Toro Groundsmaster 3280-D Service Manual page 297

Controller Checks
Groundsmaster ® 3280-D/3320
05138SL Rev B
1. Ensure that there is power from the battery.
2. Disconnect the electrical connector to the fuel stop solenoid to prevent the
engine from starting.
3. Turn the key switch to the R
R position:
UN
A. Glow indicator lamp is on.
B. Glow relay is energized.
C. Glow plugs are energized.
D. Glow indicator lamp goes out and glow plugs de-energize after
approximately 6 seconds.
4. Turn the key switch to the S
S position:
TART
A. Glow indicator lamp is out.
B. Glow relay is energized.
C. Glow plugs are energized.
D. Power exists at terminal 1 of the glow controller.
Note: If there is no power to terminal 1 of the glow controller, check the
continuity of the circuitry from the key switch to the glow controller and
perform step 4
(page A–1).
5. If any of the conditions in step
any of the other conditions in step
A. Check the continuity of the circuitry from the battery to the glow relay and
glow plugs; refer to the Electrical Schematics in
B. Check the continuity of the circuitry from the battery to key switch, glow
controller, glow lamp, glow relay, and ground; refer to the Electrical
Schematics in Appendix A (page
C. Replace the parts as necessary.
6. Connect the electrical connector to the fuel stop solenoid.
position. Check the following while in the
UN
position. Check the following while in the
TART
again; refer to the Electrical Schematics in
3 are not met or power to terminal 1 exists and
4 are not met:
A–1).
Page 6–69 Electrical System: Testing the Electrical Components
Appendix A
Appendix A (page A–1).