28
Troubleshooting
EXCEL SYSTEM TROUBLESHOOTING:
WITH ERIC CHARGING
TROUBLESHOOTING GUIDE 1
SYMPTOM
POSSIBLE CAUSES
CORRECTIVE ACTION
Loose or disconnected motor speed sensor
or broken wire
Repair and/or connect the three-pin connector
to the motor speed sensor
Loose or disconnected 16-pin connector at
speed controller or broken wire
Repair and/or connect the 16-pin connector
to the speed controller
Monitor Menu – SPEED PULSES menu item
indicates that speed pulses are OFF when
the vehicle is in motion or Diagnostic Menu –
SPEED SENSOR fault code
Failed motor speed sensor
Test Procedure 12 – Motor Speed Sensor on
Loose or disconnected two-pin connector at
the MCOR or broken wire
Repair and/or connect the two-pin connector
to the MCOR
Loose or disconnected 16-pin connector at
speed controller or broken wire
Repair and/or connect the 16-pin connector
to the speed controller
Monitor Menu – FOOT INPUT menu item
indicates that the MCOR internal limit switch is
always ON or always OFF.
Failed MCOR
Test Procedure 5 – Key Switch and MCOR
Limit Switch Circuit on page 28-21
Loose or disconnected Forward/Reverse
rocker switch (quick disconnect terminals) or
broken wire
Repair and/or connect the quick disconnect
terminals to the Forward/Reverse switch
Loose or disconnected Forward/Reverse
rocker switch (three-pin connector) or broken
wire
Repair and/or connect the three-pin connector
from the Forward/Reverse switch to the wire
harness
Loose or disconnected 16-pin connector at
speed controller or broken wire
Repair and/or connect the 16-pin connector
to the speed controller
Monitor Menu – FORWARD INPUT and/or
REVERSE INPUT does not indicate the
correct reading
Failed Forward/Reverse rocker switch
Test Procedure 6 – Forward/Reverse Rocker
Speed controller logic malfunction
Disconnect the batteries and allow the
speed controller capacitors to discharge.
See WARNING “To avoid unintentionally
starting...” in General Warnings on page
1-2.
Reconnect the batteries and see if the
symptom returns.
Loose, broken, or disconnected wire(s) at
solenoid or B+ speed controller terminal
Repair and/or connect the loose or
disconnected wire(s)
Loose or disconnected 16-pin connector at
speed controller or broken wire
Repair and/or connect the 16-pin connector
to the speed controller
Monitor Menu – MAIN CONT DRIVER
(solenoid) does not indicate ON when the
solenoid should be activated. or Diagnostic
Menu – MAIN CONT DNC (main contactor in
solenoid did not close) fault code
Failed solenoid
Replace solenoid.
Loose or disconnected wires at key switch
terminals or broken wire
Repair and/or connect the quick disconnect
terminals to the Forward/Reverse switch
Loose or disconnected 16-pin connector at
speed controller or broken wire
Repair and/or connect the 16-pin connector
to the speed controller
Monitor Menu – KEY INPUT does not indicate
ON when key switch is in the ON position
Failed key switch
Test Procedure 5 – Key Switch and MCOR
Limit Switch Circuit on page 28-21
TABLE CONTINUED ON NEXT PAGE
Page 28-12
2014 Precedent
®
Golf Car Maintenance and Service Manual
Summary of Contents for Precedent 2014
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