Fuses And Relays - Duratec; Fuses And Relays - Duratec Eu4 175 / 237; Renewing A Fuse; Fuse Colours - Caterham SEVEN Owner's Handbook Manual

Fuses and relays - Duratec

Duratec (excl. EU4 175 & 237)
Relays
Ignition
Flasher
Reverse
Starter
Fuel pump
Cooling Fan
Fuses
A = Ignition Supply
B = Ignition Supply – Engine
C = Cooling Fan
D = Fuel Pump
E = Brake / Reverse Lights
F = Instruments
G = Heater
H = Heated Screen
I = Wash / Wipe
J = Power Socket
K = Horn
L = Flasher Unit – Fog / Dipped Beam
M = Switch LED's
N = Side Lights
O = Flasher Unit / D.C.M
P = P.C.M Main Supply
Q = Main Beam
R = Keyless Immobilizer
Note: * 620R uses 30A

Fuses and relays - Duratec EU4 175 / 237

Duratec EU4 175 / 237
Relays
Starter
Ignition
Reverse
Flasher
Fuses
1 = ECU/lambda IGN
2 = Engine IGN
3 = Brake/Reverse
4 = Instruments/relay drives/immobiliser
5 = Heater
6 = Demist
7 = Wipe/Wash
8 = Power socket
9 = Horn
10 = Dip Beam
11 = Switch LED/Relay drives
12 = Side Lights
13 = Flasher Unit/DCM
14 = ECU main supply
15 = Main Beam
16 = Immobiliser
17 = ACC Pedal
18 = Engine IGN
19 = ECU main supply
20 = ECU main supply
46

Figure 28: Duratec Fuse Box and Relay layout

1
2
3
4
5
6
15A
15A
20A*
15A
Fuses are simple circuit breakers, which protect
10A
electrical equipment by preventing the electrical
7.5A
circuits from being overloaded. A 'blown' fuse is
7.5A
indicated when the electrical equipment it protects
10A
becomes inoperative. Check a suspect fuse by
10A
removing it from the fuse box and looking for a
10A
break in the wire inside the fuse.
7.5A
15A

Renewing a fuse

5A
7.5A
Always turn off the ignition switch and the
10A
appropriate electrical circuit before removing a
15A
fuse. Always replace a fuse with another of the
15A
same (or lower) rating. If a replacement fuse blows
5A
almost immediately, this indicates a serious
electrical problem and the circuit MUST be checked
by Caterham.

Fuse colours

1
2 The fuses are colour coded to identify their
3 amperage ratings as follows:
4
ORANGE
BROWN
15A
RED
15A
BLUE
10A
YELLOW
7.5A
CLEAR
7.5A
GREEN
10A
10A
10A
7.5A
15A
5A
7.5A
10A
15A
15A
7.5A
5A
15A
20A
20A
5 amp
7.5 amp
10 amp
15 amp
20 amp
25 amp
30 amp