Page F-28
Repair and Service Manual
Read all of Section B and this section before attempting any procedure. Pay particular attention to all Notices, Cautions, Dangers and Warnings.
B
ELECTRONIC SPEED CONTROL - HAULER 1000
Fig. 26 Secondary Wiring Diagnostics
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
J1
1
2
3
4
5
6
J2
1
2
3
4
J3
F2
MAIN
B+
M-
B-
F1
A2
A1
A
F2
F1
This test will verify secondary circuit voltage. Please reference the chart for probe connections.
Probe Connection
Voltage
If not/ Then
Positive prove on BL+ and
negative probe on BL-
BRF preferably 48 Volt
Perform battery discharge test.
Verify the chrager/process
Negative probe on BL- and
positive probe on battery
side of solenoid
BRF
Verify wire/connection quality
Positive probe on B+ and
negative probe on B-
BRF
Verify solenoid function. Check wiring.
Negative probe on BL- and
positive probe on solenoid B+
BRF with solenoid engaged
Verify primary voltage at Pin 5 & 17.
If BRF is found on the primary
terminals, replace solenoid.
Positive probe on B+ and
negative probe on M-
1-48 Volt depending on
performance plug
To verify: engage solenoid at high
pedal. Voltage should start around
1-2 volt. As the pedal is slowly
depressed to the floor, voltage should
rise to around 48 volt. If extremely low
voltage is observed, replace the
controller. If immediate high voltage is
observed, replace the motor.
