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ELECTRICAL SYSTEM AND TESTING
Troubleshooting
Page 11-24
2008-2011 IQ System Electric Vehicle Maintenance and Service Supplement
11
Place the black (–) probe on the other key switch terminal.
4.3. With the key switch in the OFF position, the multimeter should indicate that continuity is not present.
4.4. With the key switch in the ON position, the multimeter should indicate that continuity is present.
4.5. If any other reading is obtained, replace the key switch.
See Key Switch Removal, Section 13,
4.6. If the key switch operates as described in the previous steps, install the dash panel in the reverse
order of removal and proceed to the following step.
5. Test the MCOR limit switch.
See following NOTE.
NOTE:
Make sure that the key switch is operating correctly and that the key switch and dash panel are
properly installed before proceeding.
5.1. With batteries connected and using a multimeter set to 200 volts DC, place the black (–) probe on
the battery no. 6 negative post and place the red (+) probe (with insulation-piercing probe) on the
green wire close to the two-pin connector on the MCOR.
5.2. With Tow/Run switch in the RUN position, key switch in the ON position, and Forward/Reverse
rocker switch in the NEUTRAL position, the voltage reading should be zero volts. When the accel-
erator pedal is pressed, the voltage reading should be approximately 48 volts (full battery voltage).
5.3. If the voltage reading is 48 volts when the accelerator pedal is not pressed, check the pedal group
for proper adjustment.
See Section 5 – Accelerator and Brake Pedal Group in the appropriate
maintenance and service manual.
5.4. If the voltage reading is zero volts when the accelerator pedal is pressed, check the limit switch cir-
cuit using the following test procedures.
5.4.1. Set a multimeter to 200 volts DC. Place black (–) probe on battery no. 6 negative post and
the place red (+) probe (with insulation-piercing probe) on the blue wire where it connects
to the MCOR. With the key switch ON, the reading should be approximately 48 volts (full
battery voltage).
5.4.2. If the reading is zero volts, check the continuity of the blue wire that goes from the key
switch to the MCOR.
5.4.3. If the reading is approximately 48 volts, proceed to the following step.
5.4.4. Set a multimeter to 200 volts DC. Place the black (–) probe on the battery no. 6 negative
post and place the red (+) probe (with insulation-piercing probe) on the green wire where it
connects to the MCOR. With the Tow/Run switch in the RUN position, the key switch ON,
the Forward/Reverse rocker switch in NEUTRAL and the accelerator pedal pressed, the
reading should be approximately 48 volts (full battery voltage).
5.4.5. If the reading is zero volts, test the continuity of the MCOR limit switch and the green wire.
If the limit switch does not pass the continuity test, replace the MCOR.