Fuses and relays - Duratec
Duratec (excl. EU4 175 & 237)
B = Ignition Supply – Engine
E = Brake / Reverse Lights
L = Flasher Unit – Fog / Dipped Beam
Note: * 620R uses 30A
Fuses and relays - Duratec EU4 175 / 237
4 = Instruments/relay drives/immobiliser
11 = Switch LED/Relay drives
Figure 28: Duratec Fuse Box and Relay layout
Fuses are simple circuit breakers, which protect
electrical equipment by preventing the electrical
circuits from being overloaded. A ‘blown’ fuse is
indicated when the electrical equipment it protects
becomes inoperative. Check a suspect fuse by
removing it from the fuse box and looking for a
break in the wire inside the fuse.
Renewing a fuse
Always turn off the ignition switch and the
appropriate electrical circuit before removing a
fuse. Always replace a fuse with another of the
same (or lower) rating. If a replacement fuse blows
almost immediately, this indicates a serious
electrical problem and the circuit MUST be checked
by Caterham.
Fuse colours
The fuses are colour coded to identify their
amperage ratings as follows:
30 amp
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