ELECTRICAL SYSTEM AND TESTING: ELECTRIC
VEHICLES
Test Procedures
22
Batteries / Voltage Check with the IQDM Handset
1.
Connect the IQDM to the vehicle.
See Plugging the Handset into the Vehicle, Section 23, Page 23-1.
2.
Access the Test menu and select BATT VOLTAGE by using the SCROLL DISPLAY buttons. The IQDM should
indicate at least 48 volts with the batteries fully charged. If not, check for loose battery connections or a
battery installed in reverse polarity. Refer to See Section 25 – Batteries: Electric Vehicles. for further details
on battery testing.
Batteries / Voltage Check without the IQDM Handset
1.
With batteries connected and using a multimeter set to 200 volts DC, place red (+) probe on the positive (+) post
of battery no. 1 and the black (–) probe on the negative (–) post of battery no. 8 Figure 22-3, Page 22-11.
The multimeter should indicate at least 48 volts with the batteries fully charged. If not, check for loose battery
connections or a battery installed in reverse polarity. Refer to See Section 25 – Batteries: Electric Vehicles. for
further details on battery testing.
1
3
5
7
8
2
4
6
3
2
1
(+)
(–)
1. Place Tow/Run Switch in TOW before disconnecting or
connecting battery cables.
2. Remove negative battery cable.
3. Remove positive battery cable.
Connect battery cables in reverse order.
73
Figure 22-3
Battery Configuration
TEST PROCEDURE 2 – Onboard Computer Solenoid Lockout Circuit
See General Warning on page 1-1.
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 22-12.
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
2007-2009 Turf 252, Carryall 252 and XRT 900 Maintenance and Service Manual
Page 22-11
