Electrical component locations

FUSES, RELAYS AND CONTROL MODULES

The fuses, relays and control modules are located in various locations throughout the vehicle. Refer to the component location photos and tables in this repair group for electrical component locations.

Fuse positions

♦ Replace fuses with those of the same rating. Installing a fuse with higher rating can lead to circuit failure and may also start a fire.

• Relay/fuse positions vary by model and equipment.

Fuses no. 1 -21 and are mounted in the front fuse/relay panel located in the luggage compartment. There are additional fuses in the engine compartment fuse/relay panel. The foot-well blower fans behind the left and right kick panels are fused separately and the fuse holders are installed behind the kick panels as well.

Comprehensive lists of fuse positions for all years and models are given in Table c through Table g.

Relays and control modules

The luggage compartment and the engine compartment fuse/relay panel are illustrated in Fig. 971-1, Fig. 971-2 and Fig. 971-3.

Relay and module positions are included in the comprehensive list of electrical components in Table b. The last column of the table refers to photos or line art in this section which illustrates the component.

Front fuse and relay panel

The front fuse and relay panel is mounted in the left side of the luggage compartment.

Porsche 996 Relay ListPorsche 911 Turbo 1989 Fuse Box

1018560

971 -2 Front fuse and relay panel 1987-1989

Relay positions

1.

Footwell blower motors

2.

Oil cooler fan

3.

Cruise control

4.

Horn

5.

Fog lights

6.

A/C condenser blower

Engine compartment fuse and relay panel

The rear fuse and relay panel is located to the left of the engine.

971 -3 Engine compartment fuse and relay panel

1. Fuses

2. Heater blower relay

3. Rear window defogger relay

4. Ignition coil

5. Ground point G402

Ground G116

G106 G104 G116

G402 G407

0018703

Ground locations

G105

G106 G104 G116

G402 G407

0018703

GROUND AND COMPONENT LOCATIONS

The grounds used in Porsche 911 Carrera models from 1985 to 1989 are shown in Table a.

Table a. Ground Locations (Quick Reference)

Ground

Location

Reference figure

G104

Luggage compartment, left (on inner fender panel at rear of fuse box)

971-6

G105

Electric antenna (right front fender inner panel)

G106

Battery ground strap, luggage compartment (left front beside battery)

G116

Trunk floor plate, left (below fuel filler tube)

971-7

G206

Passenger compartment (behind heater/defroster controls)

G302

Ground strap, engine/transmission/body (in front right transmission mount)

G402

Engine compartment, left (behind fuel filter)

971-3

G407

Engine compartment, left (on #1 intake runner)

971-18

G909

Roof, center, interior light and raised stop light ground (convertible only)

1984 Porsche 911 Condenser Blower

0019395

Table b lists electrical components and their locations. Numbers in the Reference figure column refer to photos or illustrations in this group.

