Taylor-Dunn B0-T48-48 Taylor Truck T48 Operation Manual page 113

TEST 3.3:
Place the forward and reverse switch in the REVERSE
direction.
Test the voltage at pin #3 on the 12 pin logic card
connector.
If the voltage is low, then skip ahead to test #3.4.
If the voltage is high, then skip ahead to Test #7.
TEST 3.4:
Test the voltage at pin #2 on the 12 pin logic card
connector.
If the voltage is high, then refer to note at bottom
of page.
If the voltage is low, then skip ahead to Test #7.
Electrical Troubleshooting
Section 4 Page 11