Service BulletinVolvo Trucks North America, Inc.Greensboro, NC USA

Date Group No. Page

11.2002 392 04 1(7)

Trucks

RadioVN, VHD VERSION2

From build date 11.2002

Radio, Design and Specifications

T3015831

ContentsSpecifications

“Radio, Signal Descriptions” page 2

“Radio, Components” page 2

Design and function

“Radio” page 7

PV776-TSP177206 USA12167

Page 2

Specifications

Radio, Components

Impedance, dash and door speakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ≈ 8

Impedance, dash tweeters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ≈ 4

Impedance, rear speakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ≈ 16

Impedance, subwoofer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ≈ 4 (each coil)

Radio, Signal DescriptionsNOTE: All wires are not used in all models of radio. The signal specification chartshows the maximum number of connections.

W3005177

Note: “C” is comprised of two separate connectors(one yellow and one blue) on the harness side (see“Component A07, connector C” page 6 for details).

• Radio connected.

• Ignition key in the drive position.

• Radio activated.

• Measuring voltage.

V = direct current voltage.

Pin, Back ofRadio

Wire Color Signal type Measurement points Nominal value Other

A1 Not used

A2 Not used

A3 Orange Background light-ing, parking lamps

A3 - A8 V ≈ Vbat Light switch inthe parkinglamp position.

A4 Red Power supply, radioposition

A4 - A8 V ≈ 10-16 V Ignition key inposition R andI

A5 Dk. Blue Power antenna con-trol

A5 - A8 V ≈ 12 V Radio acti-vated (max0.3 A)

A6 Orange/White

Background light-ing, rheostat

A6 - A8 V ≈ 2-16 V Pulse widthmodulated(PWM) signal

A7 Yellow Voltage supply,memory

A7 - A8 V ≈ 10-16 V Ignition key inoff position

Volvo Trucks North America, Inc. Date Group No. Page

Service Bulletin 11.2002 392 04 3(7)

Pin, Back ofRadio

Wire Color Signal type Measurement points Nominal value Other

A8 Black Ground connection A8 - ground V ≈ 0 V

B1 Violet Speaker right rear(+)

B1 - A8 V ≈ 6-8 V

B2 Violet/Black

Speaker right rear(-)

B2 - A8 V ≈ 6-8 V

B3 Gray Speaker right front(+)

B3 - A8 V ≈ 6-8 V

B4 Gray /Black Speaker right front(-)

B4 - A8 V ≈ 6-8 V

B5 White Speaker left front(+)

B5 - A8 V ≈ 6-8 V

B6 White/Black

Speaker left front (-) B6 - A8 V ≈ 6-8 V

B7 Green Speaker left rear (+) B7 - A8 V ≈ 6-8 V

B8 Green/Black

Speaker left rear (-) B8 - A8 V ≈ 6-8 V

C1 408B J1939+ Controldata link

C1 - A8 V ≈ 2-5 V

C2 Not used

C3 Not used

C4 Not used

C5 409B J1939- Control datalink

C5 - A8 V ≈ 0-3 V

C6 Not used

C7 Not used

C8 Not used

C9 Not used

C10 Not used

C11 Not used

C12 Not used

C13 Red Low level input, CDchanger left (+)

Not measurable

C14 Green Data link, CD-changer

C14 - A8 V ≈ 13 V

C15 Orange Supply voltage CD-changer

C15 - A8 V ≈ 14 V

C16 White Low level input, CDchanger right (+)

Not measurable

C17 shield Shield, CD changerwiring

C17 - earth V ≈ 0 V

C18 Black/White

Ground terminal,CD-changer

C18 - earth V ≈ 0 V

Page 4

Pin, Back ofRadio

Wire Color Signal type Measurement points Nominal value Other

C19 Black Audio common C19 - C18 V ≈ 0 V

C20 Not used

Volvo Trucks North America, Inc. Date Group No. Page

Service Bulletin 11.2002 392 04 5(7)

Radio, Connector Details

Component A07, connector A/B

W3005581

A/B, Back of Radio Connector

NOTE: All wires are not used in all models of radio.

Pin, A/B Wire Color

A1 Not used

A2 Not used

A3 Orange

A4 Red

A5 Dk. Blue

A6 Orange/White

A7 Yellow

A8 Black

B1 Violet

B2 Violet/Black

B3 Dk. Gray

B4 Gray/Black

B5 White

B6 White/Black

B7 Dk. Green

B8 Green/Black

Page 6

Component A07, connector CC is two connectors (one yellow and one blue) on theharness side.

W3005180

C, Yellow, Data Link: Connects to Steering WheelModule (SWM)

NOTE: All wires are not used in all models of radio.

Pin, C(Yellow)

CircuitNumber

Signal type

C1 408B J1939+ Control data link(CAN3) to Steeringwheel Module

C2 Not used

C3 Not used

C4 Not used

C5 409B J1939- Control data link(CAN3) to SteeringWheel Module

C6 Not used

W3005179

C, Blue: Connects to CD Changer Jumper

NOTE: All wires are not used in all models of radio.

Pin, C(Blue)

Wire Color Signal type

C13 Red Low level input, CDchanger left (+)

C14 Green Data link, CD-changer

C15 Orange Supply voltage CD-changer

C16 White Low level input, CDchanger right (+)

C17 shield Shield, CD changerwiring

C18 Black/White Ground terminal, CD-changer

C19 Black Audio common

C20 Not used

Volvo Trucks North America, Inc. Date Group No. Page

Service Bulletin 11.2002 392 04 7(7)

Design and FunctionRadio

There are four versions of the radio. All except one can control a CD changer and areable too communicate with other systems via the SAE J1939-3 control data link. Referto the operator’s manual for more information about the functions of the radio.

The radio, the telephone and the steering wheel buttons are connected to the instru-ment cluster by the J1939 control data link. This is a ”data network” (SAE J1939-3), inwhich the communication with other systems occurs via the instrument panel. The ra-dio only transmits display information to the instrument cluster (station information forexample). Other systems transmit information which the radio uses for other functions.This information ”is channelled” through the instrument cluster.

If the supply voltage to the radio has been interrupted the radio checks that it is installedin the correct vehicle by comparing the VIN. If the VIN does not match the user is re-quired to enter the Anti-theft code. If the wrong code is entered 3 times in a row, theradio must have battery and ignition power on, uninterrupted, for 1 hour before 3 newattempts are possible (also note: no radio buttons can be pressed during this 1 hour.)

See the following for more information:

Specifications

“Radio, Signal Descriptions” page 2

“Radio, Components” page 2

“Radio, Connector Details” page 5

Special functionsThe radio has a number of functions where the radio co-operates with other systems via SAE J1939–3. The mostbasic radio (AUD-BAS) has only a few functions anddoes not communicate on the J1939-3.

• Displaying information in the instrument display. (NotAUD-BAS)

• Control via steering wheel buttons. (Not AUD-BAS)

• Speed– and engine speed-dependent volume. (NotAUD-BAS)

• Control of the backlighting using the rheostat for thedash lighting.

Function Connection

Background lighting A6

Background lighting, parking lamps A3

Muting during telephone conversa-tions (MUTE) C4

Speed dependent volume A1

Engine speed dependent volume -