1982 VOLVO 940 Service Repair Manual

70019401960 Specifications
Section 3 Electrical System
Group 35 Lighting
Bulbs
.~<
~ w W ~ ~ ffi 8 W
j At t ~ 'I lkU
.. W 2x4,6d W 2.1x9.5d BAY 15d VS 7 SV 8,5 BA9s BA 155 BA 155 GE B81 9004 PK 225 P 43t·38
( Rating Socket Qty
USA
Headlight ................... ........... 60/55W P
45t-38 (H4) 2
Headlight
USA, CON, outer .............. 35/35W "Sealed Beam" H4656 2
inner
.............. 50W "Sealed Beam" H4651 2
Headlight 760 1988--/780
USA, CON ...... 50/70W "Semi-sealed" 9004/HB1
2
Parking/day running
lights
(certain markets) 21/5W BAY 15d 2
Parking
lights (other markets) ............ 5W (4 cp) BA 15s 2
Parking lights, 780
...................... 4W BA 9s 2
Parking
lights, 780 USA/Canada .......... 4W W 2.1 x9.5d 2
Turn signals, front
...................... 21 W (32 cp) BA
15s 2
Turn signals, front USA/Canada 24/2.2
cp
BAY 15d 1157
NA 2
Turn signals,
side
(certain markets) .
...................... 5W W 2.1 x9.5d 2
Turn signals, rear ..
..................... 21 W (32 cp) BA
15s 1156 2
(4*)
Fog/spot
lights ....... .................. 55W PK 22s (H3) 2
Foglight 760 1988--
USA, CON ........... 27W GE 881 2 "' Tail lights .............................. 5W (4 cp) BA
15s 2
(4*) ' .... ,
Brake lights ............................ 21 W (32 cp) BA 15s 2 :':':1
Brake lights/tail
lights ................... 21/5 W, (3213 cp) BAY 15d 2 ':.:.: High-level brake lights 1986 .............. 20W BA 9s
High-level brake lights 1987-..........
.. 21W BA 15s
Rear foglight (brake
light) ................ 21 W (32 cp) BA
15s 2
Reversing (back-up)
lights ............... 21 W (32 cp) BA
15s 2
Side marker light, rear USA, CON ........ 4W BA
9s 2
Side marker
lights, rear 780
USA/Canada 4
cp
BA 15s 2
Numberplate
light ....................... 4W BA 9s 2
Courtesy lighting
....................... 10W SV 8.5
Reading
light, front. ..................... 5W W 2 .1 x 9.5d 2
Reading
l ight, rear ...................... 5W W 2.1 x 9.5d 2
Vanity mirror
light ....................... 3W SV 7 2
Glove compartment light. ................ 2W BA 9s
Door
open warning lights ................ 3W W 2.1 x 9.5d 4
Engine bay/boot (trunk)
light ............. 10W SV 8 .5 1
Ooor instep light, 780
................... 5W SV 8.5 2
Instrum
ent panel lighting
Indicator and warning lights, VDO ........ 1.2W ** 16
Indicator and warning lights, Yazaki ....... 1.2W W 2x4.6d 16
Lighting ............................... 3W W 2.1 x9.5d 3
Control and panel lighting ......
..... .... 1.2W W 2x4.6d 12
• 780. H Inc . holder. see fig . 127
)

