ELECTRICAL SYSTEM AND TESTING
Troubleshooting
2008-2011 IQ Plus Electric Vehicle Maintenance and Service Supplement
Page 11-21
11
TEST PROCEDURE 5 – A1 AND A2 MOTOR VOLTAGE
See General Warning, Section 10, Page 10-1.
1. 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.
2. With the batteries connected and using a multimeter set to 200 volts DC, place the black (–) probe on
the A2 (1) motor terminal (white wire) and connect the red (+) probe to the A1 (2) motor terminal (green
wire)
3. With Tow/Run switch in the RUN position, place the Forward/Reverse switch in the FORWARD position,
turn key switch to the ON position and slowly press accelerator pedal.
4. As the accelerator pedal is pressed, the voltage reading should increase from approximately 5 volts
when the MCOR limit switch closes, to approximately 32-37 volts with the accelerator pedal fully
pressed.
4.1. If there is no voltage reading or if there is no increase in voltage as the pedal is pressed, check the
MCOR.
See Test Procedure 4 – MCOR Voltage on page 11-18.
Also check the continuity of the
large posts of the solenoid.
See Test Procedure 15 – Solenoid Contacts on page 11-41.
4.2. Disconnect the batteries and discharge the controller.
See Disconnecting The Batteries on
4.3. Check continuity on A1 and A2 motor terminal posts and continuity of the F1 and F2 motor terminal
posts. Also, check continuity of all motor wires.
See Section 16 – Motor (Model DA5-4006).
TEST PROCEDURE 6 – TOW/RUN SWITCH
See General Warning, Section 10, Page 10-1.
Tow/Run Switch Test with the IQDM Handset
1. With the Tow/Run switch in the RUN position, connect the IQDM to the vehicle.
2. Immediately after the IQDM is connected to the vehicle, the screen should display a copyright notice and
the IQDM model number.
3. If the IQDM display screen is blank, drive the vehicle a short distance to activate the onboard computer.
4. If the vehicle will not operate, proceed to Tow/Run Switch Test without the IQDM Handset.
5. If the IQDM display screen begins to work after the vehicle has been driven, turn the key switch to the
OFF position and proceed to step 6; otherwise, perform the following procedure, Tow/Run Switch Test
without the IQDM Handset.
Figure 11-14 Test A1 and A2 Motor Voltage
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