Table b. Component Locations

Component

Model Year

Location

Reference figure

A/C blower resistor

1984-1989

Under right front foot rest

971-15

A/C blower switch

1984-1989

Center console

A/C clutch

1984-1989

Right side of engine mounted on A/C compressor

A/C condenser blower

1984- 1989

Luggage compartment, left front

971-4

A/C condenser blower relay

1984- 1989

Luggage compartment fuse/relay panel, relay 6

971-1, 971-2

A/C evaporator blower

1984-1989

Luggage compartment, center, under access panel

971-5

A/C evaporator blower relay

1984-1989

Luggage compartment, center, under access panel

971-5

A/C high pressure switch

1984-1989

Not used

A/C low pressure switch

1984- 1998

Not used

A/C temperature switch

1984-1989

Center console

Additional blower left, right

See Footwell blower, left, right

Additional blower motor resistor

See Footwell blower resistor

Additional blower relay

See Footwell blower relay

Air conditioner

See A/C

Air flow meter

See Volume air flow sensor

Alarm horn

1985-1989

Underneath car, behind fuel pump

Alarm system relay

1985-1989

Luggage compartment, left rear

Alarm system control module

1985- 1989

Luggage compartment, under fresh air blower

971-9

Alarm system control switch

1985-1987

Driver door, above latch

Alarm system control switch

1988-1989

Driver or passenger door handle

Alternator

1984-1989

Rear of engine behind cooling fan

Altitude sensor

1984-1989

Under driver seat

971-17

Antenna amplifier

1984-1989

Luggage compartment, below right defroster vent

971-12

Anti-theft control module

See Alarm system control module

Ashtray light

1984- 1989

Above ashtray

Automatic heating control

See Heater blower switch

Auxiliary fuse/relay panel

1984-1989

Engine compartment left side

Back-up light switch

1984-1986

Next to gear selector rod at front of transmission

Back-up light switch

1987-1989

Left side transmission housing

Back-up lights

1984-1989

Taillights

Battery

1984-1989

Left front luggage compartment

Bimetallic switch

See A/C blower motor resistor

Brake fluid level switch

1984-1989

In brake master cylinder cap

Brake light switches

1984-1989

In luggage compartment mounted on brake master cylinder

971-8

Brake pad sensor

1984-1989

Inner brake pad, each wheel

Buzzer contact

1984-1989

In ignition switch

Central locking button

1985- 1989

Center console

Central locking control module

1985- 1989

Luggage compartment, near right defroster vent

971-12

Charge indicator light

1984-1989

Tachometer

Chime relay

See Warning relay

Cigarette lighter

1984-1989

Next to glove box latch

Table b. Component Locations

Component

Model Year

Location

Reference figure

Climate control

SeeA/C See Heater

Clock

1984-1989

Dashboard, right side

Clock relay

See Warning relay

Coil

See Ignition coil

Condenser blower motor

See A/C condenser blower

Convertible top control module

1986- 1989

Behind right side foot board

Convertible top indicator light

1986- 1989

In gauge cluster, between oil temperature and oil level gauges

Convertible top micro switch control

1986-1989

Bolted to back side of passenger footrest

Convertible top micro switch TDC

1986- 1989

Behind right rear seat side panel, upper switch on top drive

Convertible top motor front left

1986- 1989

In front roof frame

Convertible top motor front right

1986-1988

In front roof frame

Convertible top motor left micro switch

1986- 1989

In front roof frame, between guide pin and latch

Convertible top motor left rear

1986-1989

Behind rear seat back rest

Convertible top motor right micro switch

1986- 1989

In front roof frame, between guide pin and latch

Convertible top motor right rear

1986-1989

Behind rear seat back rest

Convertible top switch

1986-1989

Above ignition switch

Cruise control actuator

1984-1989

Engine compartment, to the left of left rear shock mount

Cruise control module

1984-1989

Below radio, under dash

971-14

Cruise control switch

1984-1989

Right side steering column

Cylinder head temperature sensor

1984-1989

Cylinder head 3

Defogger

See Rear window defogger

Defroster

See Windshield defroster

Distributor

1984-1989

Left side of crankcase behind crankshaft pulley

DME control module

1984-1989

Under driver seat

971-17

DME relay

See Main/fuel pump relay

Door contact switch, left

1985- 1989

Door hinge post

Door contact switch, right

1985- 1989

Door hinge post

Door lock microswitch, left

1985- 1989

On door latch

Door lock microswitch, right

1985- 1989

On door latch

Door lock motor, left

1985- 1989

Bottom rear of door

Door lock motor, right

1985-1989

Bottom rear of door

Drivers seat delaying relay

See Seat heater relay

Emergency flasher

See Turn signal flasher

Emergency flasher switch

1984-1989

Center console

Engine compartment fan

See Heater blower motor

Engine compartment fan relay

See Heater blower relay

Fan temperature switch

1984- 1989

Center of engine, flywheel end

Flasher

See Turn signal flasher

Footwell blower fuse, 10A (left, right)