7001940;'960 Specifications
Section 3 Electrical System
Group 37 Fuses
1982-1983
Fu se Circuits protected
num -
ber Fuse
rating
30 + feed (c ir cu its alw ays live, ig nition off)
1 * Fuel pumps E-engines (fuel injection
B23ET) ........................... ...... 25A (via fuel pump relay)
2* Four-way hazard warning lamps ........ . 25A Headlight flasher (via fuses 17 and 18) Central locking system
3 Extra
lights (spot/fog lamps in air dam/
4
5
front spoiler) ............................ 15A
Brake lights ............. ................ 15A
Clock .......................... ......... 15A Vanity mirror lamp
Glove compartment lamp Engine and luggage compartment lamps
Interior lamp
Power aerial Door warning lamps
Radio
15 + feed (ignition II & III)
(fu ses 6 a 7 via relay)
6 Electric cooling fan ...................... 25A
7 Power windows .................. ....... 30A
8 Direction indicators ...................... 15A Constant idling (E & F engines) Solenoid valve (carb)
Hot start valve (carb)
Overdrive relay
Relay glow plugs , Diesel
9 Electrically heated rear window. . . . . . . . .. 30 A
Power sun roof
10 Instrumentation ...................... , .. 25A Reversing (back-up) lights Heated front seats
Seat belt reminder Spade terminals + 15 in central electrical
unit:
-Relay fuel pump -Relay power windows/electric cooling
fan
-Oil level sensor Delay valve AC Bulb failure warning
Seat belt reminder (USA & Canada)
11 Day running lights ...................... 25A Cruise control
128
Heater fan, CU low speed
ACC
1982-1983
Fuse Circuits protected
num -
ber
X-feed (ign ition I & II)
Fuse rating
12 Cigar lighter ... ......................... 15A Radio
Power door mirrors
Power seats
13 Horn ................................ ... 25A Windshield wash/wipe (intermittent relay)
Headlamp wash/wire
14 Heater fan, other speeds. . . . . . . . . . . . . . . .. 30 A
15 Tank pump E and F-engines via fuse number 1 .............................. . (only in circuit when starting and when en­gine is running)
Ma in and dipped beams
16 Rear fog lamps ......... .................
17 Indicator lamp, main beam .............. Main beam, left
18 Main beam, right. ....................... Relay, spot lights
19 Dipped beam, left .......................
20 Dipped beam, right ......................
Feed from light switch (58 )
15A
15A
15A
15A
15A
15A
21 Instrument and control lighting, front ..... 15A Tail and parking lights, left Number (license) plate light Light warning buzzer
22 Seat belt lock and ashtray light, rear ...... 15A Lighting, switches on trans tunnel
Tail and parking lights, right Relay, fog lamp (Sweden)
* Applies to 1983 models.
1982 models:
Four-way hazard warning lamps ......... 25A Headlight flasher (via fuses 17 and 18) Central locking system
2
Fuel pumps E-engine .................... 25A (via fuel pump relay)

(

1984
Fuse Circuits protected Fuse
num-rating
ber
30 + feed (circuit s alw ays live)
Fuel pumps E-engines + CI system ....... (via fuel pump relay)
Fuel i njection ((B 23 ET)
2 Four-way
hazard
warning lamps ......... Headlight flasher (via fuses 17 and 18)
ABS
3 Extra lights (spot/fog lamps in
air dam/ front spoiler) . ................ ... .. ......
Rear fog lamp relay
4 Brake lights .....
.. .............•........
5 C lock ....... ............. ............. ..
Vanity mirror lamp Glove compartment lamp Engine and luggage compartment lamps
Interior lamp Power aerial Door warning lamps
Radio
15+I-feed via relay (ignition II)
(fuses 6&7 via relay)
6 Electric cooling fan ................ ...... Fasten seat belt light Heated seats
7
p()\J\; er windows ........... . •.... ........
8 Day
running
lights ..... .......... ....... Bulb failure sensor Relay, power windows + cooling fan
9 Heated
rear
window ................. ....
Power sun roof Air conditioning
15+R-feed (ignition II & III)
10 Instrumentation ........................ .
Reversing (back-up) lights Ignition setting Cruise control
Spade terminals + 15 in central electrical
unit: -Oil level sensor
-Seat belt reminder (USA) -Exhaust gas temp sensor
-Relay, temp contro lled ign. advance)
-Converter (ABS)
25A
25A
15A
15A
15A
25A
30A
15A
30A
15A (25A)
11 Direction indicators.. .. .... .. . .... .. ..... 15A Overdrive relay (25 A) Constant idle speed system Glow plug relay Hot spot relay Warm start-valve (carb. engines)
70019401960 Specifications
Section
3 Electrical System
1984
Fuse C ircuit s protected Fuse
num-rating
ber
X-feed (ignition I & II)
12 Cigar lighter ...... ..............•....... 15A
Radio
Power door mirrors Power driver's seat
13 Horn ...... ........... .. ................ 25A
Windsh ield wash/wipe (interm ittent relay)
Headlamp wash/wipe
14 Fan motor .................. ......... ... 30A
Air conditioning
15 Tank pump E and F-engines via fuse num-ber 1 ...... ...................... ....... 15A
(only in circuit when starting and when en-
gine is running)
Main and dipped beams
16 Rear fog lamps (UK + S) ................ 15A
Headlamp cut-out
17 Indicator lamp, main beam .............. 15A
Main beam , left
18 Main beam, right .......•... ............. 15A IN
Relay, spot lights "I
19 Dipped beam, left ...... ................. 15A IIII( II.
20 D ipped beam, right ...........•.......... 15A "I II. II
Feed from light switch (58)
21 Instrument and control lighting, front ..... 15A
Tail and parking lights, left Number (license) plate light
22 Seat belt lock and ashtray light, rear ...... 15A
Panel light, auto selector lever Lighting, switches on trans tunnel Tail and parking lights, right Relay, auxiliary lamps
129

