Electrical Troubleshooting
Section 4
Page 24
Connect a volt meter from battery negative to the Violet/Black wire at the electric brake harness
plug.
If the voltage is less than battery volts then:
•
Check wiring to the key switch and continue troubleshooting at test #4.2.
If the voltage equals battery volts then:
Connect a volt meter across the Violet/Black wire and the Blue wire at the electric brake harness
plug. The voltage should start at approximately 24 volts, then drop to approximately 15 volts
after about 0.5 seconds.
If the test is good then:
•
The pigtail harness to the electric brake is broken or the electric brake has failed. Remove
the brake and repair or replace as required.
If the test is bad then:
Connect a volt meter across the Violet/Black wire at the
electric brake harness plug and Pin #9 at the logic card
connector. The voltage should start at approximately 24
volts, then drop to approximately 15 volts after about
0.5 seconds.
If the test is good then:
• The blue wire from the electric brake harness plug
to pin #9 on the logic card connector is broken.
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.
If the test is bad then:
• The logic card is not releasing the brake. This
could be a result of:
-Improper operation of the vehicle.
- fault in the vehicles wiring or switches.
-A fault in the speed controller.
-Incorrect programming.
-A failed speed controller.
Disconnect the electric brake harness connector and connect the electric brake to a 24-volt source.
This should release the brake and allow you to troubleshoot the vehicles control system. Return
to the beginning of the troubleshooting section and continue.
If the brake does not release then:
•
The electric brake has failed. Remove the brake and repair or replace the brake as required.
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.
The electric brake is part of the vehicle braking system. Do not operate
a vehicle with the electric brake bypassed or disabled unless the
system is being tested for faults. Operating a vehicle with the brake
bypassed or disabled may result in severe personal injury or property
damage.
Summary of Contents for B0-T48-48 Taylor Truck T48
Page 2: ......
Page 4: ......
Page 10: ......
Page 11: ...INTRODUCTION Operator and Maintenance Manual...
Page 16: ...INTRODUCTION PAGE vi MB T48 01...
Page 17: ...SECTION 1 Vehicle Description and Specifications...
Page 23: ...SECTION 2 Safety Rules and Operational Information...
Page 37: ...SECTION 3 Maintenance and Service Procedures...
Page 43: ...SECTION 3 PAGE 7 MB T48 01 Hydraulic Disc Brakes...
Page 52: ...SECTION 3 PAGE 16 MB T48 01 PARKING BRAKE...
Page 54: ...SECTION 3 PAGE 18 MB T48 01 FRONT AXLE AND YOKES...
Page 70: ...SECTION 3 PAGE 34 MB T48 01...
Page 71: ...SECTION 3 PAGE 35 MB T48 01 DRIVE SERVICE...
Page 87: ...SECTION 3 PAGE 51 MB T48 01 SPEED CONTROLLER...
Page 89: ...SECTION 3 PAGE 53 MB T48 01 DRIVE MOTOR...
Page 97: ...SECTION 3 PAGE 61 MB T48 01 BATTERY...
Page 102: ...SECTION 3 PAGE 66 MB T48 01...
Page 150: ...Electrical Troubleshooting Section 4 Page 37...
Page 154: ...SECTION 5 PAGE 4 MB T48 01 1 2 3 4 STEERING SLEEVE ASSEMBLY 5 1 5...
Page 156: ...SECTION 5 PAGE 6 MB T48 01 FRONT SUSPENSION 1 5 6 3 4 2 5...
Page 158: ...SECTION 5 PAGE 8 MB T48 01 1 2 3 4 DRAG LINK 2 5 1 5...
Page 160: ...SECTION 5 PAGE 10 MB T48 01 STEERING GEAR 1 2 3 4 5 6 11 12 13 15 17 16 14 10 9 8 7...
Page 162: ...SECTION 5 PAGE 12 MB T48 01 STEERING COLUMN ASSEMBLY 1 2 3 4 5 6 7 9 8 12 10 11 13 14...
Page 164: ...SECTION 5 PAGE 14 MB T48 01 MASTER CYLINDER BRAKE LINE HARDWARE AND FRONT BRAKE ASSSEMBLY...
Page 166: ...SECTION 5 PAGE 16 MB T48 01 MASTER CYLINDER 2 3 4 1 5 6 7 8...
Page 168: ...SECTION 5 PAGE 18 MB T48 01 HYDRAULIC DISC BRAKES 1 2 8 6 5 4 3 2 1 1 1 1 3 7 1 0 9 14 1 5 1 6...
Page 170: ...SECTION 5 PAGE 20 MB T48 01 PARK BRAKE LINKAGE 9 8 6 1 1 7 1 2 3 1 1 1 0 4 5...
Page 172: ...SECTION 5 PAGE 22 MB T48 01 1 0 9 8 1 1 7 6 3 2 1 6 4 5 MOTOR...
Page 178: ...SECTION 5 PAGE 28 MB T48 01 CONTROL PANEL 1 2 4 5 6 7 3 8...
Page 180: ...SECTION 5 PAGE 30 MB T48 01 1 2 4 6 8 ELECTRICAL COMPONENTS TYPICAL 10 3 5 9 7 11...
Page 186: ...SECTION 5 PAGE 36 MB T48 01 ACCELERATOR MODULE 1 8 2 3 4 5 6 7...
Page 196: ...SECTION 5 PAGE 46 MB T48 01 1 2 4 3 5 6 DECALS 7...
Page 198: ...SECTION 5 PAGE 48 MB T48 01 HITCH OPTIONS...
Page 200: ...SECTION 5 PAGE 50 MB T48 01...
Page 201: ...SECTION 5A Illustrated Parts List Taylor Truck...
Page 202: ...SECTION 5A PAGE 2 MB T48 01 STANDARD PARTS...
Page 204: ...SECTION 5A PAGE 4 MB T48 01 OPTIONAL PARTS...
Page 206: ...SECTION 5A PAGE 6 MB T48 01 OPTIONAL PARTS...
Page 208: ...SECTION 5A PAGE 8 MB T48 01 OPTIONAL PARTS...
Page 210: ...SECTION 5A PAGE 10 MB T48 01 TOP COVER OPTION PARTS...
Page 212: ...SECTION 5A PAGE 12 MB T48 01 DOOR OPTIONS...
Page 214: ...SECTION 5A PAGE 14 MB T48 01 DECKBOARD OPTIONS...
Page 216: ...SECTION 5A PAGE 16 MB T48 01 BOX WITH DOORS OPTIONS...
Page 218: ...SECTION 5A PAGE 18 MB T48 01 STAKE SIDE OPTIONS...
Page 220: ...SECTION 5A PAGE 20 MB T48 01...
Page 221: ...SECTION 5B Illustrated Parts List ET 3000...
Page 222: ...SECTION 5B PAGE 2 MB T48 01 1 2 7 8 3 4 5 5a 9 11 12 13 14 16 10 STANDARD PARTS 6 18 17 15...
Page 224: ...SECTION 5B PAGE 4 MB T48 01 STANDARD PARTS 3 4 5 6 1 2 Door Latch 9 8 7...
Page 230: ...SECTION 5B PAGE 10 MB T48 01 BOX WITH DOORS OPTIONS...
Page 232: ...SECTION 5B PAGE 12 MB T48 01...
Page 233: ...APPENDIX A Special Tools...
Page 235: ...APPENDIX B...
Page 239: ......