Taylor-Dunn B0-T48-48 Manual page 138

Electrical Troubleshooting
TEST 4:
Accelerator pedal released.
Test the voltage from pin #9 to pin #1.
If the voltage is below 0.3 volts, then skip ahead
to test #5.
If the voltage is above 0.3 volts, then the module
has failed and must be replaced.
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 5a:
Test the voltage from pin #5 to pin #9.
Accelerator pedal released.
If the voltage is low then skip ahead to test 5b.
If the voltage is high then then the module 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.
TEST 5b:
Accelerator pedal depressed.
If the voltage equals battery volts, then skip ahead to test #6.
If the voltage does not equal battery volts, then the module has failed or the accelerator
pedal return spring on the module 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.
Troubleshooting Page 8