Main wire harness ground

ENE

Engine wire harness ground

Connector Pin Number

Connector Handling Remove Clamp

Press Lock and Pull out

Align Arrows and Push In

Connector View(1)

Connector View(2)

Resistance Measurement(1) 1. Plug in multi-meter terminals to correct position.

point (if adjusting screw is installed). V.Hz.

mA

20A

4. Disconnect component from circuit.

resistance range. DC

mA

AC

200m

20 200

2

20020

200m

V mA

2

200 20A

200 20A

20M 2M

200 20

200K 20K

OHM

0

COM

2. Set multi-meter to the lowest

V

3. Contact the terminals and set zero ohm

o

C

2K

2000p 20 200n

200

 

KHz TEMP

Farad

Resistance Measurement(2) 5. Contact the terminals to measuring points. Do not touch the terminals or measuring points with finger or any conductive material.

6. If resistance is too large to measure, increase measuring range step by step. DC

V

1

mA

AC

200m

20 200

2

20020

V mA

200m 2

200 20A

200 20A

20M 2M

200 20

200K 20K

OHM

o

2K

2000p 20 200n

200

 

C

KHz TEMP

Farad

DC Voltage Measurement(1) 1. Plug in multi-meter terminals to

3. Leave component at connected condition.

correct position. V.Hz.

mA

20A

COM

2. Set multi-meter to the highest DC voltage range. DC

V mA

terminal and component terminal. AC

200m

20 200

2

20020

V mA

200m 2

200 20A

200 20A

20M 2M

200 20

200K 20K

OHM

o

2K

2000p 20 200n

200

 

4. Check and match polarity of multi-meter

C

KHz TEMP

Farad

DC Voltage Measurement(2) 5. Contact the terminals to measuring points. Do not touch the terminals or measuring points with finger or any conductive material.

6. If voltage is too small to measure, decrease measuring range step by step. DC

V

0.001

mA

AC

200m

20 200

2

20020

V mA

200m 2

200 20A

200 20A

20M 2M

200 20

200K 20K

OHM

o

2K

2000p 20 200n

200

 

C

KHz TEMP

Farad

DC Current Measurement(1) 1. Plug in multi-meter terminals to

3. Disconnect one wire to the component.

correct position. (Plug in plus terminal to Max. current position) V.Hz.

mA

20A

COM

4. Check and match polarity of multi-meter 2. Set multi-meter to same current   range. DC

V mA

AC

200m

20 200

2

20020

V mA

200m 2

200 20A

200 20A

20M 2M

200 20

200K 20K

OHM

o

C

2K

2000p 20 200n

200

 

KHz TEMP

Farad

terminal and component terminal.

DC Current Measurement(2) 5. Contact the terminals to measuring points. Do not touch the terminals or measuring points with finger or any conductive material. Current flow

6. If current is too small to measure, decrease measuring range step by step. DC

V

0.01

mA

V.Hz.

mA

AC

200m

20 200

2

20A

COM

20020

V mA

200m 2

200 20A

200 20A

20M 2M

200 20

200K 20K

OHM

o

C

2K

2000p 20 200n

200

 

KHz TEMP

Farad

Diode Check Procedure(1) 1. Plug in multi-meter terminals to ohm measuring position.

point. (Check if multi-meter is normal)

V.Hz.

mA

20A

ohm range. DC

mA

AC

200m

20 200

2

20020

200m

V mA

2

200 20A

200 20A

20M 2M

200 20

200K 20K

OHM

0

COM

2. Set multi-meter to 20K or similar

V

3. Contact the terminals and check zero ohm

o

2K

2000p 20 200n

200

 

C

KHz TEMP

Farad

4. Disconnect diode from circuit.

Diode Check Procedure(2) 5. Contact red terminal to triangle side pin and black terminal to bar side pin. Check if some kilo ohm value is displayed. (This value can be different according to measuring condition )

5.6 6. Contact red terminal to bar side pin and black terminal to triangle side pin. Check if above measurable value is displayed.

1

Various Connections

x A

x B

x C

x D

x E 5A

y

y

y

y

y

24V

x F

x G

y

y

x H y

Lamp

Condition

Remark

Vx

Vy

A

No

Both line connected to power.

24

24

B

Yes(bright)

Normal condition

24

0

C

No

No ground connection

24

24

D

Yes(dim)

Bad ground connection

24

12

E

No

No ground connection

24

24

F

Yes(dim)

Bad power connection

12

0

G

No

No power connection

0

0

H

No

Fuse burn.

0

0

Bad Connections Loosen connector

Broken pin

Rusted pin

Cut wire

Loosen screw Water condensed