1984-1989

Kickpanel (left, right)

971-16

Footwell blower motor (left, right)

1984-1989

Kickpanel (left, right)

971-16

Footwell blower relay

1987- 1989

Luggage compartment fuse/relay, relay 1

971-2

Footwell blower resistor

1984-1989

Luggage compartment rear, below right defroster vent

971-11

Fresh air blower

See Windshield defroster blower

Table b. Component Locations

Component

Model Year

Location

Reference figure

Front fog light relay

1984-1989

Luggage compartment fuse/relay panel, relay 5

971-1, 971-2

Front fog light switch

1984-1989

Above radio

Front fog lights

1984-1989

Below front bumper

Fuel injection

See DME

Fuel injectors

1984-1989

Right and left sides of engine

Fuel level gauge

1984-1989

Instrument cluster II

Fuel level sender

1984-1989

Top of fuel tank in luggage compartment

Fuel pump

1984-1989

Mounted to front suspension sub-frame

Fuel pump relay

See Main/fuel pump relay

Fuse holder 10 A (left, right)

1984-1989

With footwell blower, in kickpanel (left, right)

971-16

Fuse/relay panel, front

1984-1989

Luggage compartment, left front fender inner panel

971-1, 971-2

Fuse/relay panel, rear

1984-1989

Engine compartment, left

971-3

Glove compartment light

1984-1989

In dash, above glove compartment door

Hazard warning switch

1984-1989

See Emergency flasher switch

Headlight cleaning control module

1984-1989

Relay panel behind instrument gauges

971-13

Headlight cleaning pump

1984-1989

Luggage compartment, in front of battery

Headlight cleaning switch

1984-1989

Dashboard, between gauges

Headlight dimmer switch

1984-1989

Right side steering column

Headlight switch

1984-1989

left side of dash next to ignition switch

Headlight washer

See Headlight cleaning

Heater blower motor

1984-1989

Engine compartment, left

971-18

Heater blower relay

1984-1989

Engine compartment fuse/relay panel

971-3

Heater blower switch

1984-1989

Between front seats

Heater control

1984-1989

In dash on right side of steering column

Heater lever contacts

1986-1989

Between front seats

Heater temperature sensor

1984-1989

Left heat exchanger

High beam indicator light

1984- 1989

Tachometer gauge

Horn contacts

1984-1989

Steering wheel pad

Horn relay

1984- 1989

Luggage compartment fuse/relay panel, relay 4

971-1, 971-2

Horns, high and low

1984-1989

Behind right headlight

Idle control switch

1984-1989

Left side throttle body

Idle control valve

1984-1989

Between intake runners

Idle stabilizer

See Idle control valve

Ignition coil

1984-1989

Left side engine compartment mounted to inner panel

971-3

Ignition switch

1984-1989

Dashboard, left side of steering column

Inside temperature sensor blower

1984-1989

Dashboard, right of steering column

Instrument lamps

1984-1989

Dashboard gauges

Intensive cleaning fluid pump

1988-1989

Luggage compartment, left

Interior light, left, right

1984-1989

Above doors

Intermittent wiper control module

See Windshield wiper intermittent relay

Intermittent wiper switch

See Windshield wiper intermittent switch

Light switch

1984-1989

Dashboard, next to ignition switch

Luggage compartment light

1984-1989

Luggage compartment hood, right rear

Main/fuel pump relay

1984-1989

Under driver seat

Table b. Component Locations

Component

Model Year

Location

Reference figure

Mirror control

1984- 1989

Interior door panel below vent window

Mirror heating switch

See Rear defogger switch

Oil cooler fan

1987-1989

Behind right headlight

Oil cooler fan relay

1987-1989

Luggage compartment fuse/relay panel, relay 2

971-2

Oil cooler thermoswitch

1986-1989

Top of oil cooler

Oil level transmitter

1984-1989

In oil tank behind right rear wheel

Oil pressure sending module

