Relays With Four (4) Terminals - Toro Groundsmaster 5900 Series Service Manual

Relays with Four (4) Terminals

Groundsmaster ® 5900 & 5910
16227SL Rev B
g288551
1. Front power center
2. Horn relay
3. Main power relay
The Groundsmaster 5900 and 5910 use a number of electrical relays that have
four (4) terminals. A tag near the wire harness relay connector can be used to
identify each relay. The following relays are located in the front power center
behind the operator's seat
•
The main power relay supplies electrical power for the InfoCenter Display,
operator seat compressor, power point receptacle, horn switch, road light
switch, brake light relay and optional electrical equipment. The main power
relay is energized when the key switch is in the START or RUN position.
•
Two (2) controller relays supply power for the master and slave controller
outputs. TEC power relay 1 supplies master controller PWR 4 (outputs
11−14) and slave controller PWR 2−4 (outputs 1−14). TEC power relay 2
supplies master controller PWR 2−3 (outputs 1−10). The TEC power relays
are energized when the key switch is in the START or RUN position.
•
The horn relay supplies power to the horn. The horn relay is energized when
the key switch is in the START or RUN position (main power relay energized)
and the horn button is pressed.
1
2
Figure 240
4. TEC power relay 2
5. TEC power relay 1
(Figure 240):
Page 6–99
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Electrical System: Component Testing