13
Test Procedures
IQ DISPLAY MODULE (IQDM) AND IQDM-P
DIAGNOSTICS: IQ SYSTEM
3.
The multimeter should indicate continuity on only one pin. If any other reading is obtained, the adaptor must
be replaced.
4.
Repeat the procedure three more times, each time with the red (+) probe inserted into a different terminal on the
end of the adaptor with the square plug.
TEST PROCEDURE 3 – IQDM Ports
Inspect the IQDM ports for damage or corrosion.
IQDM PORT (LOCATED UNDER INSTRUMENT PANEL)
See General Warnings on page 1-1.
1.
Turn the key switch to the OFF position, place the Forward/Reverse rocker switch in the NEUTRAL position,
and lock the park brake.
2.
Place the Tow/Run switch in the TOW position, disconnect the batteries, negative (–) cable first, and wait 90
seconds for the speed controller capacitors to discharge.
See General Warnings on page 1-1.
3.
Check the IQDM port mounted under the instrument panel.
3.1. Remove the three screws (1) that secure the instrument panel assembly (2) to the dash assembly (3)
(Figure 13-7, Page 13-20)
.
3
1
2
4
5
700
Figure 13-7
Instrument Panel Assembly Removal and IQDM Port Connection
3.2. Disconnect the four-pin connectors (4 and 5) and visually inspect the contacts for damage and corrosion.
Inspect the IQDM port, mounted under the instrument panel assembly (2). Repair and replace parts as
necessary.
3.3. If no problem is found, connect the four-pin connectors and install the instrument panel assembly.
3.4. Install the three screws (1) that secure the instrument panel assembly (2) to the dash assembly (3)
(Figure 13-7, Page 13-20)
.
4.
Check the IQDM port on the speed controller.
4.1. 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.
4.2. Remove electronics module cover.
See Electronics Module Cover on page 15-5.
.
4.3. Connect IQDM to controller
4.3.1. Disconnect the square four-pin connector (3) from the speed controller.
Page 13-20
2009 Electric Precedent Maintenance and Service Manual