Page G-11
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. 11 J-1 Pin Connector Diagnostics (Continued)
All tests are to be performed with the negative lead of the DVOM connected to the negative side
of battery pack voltage.
The positive lead of the DVOM is used to probe the controller/battery connections. Leave connections
plugged in the controller
Verify the Battery Reference Voltage at the main battery pack leads. (should be around 48 volts in
8 battery applications) All pin connector checks are performed with the key 'ON' and the 'Tow/Maintenance'
switch in the RUN position
.
Make certain all pin connections are firmly seated.
Pin number
Voltage
If not/ Then
J1-1
BRV
Verify key switch, wiring connections, and pin 12 voltage.
J1-2
BRV
Verify reed switch, tow switch, and wiring connections
J1-4
BRV
Verify aux power voltage and wire condition.
J1-6
BRV
Verify accelerator micro, wiring, and pin 8 voltage.
J1-3
BRV
Verify tow switch and aux power wiring
J1-7
BRV
Verify wire connections. Possible controller failure.
J1-8
BRV
Verify wiring. Possible faulty controller.
J1-20
Performance option plug wiring. No need to check.
Performance option plug wiring. No need to check.
Performance option plug wiring. No need to check.
J1-23
J1-24
J1-9
Performance option plug wiring. No need to check.
J1-10
BRV
Verify direction selector and wiring.
J1-11
BRV
Verify direction selector and wiring.
J1-12
BRV
Verify wiring. Possible faulty controller.
J1-13
1-3.5 volts
ITS output. Verify wiring and ITS field. Measured with pedal up to
wide open throttle.
J1-15
16 - 17 volts
ITS input voltage. If low voltage is observed, unplug from field. If
voltage comes up, replace the ITS field. If voltage remains low,
replace the controller
J1-17
BRV
BRV will be observed until solenoid engages. BRV will diminish to
around 0 volts to engage solenoid. If not, verify wiring. Possible
faulty controller or shorted solenoid.
J1-19
BRV
BRV will be observed until vehicle is placed in the reverse
direction. BRV will diminish to 0 - 4 volts. Operates reverse alarm.
If not, verify wiring. Possible faulty controller.
J1-5
BRV
Verify wiring. Possible controller failure.
