ELECTRICAL SYSTEM AND TESTING
Troubleshooting
Page 11-16
2008-2011 IQ Plus Electric Vehicle Maintenance and Service Supplement
11
TEST PROCEDURE 2 – ONBOARD COMPUTER SOLENOID LOCKOUT CIRCUIT
See General Warning, Section 10, Page 10-1.
The solenoid lockout circuit disables the vehicle when the battery charger is plugged into the vehicle. Use the
following procedure to test the solenoid lockout circuit:
1. With batteries connected, place the Tow/Run switch in the RUN position.
2. Set a multimeter to 200 volts DC. Place black (–) probe on battery no. 8 negative post and red (+) probe
(with insulation-piercing probe) on the blue onboard computer wire (1) at a point between the OBC and
the six-pin connector
. The reading should be approximately 40-43 volts. If the reading is
not 40-43 volts, proceed to step 4. If the reading is 40-43 volts, proceed to Test Procedure 3 – Solenoid
Activating Coil on page 11-17.
3. On the other side of the six-pin connector, the blue onboard computer wire (1) changes to a light blue 18-
gauge wire. Place insulation-piercing probe on the light blue 18-gauge wire at a point between OBC six-
pin connector and main wire harness. If reading is not 40-43 volts, check the wire terminal connectors
inside the six-pin connector. Make sure pins are properly aligned inside housing. Make sure wire colors
match and are connected to the correct terminals.
4. Place insulation-piercing probe on the light blue 18-gauge wire (2) at a point between speed controller
24-pin connector and main wire harness
. If reading is not 40-43 volts, check the wire ter-
minal connectors inside the 24-pin connector or for possible broken wires. Make sure pins are properly
aligned inside housing. Make sure wire colors match and are connected to the correct terminals.
5. If reading is zero volts, plug the charger DC cord into the vehicle charger receptacle. If the dash light illu-
minates for 10 seconds, the OBC is now powered-up. Unplug the DC cord; the reading at the OBC blue
wire should be approximately 40-43 volts. If the vehicle now operates normally, the DC cord has powered
up the electrical system. The electrical system should also power-up when the accelerator pedal is
pressed. To check the accelerator pedal function, see
Test Procedure 4 – MCOR Voltage on
6. If the dash light illuminates for 3 seconds and the vehicle does not operate, proceed to
4 – MCOR Voltage on page 11-18.
7. If the dash light does not illuminate and the vehicle does not operate, check the OBC activation circuit.
7.1. Set a multimeter to 200 volts DC. Place the black (–) probe on the battery no. 8 negative post and
place the red (+) probe (with insulation-piercing probe) on the red 18-gauge wire located on the
OBC side of the six-pin connector. The reading should be approximately 48 volts. If the reading is
incorrect, test the continuity from the pink wire on the solenoid to the red pin on the OBC harness.
7.2. Set a multimeter to 200 volts DC. Place the black (–) probe on the battery no. 8 negative post and
place the red (+) probe (with insulation-piercing probe) on the blue 18-gauge wire (harness side of
six-pin connector). Multimeter should indicate 40-43 volts. If voltage is not correct, check connec-
tions in the six-pin connector. If connections are correct, OBC activation circuit has failed. Replace
OBC.
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