11
Test Procedures
IQ SYSTEM TROUBLESHOOTING
TEST PROCEDURE 12 – Pin 6
See General Warnings on page 1-1.
Pin 6 in the 16-pin connector provides a connection point for the throttle position sensor limit switch to the speed
controller. A 48 volt signal is sent through this wire when the accelerator pedal is pressed, completing the circuit inside
the throttle position sensor. To test this wire,
see Test Procedure 8 – Key Switch and Throttle Position Sensor
Limit Switch Circuit on page 11-20
.
TEST PROCEDURE 13 – Pin 7
See General Warnings on page 1-1.
Pin 7 in the 16-pin connector provides a connection point for the reverse buzzer to the speed controller.
1.
Disconnect the battery cables and discharge the controller as instructed.
See WARNINGS “To avoid
unintentionally starting...” and “After disconnecting the batteries, wait 90 seconds...” in General
Warnings on page 1-1.
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 rails just forward of each spring mount.
See WARNING “Lift only one end...” in
General Warnings on page 1-1.
3.
Disconnect the 16-pin connector at the speed controller.
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
(Figure 11-12, Page 11-25)
.
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 24 – Reverse Buzzer on page 11-33.
– Tow/Run switch for proper operation.
See Tow/Run Switch on page 11-17.
Page 11-24
2009 Electric Precedent Maintenance and Service Manual