1984-1989

Right side of crankshaft pulley

Oil pressure switch

1984-1989

Top of crankcase on flywheel end

Oil temperature sensor

1984-1989

Right side crankshaft pulley

Outside mirror heater

1985-1989

Outside mirror glass

Oxygen sensor

1984- 1989

Rear of catalytic converter

Parking brake contacts

1984- 1989

Hand brake bracket, rear

Passenger seat delaying relay

See Seat heater relay

Power door locks

See Central locking

Power window motor

1986-1989

Inside door

Power window relay

1987-1989

Relay panel, behind gauges

971-13

Power window relay

1984-1986

Luggage compartment fuse/relay panel, relay 2

971-1

Power window switch

1984-1989

Interior door panel

Pulse transmitter

1984-1985

See Windshield wiper intermittent relay

Radio

1984-1989

Dashboard, center

Radio speaker, front left, front right

1984-1989

Interior door panel, left, right

Radio speakers rear

1984-1989

Utility shelf, below rear window

Rear window defogger

1984-1989

In rear window

Rear window defogger and mirror heating switch

1984-1989

Above radio

Rear window defogger relay

1984-1989

Engine compartment fuse/relay panel

971-3

Rear window wiper motor

1984-1989

Inside rear engine lid

Rear window wiper switch

1984-1989

Dashboard, between gauges

Reference sensor

1984-1989

Top left side of clutch bellhousing

Reverse lights

See Back-up lights

Seat adjusting motors

1985- 1989

Seat bottom

Seat adjusting switches

1985-1989

Seat bottom

Seat belt contact

1984- 1989

Seat belt latch

Seat belt control module

See Clock relay

Seat belt switch

See Seat belt contact

Seat belt warning light

1984-1989

Dashboard

Seat heater element, backrest

1985-1989

Seat back

Seat heater element, cushion

1985-1989

Seat bottom

Seat heater relay

1985- 1989

Seat bottom

Seat heater switch left

1985- 1989

Seat bottom, left, with seat adjusting switches

Seat heater switch right

1985- 1989

Seat bottom, right, with seat adjusting switches

Speed sensor

1984-1989

Top left side of clutch bellhousing

Speed transmitter

1984-1989

See Speedometer pick-up

Speedometer

1984-1989

Instrument cluster

Table b. Component Locations

Component

Model Year

Location

Reference figure

Speedometer pick-up

1984-1986

Right side of transmission final drive above axle

Speedometer pick-up

1987-1989

Left side transmission final drive

Starter

1984-1989

Right side transmission bell housing

Stop light switch

See Brake light switches

Sunroof motor

1984-1989

Inside roof headliner between sunroof and rear window

Sunroof switch

1984-1989

Above ignition switch

Tachometer

1984-1989

Center gauge in instrument cluster

TDC sensor

1984- 1989

Top of crankcase on top of flywheel

Temperature sensor, cylinder head

1984- 1989

Cylinder head 3

Tempostat

See Cruise control

Thermo bimetal switch

See A/C blower resistor

Throttle switch

1984-1989

Right side of throttle body

Turn signal flasher

1984-1989

In luggage compartment left rear, in front of power window relay

971-13

Turn signal switch

1984-1989

Left side steering column

Voltage regulator

1984-1989

Mounted to rear of alternator

Volume air flow sensor

1984-1989

Top of engine mounted between intake runners

Warning relay

1984- 1989

Relay panel behind gas gauge

971-13

Window motor

1984-1989

See Power window motor

Window switch

1984- 1989

See Power window switch

Windshield defroster blower

1984-1989

Luggage compartment, rear

Windshield defroster switch

1984-1989

Beside radio

Windshield washer nozzles, heated

1986-1989

Front cowl, right and left sides

Windshield washer pump

1984-1989

Luggage compartment, in front of battery

971-4

Windshield washer switch

1984-1989

See Windshield wiper switch

Windshield wiper diode

