Toro Groundsmaster 7210, Service Manual

Page: 235 / 342

Glow Relay
g035044
Figure 163
1. Glow relay
g034744
Figure 164
The glow relay of the Groundsmaster 7210 machine has 4 terminals and allows
electrical current to the engine glow plugs when energized. The glow relay is
attached to the ECU bracket that is located above the battery.
The ECU energizes the glow relay when you initially turn the key switch to the
O
N
/P
REHEAT
position and also to the S
TART
position.
Testing the Glow Relay
1. Unlatch the hood and raise it.
2. Ensure that the key switch is in the O
FF
position. Disconnect the wire harness
electrical connector from the glow relay.
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.
Groundsmaster 7210 Page 5–39 Electrical System: Testing the Electrical Components
16222SL Rev C