70019401960 Specifications
Section
3 E lectrical System
760 1985-1987 760 1985-1987
740 1985-1988 740 1985-1988
Fuse C ircuit s protected Fuse Fuse Circuits protected
Fuse nurn- r
ating nurn-rating ber ber
Fuel pumps
E-engines & CI system ....... 25A 12 Reversing (back-up) lights ............... 15A
(via fuel pump relay) Indicator lamp, low oil level Fuel injection (B 200 ET, B 230 ET) Overdrive
ETC Ignition advance
2 Hazard
warning
lights ................... 25A Cruise control
Headlight flash
(via number .17 & 18) ABS
Central lock
13 Fuel valve, diesel ........................ 15A ABS CIS
3 Relay, auxiliary lights .................... 15A Glow plugs, diesel
(spot/fog in front spoiler) Automatic choke
Relay , rear fog lights 14 Power door mirrors ..................... 15A
4 Brake lights .
............................ 15A Cigar lighter
Gear shift indicator (USA & CDN) Radio
5
Clock ................................... 15A Tailgate wiper
Vanity mirror light 15 Horn ..... ............................. . 25A
Glove compartment light Windscreen wiper
Engine compartrTJent and boot (trunk) light Headlight wash/wipe
Courtesy lighting 16 Heater fan .............................. 30A Radio AC Power aerial 17 Main beams, left ........................ 15A Door -open warning lamps 18 Main beams, right ....................... 15A 6 Heated
front seats .......... ........ 30 A (15A) Spot
lamps 7 Electric cooling fan ................. 25 A (30A) 19 Dipped beam, left ....................... 15A 8 Power windows ......................... 30A 20 Dipped
beam, right ...................... 15A 9 Direction
indicators ...................... 15A 21 Instrument and panel lighting ............ 15A Fasten seat belt light Tail lights & parking lights, left Heated front seats Numberplate lighting Power windows 22 Seat belt light & ashtray light, rear ....... 15A AC Selector panel light, automatic trans. Electric cooling fan
Lighting, trans. tunnel switches 10 Heated rear window ..................... 30A Tail lights & parking lights, right
Power sun roof Relay , auxiliary lights Power door mirrors 23 Power seats ............................. 15A 11 Tank pump ............................. 15A Day running lights 198B-Heated Lambda-sond 24 Supplementary restraint system (air bag). 30A
25 Day running lights ................... ... 15A Rear fog lights (USA & CDN) Dim/Dip (UK)
26 Power driver's seat ...................... 30A
130

70019401960 Specifications
Section
3 Electrical System
740 1989-1990 740 1989-1990
Fu se Circuit
s prot ect ed F
u se F
u se
Circuit s protected
Fu se
nurn - r
a ting nurn
-
rating
ber b
er
Fuel pumps, injection engines ........... 25A 14 Power door mirrors ..................... 15A
( Relay , Motronic, LH-Jetronic Cigar lighter
2 Hazard
warning lights
................... 25A Radio
Headlight
flash (via number 17 & 18) Tailgate wiper, interval relay
Central locking 15 Horn ..... .......................... .. .. 25A
3 Relay , auxiliary li ghts ............. ....... 15A Windscreen wipers
Relay, rear foglight Headlight wipers
4 Brake
lights
...................... ....... 15A 16 Heater fan .............................. 15A
Gear shift indicator 17 High beam , left ........... .............. 15A
5 Clock ................................ ... 15A Indi cator lamp. high beam
Vanity
mirror 18 High beam, right ...................... .. 15A Glove compartment light Relay, aux . lights
Engine/boot lights
Foglights
Courtesy lighting
19 Low beam, left ................. ......... 15A Radio Foglights Power aerial 20 Low beam, right ................. ....... 15A Door -open warning lamps
6 Heated front seats
(1989) ................ 30A 21 Parking lights, left front & back ........... 15A
ECC Number plate lighting
7 Electric
cooling fan (1989)
............... 25A Instrument & control lighting
22 Parking lights, right front & back ......... 15A fn' 8 Power windows .
................... ..... 30A Lighting for seat belt locks & ashtray, rear III III 9 Direction
indicators ...................... 15A Auto.trans panel light III III AC,ACC 23 Day running lights (1989) ................ 15A '111 Seat belt reminder (USA/CDN) III Heated front seats (1990) ·111 Power windows/electric cooling fan III
Heater fan 24 Spare (SRS) .............................
Power front seats 25 DIM-DiP .. ..............•............... 15A
Hot start valve 26 Radio , amplifier ............... .......... 30A
10 Heated rear window ................. .... 30A Power sunroof
Power door mirrors
11 Fuel tank pump . .. ............. ......... 15A Heated Lambdasond
12 Reversing (back-up) lights ..... .... ...... 15A Overdrive relay
Spade connec tors (+15), central electrical
unit Exhaust gas temp. sensor
Cruise control
13 Fuel valve, diesel ..................... ... 15A Glow plugs, diesel • Charge pressure limiter, Turbodiesel
Hot spot
Fuel cut-off valve
Idle valve Idle advance PTC resistor
131

