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ELECTRICAL SYSTEM AND TESTING
Troubleshooting
Page 11-30
2008-2011 IQ System Electric Vehicle Maintenance and Service Supplement
11
4. Place a jumper wire with an alligator clip between the B– terminal of the speed controller (use alligator
clip for this connection) and pin 7 (orange/white wire) of the 16-pin connector
See following CAUTION.
CAUTION
• Do not fully insert probes into the 16-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.
7. The reverse buzzer should sound when the Tow/Run switch is in the RUN position.
8. If any other activity is observed, check the following items:
•
Continuity of the wires in the wire harness
•
Reverse buzzer for proper operation.
See Test Procedure 16 – Reverse Buzzer on page 11-39.
•
Tow/Run switch for proper operation.
See Test Procedure 6 – Tow/Run Switch on page 11-21.
Test Procedure 9E – Pins 8 and 16
See General Warning, Section 10, Page 10-1.
Pins 8 and 16 in the 16-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 8 when the For-
ward/Reverse switch is in the FORWARD position and provides a +48 volt signal on pin 16 when the Forward/
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 10-2.
3. Disconnect the 16-pin connector at the speed controller.
4. Set a multimeter to 200 volts DC, insert the red (+) probe of the multimeter into pin 8 (brown wire) of the
16-pin connector.
See following CAUTION.
Using an alligator clip, connect the black (–) probe to the B–
terminal of the speed controller
Figure 11-17 Pin 7 Test
SPEED CONTROLLER