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ELECTRICAL SYSTEM AND TESTING
Troubleshooting
Page 11-32
2008-2011 IQ Plus Electric Vehicle Maintenance and Service Supplement
11
Test Procedure 10E – Pins 10 and 11
See General Warning, Section 10, Page 10-1.
Pins 10 and 11 in the 24-pin connector provide a connection point for the Forward/Reverse rocker switch to
the speed controller. The switch provides a +48 volt signal to the speed controller through pin 10 when the
Forward/Reverse switch is in the FORWARD position and provides a +48 volt signal on pin 11 when the For-
ward/Reverse switch is in the REVERSE position.
1. Disconnect the batteries and discharge the controller.
See Disconnecting The Batteries on page 10-3.
2. Place chocks at the front wheels and lift the rear of the vehicle with a chain hoist or floor jack. Position
jack stands under the frame crossmember between the spring mount and side stringer, just forward of
each rear wheel.
See WARNING “Lift only one end...” in General Warning, Section 10, Page 10-1.
3. Disconnect the 24-pin connector at the speed controller.
4. Set a multimeter to 200 volts DC, insert the red (+) probe of the multimeter into pin 10 (brown wire) of the
24-pin connector.
See following CAUTION.
Using an alligator clip, connect the black (–) probe to the B–
terminal of the speed controller
CAUTION
• Do not fully insert probes into the 24-pin plug. Doing so can result in a poor connection.
5. Place the Tow/Run switch in the TOW position and connect the battery cables, positive (+) cable first.
Tighten battery terminals to 110 in-lb (12.4 N·m).
6. Place the Tow/Run switch in the RUN position and the Forward/Reverse switch in the NEUTRAL posi-
tion. The multimeter should indicate zero volts DC at this time.
7. While monitoring the multimeter, place the Forward/Reverse switch in the REVERSE position. The mul-
timeter should still indicate zero volts.
Figure 11-21 Test: Pin 19 (Orange/White Wire)
Detail:
Front of 24-Pin Connector