Taylor-Dunn MX6-00, Operation, Troubleshooting Manual

Page: 89 / 200

ELECTRICAL TROUBLESHOOTING
SECTION 4 Main Sequence PAGE 11
Connect the accelerator module test harness to
the accelerator module.
Connect a voltmeter between pin #9 in the test
harness and battery positive.
• If the voltage is not at battery volts then
the wiring between pin #9 in the harness
and battery negative is open. Stop
trouble shooting here and repair the
problem. When the repair is completed,
completely retest the vehicle before
lowering the drive wheels to the ground.
Connect a voltmeter negative probe to Pin #9
(-) in the test harness. Connect the positive
probe to:
24 or 36 volt truck - Pin #4
48 volt truck - Pin #7
Close all interlock switches and turn the
Key Switch ON.
•
If the voltage is not at battery volts then
go to the
Key Switch sequence.
Connect a voltmeter between pin #9 (-) and pin
#5 (+) in the test harness.
Close all interlock switches and turn the
Key Switch ON.
Depress the accelerator pedal to engage
MS-1 only.
•
If the voltage is not at battery volts then
the accelerator module has failed. Stop
trouble shooting here and repair the
problem. When the repair is completed,
completely retest the vehicle before
lowering the drive wheels to the ground.
•
If the voltage at pin #5 is good but the
test at the center terminal of the forward
and reverse side of the F&R switch in
the Key Switch Section failed then check the wire between the accelerator module pin #5
and the F&R switch. Stop trouble shooting here and repair the problem. When the repair
is completed, completely retest the vehicle before lowering the drive wheels to the ground.
Main Battery Positive
+
-
The voltage shown is for illustration
only. The actual voltage may vary.
+
-
The voltage shown is for illustration
only. The actual voltage may vary.
24-36-volt
48-volt
+
-
The voltage shown is for illustration
only. The actual voltage may vary.