Cutting Unit Position Switch - Toro Reelmaster 7000-D Service Manual

Cutting Unit Position Switch

The cutting unit position switch is a normally open prox-
imity switch that is located on the traction unit frame
(Fig. 47). The sensing plate that closes the switch is a
gusset on the front right cutting unit (#5) lift arm. When
the cutting units are lowered, the gusset on the lift arm
comes to rest in front of the position switch and the
switch closes. The cutting unit position switch is an input
used by the Toro Electronic Controller (TEC) to manage
various machine functions.
Testing
The cutting unit position switch and its circuit wiring can
be tested as a TEC input using the InfoCenter Display
(see InfoCenter Display in this chapter). If testing deter-
mines that the switch and circuit wiring are not function-
ing correctly, proceed with the following test procedure:
1. Park machine on a level surface, lower cutting units,
engage parking brake and stop engine.
2. Turn ignition switch to ON position and check LED on
cable end of cutting unit position switch (Fig. 47). The
LED should be illuminated when the cutting units are ful-
ly lowered. The LED should not be illuminated when the
cutting units are raised above the turn−around position.
3. If the cutting unit position switch LED did not function
correctly:
A. Make sure that the cutting unit position switch is
properly adjusted (see Cutting Unit Position Switch
in this chapter). If necessary, adjust switch and
retest.
B. Make sure ignition switch is OFF and disconnect
the cutting unit position switch from machine wire
harness.
C. Verify that the machine wire harness connector
terminal for black wire is closed (continuity) to
ground.
D. Turn ignition switch to the ON position (do not
start engine) and verify with a multimeter that ma-
chine wire harness connector terminal for pink wire
has system voltage (12 VDC) present.
4. If black wire is closed to ground, pink wire has system
voltage present and switch LED did not function as de-
sired, replace cutting unit position switch. Adjust switch
after installation (see Cutting Unit Position Switch in this
chapter).
Electrical System
1
1. Position switch
5. If the cutting unit position switch tests correctly and
a circuit problem still exists, check green output wire
continuity between cutting unit position switch connec-
tor and TEC connector (see Electrical Schematic and
Wire Harness Drawings in Chapter 10 − Foldout Draw-
ings in this manual).
6. Make sure that cutting unit position switch is con-
nected to wire harness when testing is complete.
Page 6 − 48
2
FRONT
Figure 47
2. Front right (#5) lift arm
Reelmaster 7000−D