1984-1989

Luggage compartment, under fresh air blower

Windshield wiper intermittent relay

1984-1989

Luggage compartment, behind fresh air blower

971-9

Windshield wiper intermittent switch

1986-1989

Dashboard, between speedometer and clock

Windshield wiper motor

1984-1989

Behind speedometer and clock

Windshield wiper pulse transmitter

1984-1989

See Windshield wiper intermittent relay

Windshield wiper switch

1984-1989

Right side steering column

1984 Porsche 911 Trunk

0019392

■^971-4 Luggage compartment, left front

1. Windshield washer pump

2. A/C condenser blower

971-5 Luggage compartment, center, under hinged ^ access panel

1. A/C evaporator blower relay

2. A/C evaporator blower

^ 971-6 Luggage compartment, left, behind fuse/relay ^ panel

1. Ground point G104

1984 Porsche 911 Condenser Blower

0019388

Electrical Hinged Panels Not Secured

j 0019390

Emergency Flasher Relay Module

0019389

971-7 Luggage compartment, left rear (brake boost-^ er/master cylinder assembly removed)

1. Ground point G116

^ 971 -8 Luggage compartment, left rear, at brake master ^ cylinder

1. Brake light switch

^971-9 Luggage compartment, center rear (fresh air ^ plenum removed)

1. Alarm system control module

2. Wiper motor intermittent relay

Intermittent Wiper Control Module

00190161

Porsche 911 Power Window Relay

a 0019391

^ 971-13 Dashboard, left (left side instruments removed)

1. Power window relay

2. Warning chime relay

3. Windshield washer relay

4. Turn signal/emergency flasher relay (not shown)

971-14 Dashboard, center

1. Cruise control module

0019384

Porsche 924 Thermo Resistor Location

1. A/C blower resistor (bi-metallic switch)

971 -15 Front bulkhead, ahead of passenger seat

1984 Porsche 928 Blower Relay

0019385

Relay Under Dash Board Seat Toledo

0019384

Foot Well Heater Blower 911

¡0019383

971-16 Behind kickpanel, right (left side is similar)

1. 10 A fuse holder for footwell blower

2. Footwell blower

971 -17 Under driver seat

1. DME control module

2. Main/fuel pump relay

3. Altitude sensor

^ 971-18 Left intake manifold, runner no.1

1. Heater blower motor

2. Ground point (G407) for DME components

Porsche Dme Relais

0018559

1989 Camaro Fuel Pump Fuse Location

0019393

Luggage compartment fuse/relay panel ooooooo

FUSE POSITION TABLES

Table c through Table g list fuse positions in the front fuse/relay panel located in the left side of the luggage compartment and the rear fuse/relay panel located in the engine compartment.

Table c. 1984 Fuse Positions

Fuse

Rating

Protected circuit

Luggage compartment fuse/relay panel #3

1

25

Power windows Sunroof

2

25

Air conditioning system Seat adjustment

3

25

Headlight washer

Luggage compartment fuse/relay panel #1

Glove compartment light Interior light

Luggage compartment light

2

16

Windshield defogger Emergency flasher

3

25

Fuel pump

4

8

Brake lights Cruise control

5

16

Outside mirror Heating/A/C control module

6

25

Cigarette lighter Windshield washer Rear window wiper

7

Rear defogger switch light

Rear window defogger relay

8

16

Back-up lights Emergency flasher relay Rear turn signal lights

9

5

Turn signal lights front (left)

10

5

Turn signal lights front (right)

Luggage compartment fuse/relay panel #2

1

8

High beam (left) High beam indicator

2

8

High beam (right)

3

Fog light switch indicator

4

8

Low beam (right)

5

5

Parking lights (left) Engine compartment light

6

5

Parking lights (right)

7

5

License plate lights

8

16

Fog light relay

Engine compartment fuse/relay panel

1

16

Heater blower relay

2

25

Heater blower

Rear window wiper

Fuse designations and locations are subject to change and may vary from car to car, depending on options.

