Fuses and relays (Sierra)

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Since March 1984 (manufacturing date code "EA") a 15 A windscreen wiper motor fuse has been introduced (instead of the previously installed 10 A).

Caution: The main fuse and relay box is located at the rear of the engine compartment on the left side.


Additional fuses are located in the box under the front panel on the right side (between the middle part of the front panel and the glove compartment) and are:
  • fuse N30 (20 A - green) - anti-lock braking system (ABS);
  • fuse N31 (30A - purple) - ABS pump;
  • fuse N32 (15 A - yellow) - lambda probe;
  • fuse N35 (1 A – black) – electronic control device (cars with a catalytic converter).

In addition, the following fuses are located on individual electrical power wires:
  • main fuse (approx. 55 A) – on the (+) battery wire;
  • on-board computer (1 A) - under the instrument panel;
  • radio receiver (2 A; 2.5 A; 3.15 A or 6.3 A) – on the power cord or on the back of the radio.

Additionally, in vehicles with air conditioning, a fuse is installed in an additional fuse box in the engine compartment (on the right side).

Since September 1985, the connection of fuses and relays in electrical equipment has been modified.

Fuses



The main fuse and relay box may contain the following relays:
  • N A: free space;
  • N B: Additional daytime running lights (Sweden and Norway only) or rear fog lights;
  • N C: sound signal;
  • ND: Engine Management System;
  • N E: Electric adjustment of position and heating of the outside rearview mirror;
  • NF: low beam headlights;
  • NG: heated front seats;
  • N H: front fog lights;
  • NI: ignition switch;
  • N II: headlights for daytime driving (only Sweden and Norway);
  • N III: headlight wipers;
  • N IV: free space;
  • NV: Windscreen Wiper Programmer;
  • N VI: temporary interior lighting switch;
  • N VII: Anti-lock braking system (ABS);
  • N VIII: Automatic transmission kick-down mechanism;
  • N IX: fuel pump (additional air conditioning devices);
  • N X: high beam headlights;
  • N XI: Engine Management Systems;
  • N XII: safe engine starting (starter blocking) in vehicles with automatic transmission.

The engine speed sensor relay may be located in the engine compartment (near the left wall).



The following relays may be located in the box under the front panel on the right side (between the middle part of the front panel and the glove compartment):
  • anti-lock braking system (ABS);
  • fuel injection systems;
  • rear window heating;
  • additional warning indicator relay.

The turn signal switch is located near the steering column holder.

Identification of fuses



N fuse
Current strength (A)
Protected circuit
1
20
Left high beam headlight
2
20
Right high beam headlight
3
10
Left low beam headlight
4
10
Right low beam headlight, headlight adjustment adjuster
5
10
Left side lights: front and rear
6
10
Right side lights: front and rear
7
15
Instrument cluster and number plate lighting
8
15
Air conditioning control, automatic rear suspension height adjustment
9
30
Headlight wiper, electric opening of the rear body door lock
10
20
Central locking, interior lighting, clock, electric rearview mirror adjustment, radio
11
20
Fuel pump (auxiliary air conditioning device - in this case 30 A)
12
10
Emergency lights
13
30
Heated front seats, cigarette lighter
14
30
Sound signal
15
30
Windscreen wiper motors and windscreen washer pump
16
30
Heated rear window and outside rearview mirror
17
20
Front fog lights
18
30
Fan motor
19
Free space
20
15
Direction indicators, reversing lights
21
15
Brake lights
22
10
Power supply for control devices and instruments
23
30
Raising the front side windows and opening the sunroof
24
30
Raising the side rear windows






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