70019401960 Specifications
Section 3 Electrical System
760 1988-19 90
,----------BL-Y ---------,
I 11/3 4 GR-R ~ ~ 1
: 3 -+~---'----'-<>e+-q=-OA-HlCg~:~ ~:~~--l '3M ~ •
. ~
BL- Y II/II 11/2 4
3/2:10
4/9:3
5/12:2
7/1: 1
3/2:3
3/2:
13
4/9:5 5/3:3
Fus e Circuit
protected
Left parking light
Numberplate lights
2 Right
parking light
3 Left
main beam
4 Right
main beam
5
SRS test point
6 Left
dipped beam
7 Right
dipped beam
8
Foglight, front
9
Foglight, rear
10
Instrument and control
lighting
11 Revers ing (back -up) light
Turn signals
Cruise control
12 DIMIDIP
13 Heated rear window
Heated door mirrors
132
BL- R OR
3/2 : 12
GN-5 B -3/3:2
GN-5 B -3/3:4
6/31
pf-2/13:2
19/4
15/7
F u se Circuit
protected
14 1 frcircuit in relay box
-
bulb failure sensor, rear
- exhaust temperature
sensor
- overdrive
- power windows
- power sunroof
- fasten seat
belt reminder
16 Spare
17 Spare
18 Radio
19 ECC
Power door mirrors
Tailgate wiper
Power seats
Cigar
lighter
20 Horn
Windscreen wipers
Headlight wipers
21 ETC
Glow plugs, diesel
CIS
22 Spare
A 100)
1/1 Battery
211 Main headlight relay
2111 Electric cooling fan, relay
2113 Motronic, LH-Jetronic, relay
3/1 Ignition switch
3/2 Light switch
3/3 Mainldipped beam switch
4/9 SRS crash sensor
5/3 3-pole combined instrument
connection
5/12 12 -pole combined instrument
connection
6/31 Fuel pump
7/1 Bulb failure sensor, rear
11/1 -35 Fuses
15/1 Positive terminal
15/3 3G-circuit in fusebox
15/7 Ground connection via door switch
19/4 Clock
A Connector, left A-post
(Connector, right A-post, B 280 ElF)
Fuse
Circuit protected
23 Spare
24 Spare
25 Hazard warning lights
Central locking
26 3G-circuit in fusebox
-
clock
- courtesy lighting
- door warning lights
27 Brake lights
28 ECC heater fan
ECC
29 Power aerial
Towing bracket lights
30 Tank
pump
Lambdasond
31 Fuel injection
Main
fuel pump
32 Amplifier, radio
33 Radio
34
Power windows
Power sunroof
35 Heated seats
Power seats

