Ezgo RXV ELECTRIC Service & Repair Manual page 152

TROUBLESHOOTING AND DIAGNOSTICS
Read all of Section B and this section before attempting any procedure. Pay particular attention to all Notes, Cautions and Warnings.
B
CODE DESCRIPTION
Heat Sink Temp
Warning
High
Heat Sink Temp
Warning
Sens
Warning Default Parameter
Warning Power Reduction
Warning Cur Meas Cal
Warning Speed Sensor
Warning OD Current High
Warning Charger Connected
Warning Brake Slipping
Page O-10
POSSIBLE CAUSES
1. Measured heat sink temper-
ature is greater than 85°C
(185°F) but less than 115°C
(239°F), linear torque current
reduction is active, drivability is
affected.
1. Heat sink temperature sen-
sor shorted or not connected.
Default parameters are in
place.
1. This warning is normal the
first time the controller is pow-
ered up after down loading new
software.
2. If not after new software
download this indicates a prob-
lem with the EEPROM.
1. This warning occurs in con-
junction with other motor and
heat sink temperature warn-
ings and indicates that max
torque current reduction is in
affect.
1. The controller's AC current
measurement system is not
calibrated
1. Sensor or wire failure
1. The current in an open drain
output (reverse warning alarm,
park brake, resistor control,
solenoid or brake relay) is
greater than 2.5 amps.
1. Battery charger is connected
to the car. Driving is prohibited
while charger is connected.
1.Controller has detected
motor rotation while brake is
engaged
Repair and Service Manual
DIAGNOSTIC STEP
1. Check external heat sink temperature,
should be less than 80°C (176°F).
1. Check external heat sink temperature, it
should be more than -20°C (-4°F) and less
than 80°C (176°F).
2. If heat sink temperature is greater than
-20°C (-4°F) and less than 70°C (158°F) then
see ACTION 2
1. Cycle the key switch to 'OFF' then back to
"F".
1. Refer to trouble shooting steps for the
motor and controller temperature warning
conditions.
No diagnostic steps
1. Check pedal functions in diagnostic real
time.
1. Check each output drain device (reverse
warning alarm, park brake, resistor control,
solenoid and brake relay) for a shorted con-
dition, less than 0.1 ohms with the key switch
turned to 'OFF'
1. Check for charger connection to the vehi-
cle.
2. Check charger receptacle for water inges-
tion or a shorted condition (is the green LED
on?).
1. Can occur when key switch is turned to
'OFF' while vehicle is moving.
2. Check for vehicle resistance to movement
with key switch turned to 'OFF', if vehicle
moves see ACTION 1.
ACTION (post diagnos-
tics)
1. Allow time to cool.
2. Reduce payload or driv-
ing grade.
3. Replace controller.
1. Allow time to warm or
cool depending upon tem-
perature.
2. Replace controller.
1. Replace controller.
- - -
1. Replace controller
1. Replace pedal sensor.
1. If shorted condition is
found replace the shorted
component.
2. Replace controller.
1. Disconnect the charger
from vehicle.
2. Replace charger recep-
tacle.
1. Replace motor brake