Scania 3 (1987-1994) – fuse box

Scania 3 – fuse box diagram

Year of production: 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994.

The cigarette lighter fuse (power socket) on the Scania 3 is fuse 19 (10A) in the fuse box.

The main boxes with fuses and relays are located in the passenger compartment, on the right side of the instrument panel, on the passenger side, behind the protective cover. On the reverse side, the current scheme can be used.

READ:  Scania 4 (1994-2005) - fuse box

Main box

The scheme of the fuse box

Number Description
1 10A Dipped beam, right-hand side
2 10A Dipped beam, left-hand side
3 10A High beam, left side, headlight
4 10A High beam, right
5 10A Instrument lighting
6 20A Rear fog lights;

Number plate lighting;

Work lights.

7 20A Parking light, right-hand side
8 10A Headlamp washers and cleaners
9 20A Parking light, left side, sidelights
10 10A Windshield wipers and washers
11 10A Automatic mountain brake;Brake lights.
12 10A Bulbs for controls and indicators
13 10A Outside temperature sensor;

Mileage counter;


Warning lights;

Charge air cooler bypass valve;

Gearbox oil cooling.

14 10A Direction indicators;

Axle load limiter.

15 20A Taillights, high beam blinker
16 10A Gearbox
17 10A Manual mountain brake;

Pneumatic suspension;

White smoke limiter;

Rear axle lift;

Parking heating;

Differential lock.

18 10A Cabin lighting;

Warning lamp;

Radio memory / code;

Central lock;

Parking heating;

Lighting foot each.

19 10A  Lighter;




Daily mileage counter;

Portable lamp socket.

twenty 10A Radio
21 20A Buzzer;Fan;

Air conditioner.

READ:  Scania 5 (2005-…) - fuse box



A Power supply, key ignition position
B Power, parking signals
C. Reserve
D Reserve
E. Intermittent wipers
F. Low pressure buzzer in the brake system
G. Fan motor
H. Reversing lamps
K. Rear fog lights
L Coolant level
M. White smoke limiter
N Starter lockout
O Reserve
P. Radio
R Power Rail 61, Generator Charging
S Air conditioning system

Extra chest

Box 1

  1. 20A Auxiliary heating, high beam
  2. 20A Gearbox cooling, auxiliary heater
  3. 10A Burner ignition, power take-off, automatic transmission
  4. 10A Fog lamps
  5. 20A fog lights
  6. Reserve
READ:  Scania 4 (1994-2005) - fuse box

Box 2

  1. 20A Air Dryer, Electric Heated Seats and Mirrors
  2. 10A Warnings, battery heater, fuel heater
  3. 10А EDC
  4. 20А EDC
  5. 20A Glass mirror lifters, mirror adjustment
  6. 10A CAG – emergency transfer, speed limiter

Box 3

In the old version of Wabco “B” Bosch “Diagnos” Bosch “Gamma” there are ABS fuses, newer Bosch “Gamma” Wabco “C”:

  1. 30A Trailer control valve supply voltage
  2. 5A Supply voltage for the trailer control unit
  3. Reserve
  4. 10A Emergency lamp, vehicle
  5. 5A Control unit supply voltage
  6. 20А Supply voltage for the R7, R10 relay


  1. Transmission cooling relay (R5 relay)
  2. Electronic engine control (EDC R34)
  3. EDC, diode block (D18)
  4. EDC + CAG (R43)
  5. ADR horn relay (R41)
  6. Retarder relay (R78)
  7. Separate trailer brake lamps (R33)
  8. High beam relay (R6)
  9. Fog lamp relay (R15)

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