Troubleshooting Chart - Toro Multi Pro 1200 Service Manual

Troubleshooting Chart

The chart that follows contains suggestions that can be
used to assist in diagnosing Sonic Boom System perfor-
mance issues. These suggestions are not all--inclusive.
Also, consider that there may be more than one cause
for a machine problem.
Problem
Sonic boom light is not illuminated.
LED on one of the sonic boom sen-
sors is not illuminated.
LED on both of the sonic boom sen-
sors is not illuminated.
One of the boom actuators will not
retract.
Neither of the boom actuators will
retract.
Sonic Boom System (Optional Kit)
NOTE: When troubleshooting an electrical problem on
your Sonic Boom System, refer to information regarding
the sonic boom light in this section. Also, use the Diag-
nostic Display (see Special Tools in this chapter) to test
electronic control unit (ECU) inputs and outputs.
Possible Cause
Sonic mode switch is in the OFF position.
5 amp or 10 amp fuse in sonic boom fuse block is faulty.
Electrical power from vehicle is not available (all sonic boom func-
tions are affected).
Sonic boom light or circuit wiring is faulty.
Sonic mode switch or circuit wiring is faulty.
Sonic boom sensor or circuit wiring is faulty.
Sonic mode switch is in the OFF position.
5 amp fuse in sonic boom fuse block is faulty.
Sonic mode switch or circuit wiring is faulty.
30 amp auto resetting fuse for affected boom actuator is faulty.
Power switch relay or circuit wiring for affected boom actuator is
faulty.
One or both of the H--bridge relays or circuit wiring for the affected
boom actuator is faulty.
Boom actuator switch or circuit wiring for affected boom actuator is
faulty.
Affected boom actuator or circuit wiring is faulty.
Loop back connector is unplugged from wire harness connector.
5 amp or 10 amp fuse in sonic boom fuse block is faulty.
Electrical power from vehicle is not available (all sonic boom func-
tions are affected).
Both of the boom actuator 30 amp auto resetting fuses are faulty.
ECU or circuit wiring is faulty.
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