Luggage compartment fuse/relay panel

I I I

I I I I I I I I I I

^ Table e. 1986 Fuse Positions

Fuse

Rating

Protected circuit

Luggage compartment fuse/relay panel #3

1

25

Power windows Seat heating Sunroof

2

25

Air conditioning system Seat Adjustment

3

25

Convertible top Headlight washer

Luggage compartment fuse/relay panel #1

Glove compartment light Interior light

Luggage compartment light Radio

2

16

Central locking system Emergency flasher

3

25

Fuel pump

4

8

Brake lights Cruise control

5

16

Outside mirrors Heating/A/C control module

6

25

Cigarette lighter Fresh air blower Rear window defogger

7

25

Heated washer nozzles Rear window wiper Windshield wiper switch Wiper delay relay

8

16

Back-up lights Emergency flasher relay Rear turn signal lights

9

5

Turn signal lights front (left)

10

5

Turn signal lights front (right)

Luggage compartment fuse/relay panel #2

1

8

High beam (left) High beam indicator

2

8

High beam (right)

3

8

Low beam (left)

4

8

Low beam (right)

5

5

Parking lights (left) Engine compartment light

6

5

Parking lights (right)

7

5

License plate lights Headlight switch illumination Fog light switch illumination Rear fog light

8

16

Fog lights

Engine compartment fuse/relay panel

1

16

Heater blower relay

2

25

Heater blower

Rear window wiper

Additional fuses

2.5

License plate lights (in luggage compt.)

2.5

Convertible top control (in luggage compt.)

Fuse designations and locations are subject to change and may vary from car to car, depending on options.

Luggage compartment fuse/relay panel

#3 #1 #2

I I I I I I M

0019397

^ Table f. 1987 Fuse Positions

Fuse

Rating Protected circuit

Luggage compartment fuse/relay panel #3

1

25

Power windows Seat heating Sunroof

2

25

Air conditioning system Seat Adjustment

3

25

Convertible top Headlight washer

Luggage compartment tuse/relay panel #1

Glove compartment light Interior light

Luggage compartment light Radio

2

16

Central locking system Emergency flasher

3

25

Fuel pump

4

8

Brake lights Cruise control

5

16

Outside mirrors Heating/A/C control module

6

25

Cigarette lighter Fresh air blower Rear window defogger

7

25

Heated washer nozzles Rear window wiper Windshield wiper switch Wiper delay relay

8

16

Back-up lights Emergency flasher relay Rear turn signal lights

9

5

Turn signal lights front (left)

10

5

Turn signal lights front (right)

Luggage compartment fuse/relay panel #2

1

8

High beam (left) High beam indicator

2

8

High beam (right)

3

8

Low beam (left)

4

8

Low beam (right)

5

5

Parking lights (left) Engine compartment light

6

5

Parking lights (right)

7

5

License plate lights Headlight switch illumination Fog light switch illumination

8

16

Fog lights Rear fog light

Engine compartment fuse/relay panel

1

16

Heater blower relay

2

25

Heater blower

Rear window wiper

Additional fuses

16

Radio (in luggage compt.)

2.5

Convertible top control (in luggage compt.)

Fuse designations and locations are subject to change and may vary from car to car, depending on options.

Luggage compartment fuse/relay panel

Was this article helpful?

+3 0
DIY Battery Repair

DIY Battery Repair

You can now recondition your old batteries at home and bring them back to 100 percent of their working condition. This guide will enable you to revive All NiCd batteries regardless of brand and battery volt. It will give you the required information on how to re-energize and revive your NiCd batteries through the RVD process, charging method and charging guidelines.

Get My Free Ebook


Responses

Post a comment