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ELECTRICAL SYSTEM TROUBLESHOOTING: IQ
PLUS ELECTRIC VEHICLES
Figure 12-12 Test 13: Speed Sensor Red Wire
5.
Check voltage at the light green wire:
5.1.
Set a multimeter to 20 volts DC. Place the black (–) probe on the battery no. 8 negative post and place the
red (+) probe on the light green wire female terminal in the three-pin connector at the motor speed sensor.
The voltage reading should be from 4.60 to 5.00 volts.
5.2.
If the voltage is zero volts, check the continuity of the light green wire from the 24-pin connector at the
speed controller to the three-pin connector at the motor speed sensor. If the continuity is correct, replace
the speed controller.
5.3.
If reading is below 3.50 volts, check the continuity of the wires and plug and replace the speed controller if
necessary.
Figure 12-13 Test 13: Speed Sensor Light Green Wire
6.
Reconnect the three-pin connector at the motor speed sensor. Using a multimeter set to 20 volts DC, place the
black (–) probe on the battery no. 8 negative post and place the red (+) probe (with insulation-piercing probe) on
the green wire between the three-pin connector and the motor speed sensor.
2015 Carryall 500 and 700 Maintenance and Service Manual
12
Test Procedures
Page 12-31
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Table of Contents
Troubleshooting
