B
FAULT TESTING
Read all of SAFETY and this section before attempting any procedure. Pay particular attention to Notices, Cautions, Warnings and Dangers.
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Repair and Service Manual
699327
Key Switch - Testing
Use the handheld diagnostic tool to verify operation of the
key switch. See the inputs on the monitor menu. Operate
the switch to change its status. This will confirm a failed
switch or a bad circuit.
Fig. 11 Key Switch
Fig. 12 Circuit Pins
NOTICE: This test can also be done with the hand-
held tool. Scroll down to the direction functions in
the Monitor Menu.
If a handheld programmer is not available, the key switch
can be tested for continuity using a DVOM (See Electrical
Schematic on page 74).
State of Charge (SOC) / Hour Meter - Testing
To test the SOC function of the meter, check for continuity
between pin C and pin B (Ref Fig. 13).
To test the hour function of the meter, check for continuity
between pin C and pin D.
If either function fails, the meter should be replaced.
If both functions pass and there is an issue with the
meter, check the voltage at the harness with the key-
switch in the ON position to determine the issue using the
table below (Ref Fig. 13).
Fig. 13 SOC / Hour 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
primary 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.
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 the battery voltage
and wiring.
Pin A
Ground
Pin B
0-5V
Pin C
10-18V
Pin D
10-18V
PRELIMINARY
