The 3rd generation Scania series was produced in 1987, 1988, 1989, 1990, 1991, 1992, 1993 and 1994. Depending on the region of delivery, Scania 3 was supplied both with a bonneted cab and in a hoodless version. In this publication you will find a designation of Scania 3 fuses and relays with boxes diagrams and their designs. Let’s highlight the fuse responsible for the cigarette lighter.
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 of which the current scheme can be applied.
Main box
Fuse
Diagram
Protected components
| 1 | 10A Dipped beam, right side |
| 2 | 10A Low beam, left side |
| 3 | 10A High beam, left side, spotlight |
| 4 | 10A High beam, right |
| 5 | 10A Instrument lighting |
| 6 | 20A Rear fog lights, license plate lights, work lights |
| 7 | 20A Parking light, right side |
| 8 | 10A Headlight washers and cleaners |
| 9 | 20A Parking light, left side, side lights |
| 10 | 10A Windshield wipers and washers |
| 11 | 10A Automatic mountain brake, brake lights |
| 12 | 10A Bulbs of control devices and indicators |
| 13 | 10A Outside temperature sensor, trip meter, retarder, warning lights, charge air cooler bypass valve, gearbox oil cooling |
| 14 | 10A Direction indicators, axle load limiter |
| 15 | 20A Rear lights, high beam flasher |
| 16 | 10A Gearbox |
| 17 | 10A Hand mountain brake, air suspension, white smoke limiter, rear axle lift, auxiliary heater, differential lock |
| 18 | 10A Cab lighting, beacon, radio memory / code, central locking, auxiliary heater, footrest lighting |
| 19 | 10A Cigarette lighter , clock, tachograph, diagnostics, trip meter, portable lamp socket |
| 20 | 10A Radio |
| 21 | 20A Buzzer, fan, air conditioner |
The fuse number 19, 10A, is responsible for the cigarette lighter.
Relay
| A | Power supply, key ignition position |
| B | Power supply, parking signals |
| C | Reserve |
| D | Reserve |
| E | Intermittent wiper operation |
| F | Low pressure buzzer in the brake system |
| G | Fan motor |
| H | Reversing lights |
| K | Rear fog lights |
| L | Coolant level |
| M | White smoke limiter |
| N | Starter lock |
| O | Reserve |
| P | Radio |
| R | Power supply bus 61, charging from the generator |
| S | Air conditioning system |
Additional box
Box 1
- 20A Parking heater, high beam
- 20A Gearbox cooling, additional heater
- 10A Torch ignition, power take-off, automatic transmission
- 10A Fog lights
- 20A Fog lights
- Reserve
Box 2
- 20A Dehumidifier, electric heated seats and mirrors
- 10A Warnings, battery heater, fuel heater
- 10А EDC
- 20А EDC
- 20A Glass mirror lifters, mirror adjustment
- 10A CAG – emergency transfer, speed limiter
Box 3
In the old version Wabco “B” Bosch “Diagnos” Bosch “Gamma” there are ABS fuses, the newer Bosch “Gamma” Wabco “C”:
- 30A Trailer control valve supply voltage
- 5A Supply voltage of the control unit, trailer
- Reserve
- 10A Emergency lamp, vehicle
- 5A Supply voltage of the control unit
- 20А Supply voltage of relay R7, R10
Relay
- Relay for transmission cooling (relay R5)
- Electronic engine control (EDC R34)
- EDC, Diode Block (D18)
- EDC + CAG (R43)
- Horn relay ADR (R41)
- Relay for retarder (R78)
- Separate trailer brake lights (R33)
- High beam relay (R6)
- Fog lamp relay (R15)