Relays with 5 Terminals (Diesel Engine)
g230517
Figure 258
1.
Kubota diesel relays
3.
Start relay
2.
Yanmar diesel relays
4.
EGR relay
The electrical system in machines with a Kubota or Yanmar diesel engine
include electrical relays that have 5 terminals. A tag near the wire harness relay
connector can be used to identify each relay.
The start relay is used to provide current to the engine starter solenoid. On
machines with a Kubota diesel engine, the start relay is energized by the Toro
Electronic Controller (TEC). The start relay is energized by the engine ECU on
machines with a Yanmar diesel engine.
The EGR relay is used on machines with a Yanmar diesel engine to provide
current to the engine EGR valve when energized by the engine ECU.
The start relay and EGR 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 start relay,
EGR relay or circuit wiring is damaged.
Testing the Relays with 5 Terminals
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. Ensure that the machine operation does not occur unexpectedly, disconnect
the negative (-) cable from the battery and then disconnect the positive (+)
cable from the battery; refer to
Servicing the Battery (page 7–125)
.
4. Locate the relay that is to be tested.
5. Disconnect the wire harness electrical connector from the relay. Remove the
relay from the mounting bracket for testing.
Note:
Before taking the small resistance readings with a digital multimeter,
short the multimeter test leads together. The meter displays a small
resistance value (usually 0.5 ohms or less). This resistance is because of the
internal resistance of the multimeter and test leads. Subtract this value from
the measured value of the component that you are testing.
Electrical System: Testing the Electrical Components
Page 7–90
Reelmaster
®
5410/5510/5610 Series
15216SL Rev C
Summary of Contents for Reelmaster 5510 Series
Page 4: ...NOTES NOTES Page 4 Reelmaster 5410 5510 5610 Series 15216SL Rev C...
Page 10: ...Preface Page 10 Reelmaster 5410 5510 5610 Series 15216SL Rev C...
Page 18: ...Safety Safety and Instructional Decals Page 1 8 Reelmaster 5410 5510 5610 Series 15216SL Rev C...
Page 356: ...Hydraulic System Service and Repairs Page 6 238 Reelmaster 5410 5510 5610 Series 15216SL Rev C...
Page 594: ...Cutting Unit Service and Repairs Page 9 64 Reelmaster 5410 5510 5610 Series 15216SL Rev C...
Page 662: ......
