Club Car 2009-20011 Electric Precedent Maintenance And Service Manual page 235

EXCEL SYSTEM TROUBLESHOOTING – MCOR
TROUBLESHOOTING GUIDE 1
SYMPTOM
Test Menu – SPEED PULSES menu item
indicates that speed pulses are OFF when
the vehicle is in motion or Diagnostic Menu –
SPEED SENSOR fault code
Test Menu – FOOT INPUT menu item indicates
that the MCOR internal limit switch is always
ON or always OFF.
Test Menu – FORWARD INPUT and/or
REVERSE INPUT does not indicate the
correct reading
Test Menu – MAIN CONT DRIVER (solenoid)
does not indicate ON when the solenoid
should be activated. or Diagnostic Menu –
MAIN CONT DNC (main contactor (solenoid)
did not close) fault code
Test Menu – KEY INPUT does not indicate ON
when key switch is in the ON position
TABLE CONTINUED ON NEXT PAGE
POSSIBLE CAUSES
Loose or disconnected motor speed sensor
or broken wire
Loose or disconnected 16-pin connector at
speed controller or broken wire
Failed motor speed sensor
Loose or disconnected two-pin connector at
the MCOR or broken wire
Loose or disconnected 16-pin connector at
speed controller or broken wire
Failed MCOR
Loose or disconnected Forward/Reverse
rocker switch (quick disconnect terminals) or
broken wire
Loose or disconnected Forward/Reverse
rocker switch (three-pin connector) or broken
wire
Loose or disconnected 16-pin connector at
speed controller or broken wire
Failed Forward/Reverse rocker switch
Speed controller logic malfunction
Loose, broken, or disconnected wire(s) at
solenoid or B+ speed controller terminal
Loose or disconnected 16-pin connector at
speed controller or broken wire
Failed solenoid
Loose or disconnected wires at key switch
terminals or broken wire
Loose or disconnected 16-pin connector at
speed controller or broken wire
Failed key switch
2009-2011 Electric Precedent Maintenance and Service Manual
Troubleshooting
CORRECTIVE ACTION
Repair and/or connect the three-pin connector
to the motor speed sensor
Repair and/or connect the 16-pin connector
to the speed controller
Test Procedure 21 – Motor Speed Sensor on
page 14-34
Repair and/or connect the two-pin connector
to the MCOR
Repair and/or connect the 16-pin connector
to the speed controller
Test Procedure 8 – Key Switch and MCOR
Limit Switch Circuit on page 14-20
Repair and/or connect the quick disconnect
terminals to the Forward/Reverse switch
Repair and/or connect the three-pin connector
from the Forward/Reverse switch to the wire
harness
Repair and/or connect the 16-pin connector
to the speed controller
Test Procedure 23 – Forward/Reverse Rocker
Switch on page 14-35
Disconnect the batteries and allow the
speed controller capacitors to discharge.
See WARNING "To avoid unintentionally
starting..." in General Warnings on page
1-1. Reconnect the batteries and see if the
symptom returns.
Repair and/or connect the loose or
disconnected wire(s)
Repair and/or connect the 16-pin connector
to the speed controller
Replace solenoid. See Solenoid Removal on
page 17-13.
Repair and/or connect the quick disconnect
terminals to the Forward/Reverse switch
Repair and/or connect the 16-pin connector
to the speed controller
Test Procedure 8 – Key Switch and MCOR
Limit Switch Circuit on page 14-20
14
Page 14-9