Relays With 4 Terminals - Toro Reelmaster 5410 Series Service Manual

Relays with 4 Terminals

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1. Kubota diesel relays
2. Yanmar diesel relays
3. Kubota gas relays
Testing the Relays with 4 Terminals
Electrical System: Testing the Electrical Components
A number of electrical relays that have 4 terminals are used in the machine
electrical system. A tag near the wire harness relay connector can be used
to identify each relay.
The main power relay is used to provide current to the operator seat, InfoCenter,
TEC, headlights, power point, and optional electric equipment. When the key
switch is in the R or S
UN
The glow relay is used on machines with a Kubota or Yanmar diesel engine to
provide current to the engine glow plugs. On machines with a Kubota diesel
engine, the glow relay is energized by the TEC. The glow relay is energized by
the engine ECU on machines with a Yanmar diesel engine.
The main power and glow relay are attached to a frame bracket under the hood
next to the hydraulic pump driveshaft
Note: A fault code may be displayed on the InfoCenter display if the main power
relay, glow relay or circuit wiring is damaged.
1. Park the machine on a level surface, lower the cutting units, shut off the
engine, set the parking brake, and remove the key from the key switch.
2. Open the hood to get access to the relays. Remove the hood saddle from
the machine for easier access to relay.
3. To ensure that the machine operation does not occur unexpectedly,
disconnect the negative (-) cable from the battery and then disconnect the
Figure 256
4. Main power relay
5. Glow relay
position, the main power relay is energized.
TART
(Figure 256).
Page 7–88 Reelmaster ® 5410/5510/5610 Series
15216SL Rev C