B
120
Repair and Service Manual
FAULT TESTING
Read all of SAFETY and this section before attempting any procedure. Pay particular attention to Notices, Cautions, Warnings and Dangers.
10002660
State of Charge (SOC) Meter - Testing
Put the positive (+) meter probe on the F terminal (red w/
blue wire) and the negative probe of DVOM on the A ter-
minal (black wire) of the SOC meter (Fig. 15). Voltage
should be 8-20V. If not; check the batteries and harness.
The B terminal (green wire) is a .4 – 4.5V circuit that will
range with state of charge.
Fig. 15 SOC Meter
Electronic Speed Controller Solenoid - Test-
ing
To check the electronic speed controller solenoid for
energy; follow the steps below:
1.
Put the positive meter probe on the white wire pri-
mary circuit terminal. Put the negative meter probe
on the black / orange primary circuit terminal. 72V
should be indicated on the meter with the key on and
the direction selector in gear.
2.
Put the negative meter probe on controller B or the
negative 72V battery terminal. Put the positive probe
on the secondary circuit battery side terminal. 72V
should be indicated. If not, check battery voltage and
wiring.
NOTICE: The solenoid testing can also be done with
the handheld tool. Scroll down to the Monitor Menu.
Check inputs and outputs for change in status.
Check for contactor related faults in the faults
menu.
Fig. 16 Solenoid
A
B
C
D
E
F
