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Sevcon Troubleshooting
Page 15
Electrical Troubleshooting
Test 7. FORWARD AND REVERSE SWITCH FAULT
Turn the key switch ON, place the forward and reverse switch in the center OFF position and
perform the following tests:
TEST 7.1:
Referencing battery positive, test the voltage on the center
terminal of the F&R switch (Black wire).
If the voltage equals battery volts, then skip ahead to
test #7.2.
If the voltage does not equal battery volts, then check
the wire from the F&R switch to the battery voltage circuit
breaker.
Stop trouble shooting here and repair the problem. When
the repair is completed, completely retest the vehicle before
lowering the drive wheels to the ground.
TEST 7.2:
If the vehicle does not travel in reverse, skip ahead to
test #7.3.
Place the forward and reverse switch in the FORWARD
position.
Referencing battery positive, test the voltage at the Blue/Black
wire on the F&R switch.
If the voltage equals battery volts, skip ahead to test
#7.4.
If the voltage does not equal battery volts, then the F&R
switch has failed.
Stop trouble shooting here and repair the problem. When
the repair is completed, completely retest the vehicle before
lowering the drive wheels to the ground.
After any repairs are made, completely retest
the vehicle before lowering the drive wheels to
the ground. Failure to retest the vehicle could
result in unexpected movement of the vehicle
resulting in injury or property damage.
This troubleshooting guide is written in
sequential order. All tests must be performed in
the order that they are written. Starting in the
middle or skipping sections when not instructed
to do so may lead to invalid test results.
Summary of Contents for TT-316-36
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Page 99: ...Sevcon Troubleshooting Page 3 Electrical Troubleshooting Identifying Your Controller...
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Page 138: ...Illustrated Parts Page 2 Front Fork...
Page 140: ...Illustrated Parts Page 4 Front Brakes...
Page 142: ...Illustrated Parts Page 6 Tilt Steering Column and Gear...
Page 146: ...Illustrated Parts Page 10 Transmission Differential Case Rear Axle...
Page 148: ...Illustrated Parts Page 12 Rear Brakes Master Cylinder 8 Brake Body...
Page 150: ...Illustrated Parts Page 14 Rear Suspension...
Page 152: ...Illustrated Parts Page 16 Motor...
Page 156: ...Illustrated Parts Page 20 Brake Lines...
Page 158: ...Illustrated Parts Page 22 Wheels and Tires Ref wheel hub 1 2 5 assembly 4 3 6 7 8 9 10...
Page 164: ...Illustrated Parts Page 28 Miscellaneous Frame and Body...
Page 168: ...Illustrated Parts Page 32 Decals...
Page 172: ...TAYLOR DUNN...