ELECTRICAL SYSTEM AND TESTING
Troubleshooting
Page 11-42
2006 IQ Plus System Electric Vehicle Maintenance and Service Supplement
11
4. Place the black (–) probe on the blue wire terminal 1 position on the rocker switch and place the red (+)
probe on the orange wire terminal. With the switch in REVERSE, there should be continuity. If the read-
ings are incorrect, replace the switch.
TEST PROCEDURE 17 – REVERSE BUZZER
See General Warning, Section 10, Page 10-1.
1. Disconnect the battery cables as instructed.
See WARNING “To avoid unintentionally starting...” in
General Warning, Section 10, Page 10-1.
2. Remove the center dash:
2.1. Remove the plastic cap covering the screw on each side of the center dash panel. Loosen, but do
not remove, these screws.
2.2. Insert screwdriver at the top center of the dash between dash and cowl brace. Gently pry center
dash out from under edge of cowl brace.
2.3. Pull dash out approximately one inch (2.5 cm) from the frame and then bend the top right corner
of the dash inward while pulling the top of the panel out and down.
See following NOTE.
NOTE: Bending the top right corner of the center dash inward during removal will prevent the contacts on
the back of the key switch from touching the metal frame around the dash.
2.4. Slide the dash panel up the steering column by snapping the top out and then rotating the panel out
and up.
2.5. Disconnect the orange/white and red wires from the reverse buzzer. Make sure the wire terminals
on the key switch do not touch vehicle frame.
3. 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).
4. Place the Tow/Run switch in the RUN position.
5. Set a multimeter to 200 volts DC. Place the black (–) probe on battery no. 8 negative post and place the
red (+) probe on the red wire terminal end that was disconnected from the reverse buzzer. The reading
should be approximately 48 volts (full battery voltage).
5.1. If the voltage reading is correct, proceed to step 6.
5.2. If reading is zero volts, check red wire continuity and Tow/Run switch.
Onboard Computer Solenoid Lockout Circuit on page 11-16.
See also Test Procedure 6 –
5.3. If the continuity readings are not correct, repair or replace the red wire.
5.4. If the continuity readings are correct, proceed to step 6.
6. Place the Forward/Reverse switch in REVERSE. Using a multimeter set to 200 volts DC, place the black
(–) probe on the orange/white wire terminal end (that was disconnected from the reverse buzzer) and
place the red (+) probe on battery no. 1 positive post. The reading should be approximately 48 volts (full
battery voltage).
6.1. If the voltage reading is correct, replace the reverse buzzer.
6.2. If reading is zero volts, check orange/white wire continuity and connection at Pin 19 in 24-Pin con-
nector.
6.3. If there is no continuity in the orange/white wire, or the Pin 19 terminal in the 24-Pin connector is
not properly seated, repair or replace as required.
6.4. If the orange/white wire continuity and 24-Pin connector are correct and there is no voltage at the
orange wire, replace the controller.
