Tvs Diode; Magneto Stop Relay - Toro TITAN Service Manual

Measuring Clutch Current Draw

TVS Diode

TVS Diode Testing

Magneto Stop Relay

Titan Service Manual
3438-774 Rev A
Note: Do not measure current draw if the clutch has shorted to ground or if the
resistance measurement is out of specification.
1. Park the machine on a level surface and disengage the PTO. Stop the
engine, wait for all moving parts to stop, and remove the key. Engage the
parking brake.
2. Disconnect the clutch wire connector.
3. Set the multi-meter to measure amps (10 amp scale).
4. Connect the positive meter lead to the chassis harness terminal A.
5. Connect the negative meter lead to the corresponding clutch terminal.
6. Connect a short jumper lead from terminal C (large red wire with cap) to
terminal D (large red wire with no cap).
7. Turn the ignition switch to RUN and the PTO switch to the ON position.
8. Record the amp reading and refer to the PTO Clutch Electrical Specification
Chart.
Resistance (OHMs)
3.05 ± 5%
The TVS Diode protects the electrical system from current surges caused by
PTO engagement and disengagement.
g322161
No testing procedure available. If the diode is suspected to be faulty, replace the
diode. If the system fuse blows each time the clutch is engaged, the TVS diode
is more than likely shorting clutch power to ground.
The magnento stop relay grounds the magneto when the key is turned to the
"OFF" position. When the key is turned to the "RUN" position, the solenoid is
AMP Draw
3.93
Figure 95
Page 8–11
Continuity to Ground
OPEN
Electrical: Service and Repairs