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ELECTRICAL SYSTEM AND TESTING Troubleshooting
Page 11-18 2008-2011 IQ System 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. 6 negative post and red (+) probe
(with insulation-piercing probe) on the blue onboard computer wire (at a point between the OBC and the
six-pin connector). The reading should be approximately 48-50 volts (full battery voltage). If the reading
is not 48-50 volts, proceed to step 3. If the reading is 48-50 volts, proceed to Test Procedure 3 – Solenoid
Activating Coil on page 11-19.
3. 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 48-50 volts, check the wire terminal connectors inside six-pin con-
nector at OBC. Make sure pins are properly aligned inside housing. Make sure wire colors match and are
connected to the correct terminals.
4. 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 48-50 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 page 11-19.
5. If the dash light illuminates for 10 seconds and the vehicle does not operate:
5.1. Set a multimeter to 200 volts DC. Place black (–) probe on battery number 6 and place red (+) probe
(with insulation-piercing probe) on blue 18-gauge wire at OBC six-pin connector.
5.2. With Tow/Run switch in the RUN position, the voltage reading should be approximately 48 volts.
6. If the dash light does not illuminate and the vehicle does not operate, check the OBC activation circuit.
6.1. 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 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 Tow/Run switch and connecting wires.
See Test Procedure 6 – Tow/Run Switch
on page 11-21.
Figure 11-11 Battery Voltage Check – IQ System DS
Villager 4 4x12-Volt Configuration
P
O
S
NEG
P
O
S
NEG
P
O
S
NEG
P
O
S
NEG
4
3
2
1
2m
20
m
200
m
2k
200
200
200 200
20
2
200
m
500
20k
200k
2000
k
1000
OFF
WAVETEK 5XL
V
V
V
A
! ! COM 200nA
MAX
1000 ---
750V
FUSED