PRO-150 V1.0 11/18
Page 26
www.4qd.co.uk
12. Fuse tracks
Two fuse tracks are present in the connections to the 6 pin connector:
These fuses are present to restrict damage in the event of a wiring fault to the
control or brake connectors. The two fuse tracks are indicated in the drawing.
F1: in the earth line to pin F. This also disconnects the earth to pin A of the brake
connector. It can be blown by an earth loop.If this fuse is blown, fault PO is
indicated.
F2: in the ignition feed (pin A) and power to the parking brake. It can be blown by a
wiring short to chassis (battery -ve). If this track is blown then the Pro-150 will be
completely dead.
If a fuse track gets blown, a self-resetting fuse (FSR- 090) may be fitted in the
holes provided.
Alternatively a single copper strand from a 7/02 cable may be used,
Do not use a strand thicker than
0.2mm diameter as this could allow
other tracks to get damaged in the
event of a fault.
