Yamaha YZ450FP 2023, Owner'S Service Manual

Page: 67 / 388

CABLE ROUTING DIAGRAM
2-22
1. Fuel pump coupler (black, 5-pin)
2. Coolant temperature sensor coupler (black,
2-pin)
3. Upper radiator boss
4. Throttle position sensor coupler (black, 3-pin)
5. Lower radiator boss
6. Radiator breather hose
7. Radiator hose
8. CCU (Communication Control Unit)
9. Wire harness (to the negative battery cou-
pler)
10.Positive battery lead
11.ECU (Engine Control Unit)
12.Wire harness
13.CCU sub-lead
A. After connecting, install the cover over the
fuel pump 5-pin coupler (black).
B. When installing the engine ground lead termi-
nal, it can face either way. Point the engine
ground lead to the upper side of the vehicle,
and then install it.
C. After connecting the water temperature sen-
sor 2-pin coupler (black), install the cover
over it.
D. After connecting the throttle position sensor
3-pin coupler (black), install the cover over it.
E. The radiator breather hose should be routed
in the following order and via each mentioned
point.
The upper radiator boss at the rear of the
vehicle

The lower radiator boss at the front of the
vehicle

The radiator hose at the front of the vehicle

For routing the remaining leads, refer to the
diagram “P” under “Frame and engine (front
left side view)”.