Check Procedure 1-Battery / Voltage Check; Check Procedure 2--Accelerator Signal Voltage; Check Procedure 3-- Motor Voltage At A1 And A2 - Tomberlin 2010 E-Merge Maintenance Manual

Check Procedure 1—Battery / voltage check
NOTE: to perform the following check procedures, the battery should be maintained properly and
charged fully.
Use a DC multimeter set to 200V, connect the black (-) probe to the negative output binding post of the
battery and connect the red (+) probe to the positive wire of the battery.

Check Procedure 2--Accelerator signal voltage

Please refer to Chapter 1 Protection for Electrical Safety.
1. Use a DC multimeter set to 20V, connect the black (-) probe to the negative binding post of the
battery and connect the red (+) probe to Wire 7 (black/white wire). The reading should be around 0V
at the original position of the pedal. Press down the accelerator pedal slowly; observe the reading
on the multimeter. When the pedal is pressed, the reading should be increased by 0V-5V until the
pedal is pressed down completely.
2. If the reading is not increased while pressing the pedal, the accelerator should be replaced.
3. If the reading is lower than 4.5V when the pedal is pressed down completely, the electric vehicle can
not run at the rated max speed. Please check whether the accelerator is in good condition.

Check Procedure 3-- Motor voltage at A1 and A2

Please refer to Chapter 1 "Protection for Electrical Safety".
1．Jack up the rear axle of the electric vehicle so that the rear wheels are in the air.
2. Check that the battery is wired correctly, then connect the black (-) probe of a multimeter set at
200V DC to motor terminal A2 and connect the red probe (+) to motor terminal A1.
3. With TOW/RUN switch on position RUN, turn the Switch Forward/Reverse to FORWARD, then
press the accelerator pedal slowly.
4. While the accelerator pedal is pressed, the voltage reading should be increased from 5V when the
accelerator pedal switch is closed to 48V when the accelerator pedal is pressed down completely.
4.1 If no voltage reading is displayed, check the accelerator. Refer to "Check Procedure
2--Accelerator voltage".
4.2 Disconnect the battery cable according to the directions. Please refer to Chapter 1 "Protection
for Electrical Safety".
4.3 Check the continuity of motor binding posts A1, A2 and F1, F2. In addition, check all motor
wires for continuity. Refer to "Motor" in Chapter 12.
Troubleshooting
MERGE 10-4
Chapter 10