Page G-13
Repair and Service Manual
B
B
ELECTRONIC SPEED CONTROL
Read all of Section B and this section before attempting any procedure. Pay particular attention to Notices, Cautions, Warnings and Dangers.
Fig. 13 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 probe on BL+ and
negative probe on BL-
BRV preferably 48 Volt
Perform battery discharge test.
Verify the chrager/process
Negative probe on BL- and
positive probe on battery
side of solenoid
BRV
Verify wire/connection quality
Positive probe on B+ and
negative probe on B-
BRV
Verify solenoid function. Check wiring.
Negative probe on BL- and
positive probe on solenoid B+
BRV with solenoid engaged
Verify primary voltage at Pin 5 & 17.
If BRV 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.
