TABLE OF CONTENTS FOR SECTION ‘F’
SECTION TITLE
PAGE NO.
ELECTRONIC SPEED CONTROL
Page F-i
Repair and Service Manual
OPERATION ............................................................................................................. F - 2
Pedal Box......................................................................................................... F - 3
Speed Sensor .................................................................................................. F - 3
Controller ......................................................................................................... F - 3
GENERAL TROUBLESHOOTING............................................................................. F - 3
Symptoms ........................................................................................................ F - 4
Testing ............................................................................................................. F - 4
Testing Battery Voltage.................................................................................... F - 4
Continuity Check.............................................................................................. F - 4
Testing a Switch for Continuity......................................................................... F - 5
Testing a Solenoid for Continuity ..................................................................... F - 5
TROUBLESHOOTING DIAGRAMS........................................................................... F - 6
INDUCTIVE THROTTLE SENSOR (ITS) TESTING AND REPLACEMENT ............ F - 14
CONTROLLER REPLACEMENT ............................................................................ F - 17
SOLENOID REPLACEMENT .................................................................................. F - 17
LIST OF ILLUSTRATIONS
Fig. 1 Performance Characteristics....................................................................... F - 1
Fig. 2 Run-Tow/Maintenance Switch .................................................................... F - 2
Fig. 3 Access to Pedal Box................................................................................... F - 3
Fig. 4 Controller and Solenoid .............................................................................. F - 3
Fig. 5 Battery Reference Voltage.......................................................................... F - 5
Fig. 6 Continuity Check of Switch ......................................................................... F - 5
Fig. 7 Continuity Check of Solenoid...................................................................... F - 6
Fig. 8 48 volt Fault Codes..................................................................................... F - 7
Fig. 9 Controller Connectors and Connections ..................................................... F - 8
Fig. 10 48 Volt Wiring Diagram............................................................................. F - 9
Fig. 11 J-1 Pin Connector Diagnostics................................................................ F - 10
Fig. 12 J-1 Pin Connector Diagnostics (Continued) ............................................ F - 11
Fig. 13 J-2 Pin Connector Diagnostics................................................................ F - 12
Fig. 14 Secondary Wiring Diagnostics ................................................................ F - 13
Fig. 15 ITS and Plunger...................................................................................... F - 14
Fig. 16 ITS Adjustment (Sheet 1 of 2)................................................................. F - 15
Fig. 17 ITS Adjustment (Sheet 2 of 2)................................................................. F - 16
Fig. 18 Controller Wiring..................................................................................... F - 18