(
780 1988
Fu se Circuit protected
No.
Rating
1 Main fuel pump ........................... 25 A
2
Central locking, system, hazard
warning
lights, rear fog lamps ................ 25 A
3 Dipped beams, rear
foglamps ............... 15 A
4 Brake
lights .................. ............. 15 A
5
Glove compartment lighting, clock, .......... 15 A
radio, engine compartment
lighting,
interior lighting, boot lighting,
electric aerial,
door courtesy
lights, vanity mirror
6
Electrically-heated front seats ............... 30 A
7
Electronic climate control (ECC) ............. 30 A
8
Electric window winders .................... 30 A
9
Seat belt reminder , direction ................ 15 A
indicators, air conditioning ,
electrically-heated front seats,
electric window winders
10 Electrically-heated rear window, ............. 30 A
electrically -heated rear-view
mirrors,
electric sun roof
11 Fuel pump (tank pi.Jmp), .................... 15 A
electrically-heated oxygen sensor
(Lambdasond)
(B 280 F)
12 Reversing lights, cruise control .. ............ 15 A
ignition on, automatic
transmission disengagement
13 Automatic idling controls ................... 15 A
70019401960 Specifications
Section
3 Electrical System
780 1988
Fu se Circuit protected
No. Rating
14 Power rear-view mirrors, .................... 15 A
cigarette
lighter, radio, heater fan,
air conditioning
15 Horn, windscreen wipers, windscreen ........ 25A
washers
16
17
LH main beam ............................ 15A
18 RH main beam , supplementary main beam ... 15 A
19 LH dipped beam ............. ............. 15A
20 RH dipped beam .......................... 15 A
21 LH parking lights, front and rear, ............ 15 A
number
plate light. Illumination of
ashtray, heater
controls, rear window
heater switch,
electric sunroof switch.
Illumination of instruments and
switches to
left of steering wheel
22 Illumination of seat belt locks ............... 15 A
RH parking lights, front and rear.
Illumination of storage pocket between
front seats.
Supplementary main beams .
23 Relay, power seats ................ .... .... 15 A
24 Power passenger seat .................. ... 30 A
25 Rear fog lamps (USA/CON) ................. 15 A
26 Power driver's seat ................... .. .. . 30 A
N.B. The system also includes a 10 A fuse for the ABS
(anti-lock
braking system) function. This is incorporated in
the transient surge protector at the pedal mounting.
133
·,f' "'I .", '" .",
'" .",
'" .",

70019401960 Specifications
Section
3 Electrical System
780 1989-1990
Fuse Circuit protected
No. Rating
1
2
3
4
5
6 7
8
9
10
11
12
13
134 Main
fuel pump ........
. .................. 25 A
Central lock, hazard warning lights, main
beam
flash ....... ........................ 25 A
Foglights, front & rear ...................... 15 A
Brake
lights, power boot (trunk) release ...... 15 A
Glove box light, clock, radio engine compo
light, courtesy light, boot light, power radio,
door open warning
lights, vanity mirror light,
door instep light, central lock relay ........... 15 A
ECC
..................................... 30A
ECC heater fan
Heated front seats
......................... 30 A
Power windows
............................ 30A
Fasten seat belt reminder , turn signals,
heated front seats, power windows .......... 15 A
Heated rear window, heated door mirrors,
power sunroof
.............. ............... 30 A
Fuel tank pump, heated Lambdasond
(B 280 F, B 230 FT) ......................... 15 A
Reversing (back-up)
lights, cruise control,
15-circuit card in central electrical unit,
overdrive
.......... ....................... 15 A
Glow plugs (diesel), fuel valve (diesel),
boost pressure limiter (turbodiesel) , electric
cooling
fan ................................ 15A
780 1989-1991
Fuse Circuit protected
No.
14 Power door mirrors, cigar lighter,
radio, reading lamps (rear), ECC, power fuel
Rating
tank flap release .......................... 15 A
15 Horn, windscreen wash/wipe, headlight
wiper, power front seats .... ................ 25 A
16
Amplifier , front ............................ 15 A
17 Main beam
(left), indicator lamp main beam .. 15 A
18 Main beam (right), fog
light. ................. 15 A
19 Dipped beam,
left ......................... 15 A
20 Dipped beam, right .
....................... 15 A
21 Parking lights (left), front & rear,
numberplate light, lighting for: ashtray
(front), heater
control panel switch, heated
rear window switch, power sunroof switch,
instrument
lighting & switches to left of
steering
wheel ...... ...................... 15 A
22 Parking
lights (right), front & rear
Relay, front & rear foglights, auto.
trans
selector panel light, lighting for:
heated front seat switches, storage box
between front seats, rear ashtray
........... 15 A
23
Relay, power front seats (1989)
Amplifier, rear ......................... 15 A (25)
24 Power driver seat
.......................... 30 A
25 Rear
foglight (USA/CON) ................... 15 A
26 Power passenger seat
..................... 30 A
Additional fuses
ABS: one 10 A fuse incorporated in the transient surge pro­
tector at the
pedal mounting
Radio
amplifier (front & rear); two 30 A fuses next to battery
(not
Italy)
B 230 FT high output: one 10 A fuse mounted on left sus­
pension tower