Sevcon Troubleshooting
Page 12
Electrical Troubleshooting
Test 6. ACCELERATOR MODULE FAULT
With the power switch OFF, connect the throttle
module to the analyzer.
Position the power switch to the 0-5 volt range.
All but the power lamp should be OFF. If the
FS-1, FS-3 or OV lamp (Over Voltage) are ON,
then the module is faulty.
Depress the lever on the module. The FS-1
lamp should be ON with no more that a few
degrees of rotation. If the FS-1 lamp does not
come on, then the module is faulty (see note
below).
The voltage on the digital display should vary
with the position of the module arm, starting at
0-volts and ending at approximately 5-volts.
If the OV lamp comes ON at any time, then the
module is faulty.
If the Low battery lamp is ON, then the analyzer
battery should be replaced.
Additional information regarding the analyzer
can be found in the instructions provided with
the analyzer (D0-110-53)
Disconnect both of the battery leads during any maintenance or
before disconnecting any electrical component or wire. Failure to do
so may cause property damage and/or serious bodily injury.
1. Make sure the key-switch is in the “OFF” position, then remove the key.
2. Place the forward-reverse switch in the center “OFF” position.
3. Set the park brake.
4. Place blocks under the front wheels to prevent vehicle movement.
NOTE: Failures of the FS-1 circuit indicate a possible vehicle wiring fault that has
resulted in a short circuit across FS-1. BEFORE REPLACING THE
MODULE: Confirm that there are no shorts in the vehicle wiring or
components. Installing a replacement module in a vehicle with faulty wiring
will burn out the new module.
Summary of Contents for B0-254-48
Page 2: ......
Page 18: ...TAYLOR DUNN...
Page 74: ...Maintenance Service and Repair Steering Page 22 Exploded View of Steering Gear...
Page 100: ...TAYLOR DUNN...
Page 136: ...TAYLOR DUNN...
Page 142: ...TAYLOR DUNN...
Page 154: ...TAYLOR DUNN...
Page 157: ...Sevcon Troubleshooting Page 3 Electrical Troubleshooting Identifying Your Controller...
Page 176: ...TAYLOR DUNN...
Page 194: ...Illustrated Parts Parts Page 2 Steering Knuckle...
Page 196: ...Illustrated Parts Parts Page 4 Front Brakes Brake body 9 above...
Page 198: ...Illustrated Parts Parts Page 6 Steering Linkage...
Page 206: ...Illustrated Parts Parts Page 14 Transmission Gear Case...
Page 210: ...Illustrated Parts Parts Page 18 Rear Brakes Brake body 8 above...
Page 212: ...Illustrated Parts Parts Page 20 Master Cylinder Brake linkage Linkage at the brake caliper...
Page 214: ...Illustrated Parts Parts Page 22 Brake Lines...
Page 216: ...Illustrated Parts Parts Page 24 Rear Suspension View from rear...
Page 218: ...Illustrated Parts Parts Page 26 Motor Rear Motor Mount...
Page 220: ...Illustrated Parts Parts Page 28 Instrument Panel dash...
Page 232: ...TAYLOR DUNN...
Page 233: ...APPENDIX A Special Tools...
Page 242: ...Model B 1 00...
Page 243: ......