ELECTRICAL SYSTEM AND TESTING
Troubleshooting
Page 11-28
2008-2011 IQ Plus Electric Vehicle Maintenance and Service Supplement
11
Test Procedure 10B – Pin 2
See General Warning, Section 10, Page 10-1.
Pin 2 in the 24-pin connector provides a connection point for the solenoid lockout circuit from the onboard
computer to the speed controller.
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 2 (light blue 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.
7. The multimeter should indicate zero volts DC at this time.
8. While monitoring the multimeter, plug the battery charger into the vehicle charger receptacle.
9. After a short delay, the onboard computer should power-up (come out of sleep mode), charger relay
should click, and the ammeter on the charger should indicate that the vehicle batteries are being
charged.
10. The multimeter should indicate zero volts DC while the charger is connected to the vehicle.
11. While observing the multimeter, disconnect the DC plug from the vehicle charger receptacle.
12. The multimeter should indicate full battery voltage when the charger is not connected to the vehicle.
13. If any other reading is obtained, check the following items:
•
Continuity of the wires in the wire harness
•
Onboard computer for proper operation.
See Test Procedure 12 – Onboard Computer Gray Wire
•
Tow/Run switch for proper operation.