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Sevcon Troubleshooting
Page 6
Electrical Troubleshooting
TEST 1.5:
Test the voltage at pin #4 on the 12-pin logic card
connector.
If the voltage is high, then skip ahead to Test
#1.6.
If the voltage is low, then skip ahead to Test
#6.
TEST 1.6:
Test the voltage at pin #7 on the 12-pin logic card
connector.
NOTE: Pin #7 is for a parking brake interlock switch.
This switch is not available for all vehicles
and may not be used.
If the voltage is high, then skip ahead to Test
#1.7.
If the voltage is low, then:
•
Check the park brake switch for shorted
contacts.
•
Check the wire to the park brake switch for
short circuits to B-.
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 1.7:
Depress the accelerator pedal to engage FS-1 only
(creep speed).
Perform the following tests:
Test the voltage at pin #10 on the 12-pin logic card
connector.
If the voltage is below 0.3 volts, then skip
ahead to Test #1.8.
If the voltage is above 0.3 volts, then skip
ahead to Test #6
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.
TEST 1.8:
Test the voltage at pin #4 on the 12-pin logic card
connector.
If the voltage is low, then skip ahead to Test
#1.9.
If the voltage is high, then skip ahead to Test
#6.
TEST 1.9:
Depress the accelerator pedal fully.
Test the voltage at pin #10 on the 12-pin logic card
connector.
If the voltage is between 4.8 and 5.1 volts,
then skip ahead to Test #2.
If the voltage is
not
between 4.8 and 5.1 volts,
then skip ahead to Test #6.
Summary of Contents for B0-T48-48 Taylor Truck T48
Page 2: ......
Page 12: ...Model B 1 00...
Page 58: ...Maintenance Service and Repair Steering Page 14 Exploded View of Steering Gear...
Page 76: ...TAYLOR DUNN...
Page 94: ...TAYLOR DUNN...
Page 102: ...TAYLOR DUNN...
Page 116: ...TAYLOR DUNN...
Page 119: ...Sevcon Troubleshooting Page 3 Electrical Troubleshooting Identifying Your Controller...
Page 138: ...Sevcon Troubleshooting Page 22 Electrical Troubleshooting...
Page 158: ...Battery Charger Page 20 MN 402 000...
Page 161: ...Wire Diagrams Wire Diagrams Page 3...
Page 166: ...Illustrated Parts Parts Page 4 Front Brakes...
Page 168: ...Illustrated Parts Parts Page 6 Steering Linkage...
Page 170: ...Illustrated Parts Parts Page 8 Steering Column 1 2 3 4 5 6 7 9 8 12 10 11 13 14...
Page 172: ...Illustrated Parts Parts Page 10 Steering Gear 9 15 16 10 2 3 14 17 12 11 13 6 8 7 5 1 4...
Page 174: ...Illustrated Parts Parts Page 12 Front Suspension...
Page 176: ...Illustrated Parts Parts Page 14 Transmission Gear Case...
Page 178: ...Illustrated Parts Parts Page 16 Transmission Differential Case...
Page 182: ...Illustrated Parts Parts Page 20 Rear Brakes Brake Body...
Page 186: ...Illustrated Parts Parts Page 24 Motor...
Page 190: ...Illustrated Parts Parts Page 28 Master Cylinder 2 3 4 1 5 6 7 8...
Page 192: ...Illustrated Parts Parts Page 30 Brake Lines...
Page 194: ...Illustrated Parts Parts Page 32 Brake Linkage parking brake...
Page 196: ...Illustrated Parts Parts Page 34 Wheels and Tires Ref wheel hub 1 2 3...
Page 200: ...Illustrated Parts Parts Page 38 Speed Control Panel...
Page 202: ...Illustrated Parts Parts Page 40 Miscellaneous Frame and Body...
Page 210: ...Illustrated Parts Parts Page 48 Decals 1 2 4 3 5 6 7...
Page 212: ...Illustrated Parts Parts Page 50 Strobe Light...
Page 214: ...Illustrated Parts Parts Page 52 Steel Cab T48 Page 1...
Page 216: ...Illustrated Parts Parts Page 54 Steel Cab T48 Page 2...
Page 218: ...Illustrated Parts Parts Page 56 Tops T48...
Page 220: ...Illustrated Parts Parts Page 58 Doors T48...
Page 222: ...Illustrated Parts Parts Page 60 Optional Deckboards T48...
Page 224: ...Illustrated Parts Parts Page 62 Cargo Box...
Page 226: ...Illustrated Parts Parts Page 64 Stake Sides...
Page 230: ...Illustrated Parts Parts Page 68 3 4 5 6 1 2 Door Latch 9 8 7 Cab Components ET 3000...
Page 234: ...TAYLOR DUNN...