Club Car Carryall 500 2019 Maintenance And Service Manual page 481

Never attempt to disassemble ECU. It is sealed to
prevent damage to internal components. Warranty is
void if case is opened or tampered with in any way.
All operating and control functions within ECU are
preset. No internal servicing or readjustment may
be performed. If a problem is encountered, and you
determine ECU to be faulty, contact your source of
supply.
ECU pins are coated at factory with a thin layer of
electrical grease to prevent fretting and corrosion. Do not
attempt to remove grease from ECU pins.
Relationship between ECU and throttle position sensor
(TPS) is very critical to proper system operation. If
TPS or ECU is changed, or mounting position of TPS
is altered, appropriate TPS Learn Procedure must be
performed to restore synchronization.
Any service to ECU, TPS/Throttle Body (including
idle speed increase over 300 RPM), or fuel pump
replacement should include ECU Reset.
This will clear all trouble codes, all closed loop learned
off sets, all max values, and all timers besides permanent
hour meter.
This system will NOT reset when battery is
disconnected!
ECU Reset Procedure
1. Turn key/ignition OFF.
2. Install Red wire jumper from Kohler EFI service kit
on to service port (connect white wire to black wire in
4 way diagnostic port).
3. Turn key/ignition ON, then OFF and count 15
seconds.
4. Turn key/ignition ON, then OFF and count to 15
seconds a second time.
5. Remove Red wire jumper. Turn key/ignition ON, then
OFF and count to 15 seconds a third time. ECU is
reset.
A TPS Learn Procedure must be performed after ECU
Reset. Follow TPS Learn Procedure for appropriate
specifi c application being serviced.
17 690 15 Rev. --
TPS Learn Procedure for Pedal Start Applications
NOTE: Refer to equipment manufacturer's manual for
details on throttle body cover and throttle cable
removal/reinstallation.
1. Remove throttle body cover.
2. Disconnect throttle cable from throttle lever.
3. Turn idle screw clockwise one full turn prior to key/
ignition ON after ECU Reset.
4. Start engine, run at low idle until engine is warm.
5. Idle speed must be above 1100 RPM. If below 1100
RPM, turn idle screw up to 1200 RPM and then shut
down engine and perform ECU Reset again.
6. Restart engine, adjust idle speed down to 1050
RPM. Allow engine to dwell at 1050 RPM for about 3
seconds.
7. Turn key/ignition OFF and count to 15 seconds.
8. Reinstall throttle cable.
9. Reinstall throttle body cover.
Learn procedure for pedal start application is complete.
TPS Learn Procedure for Key Start Applications
1. Turn idle screw clockwise one full turn prior to key/
ignition ON after ECU Reset.
2. Start engine, run at low idle until engine is warm.
3. Idle speed must be above 1200 RPM. If below 1200
RPM, turn idle screw up to 1300 RPM and then shut
down engine and perform ECU Reset again.
4. Restart engine, adjust idle speed down to 1250
RPM. Allow engine to dwell at 1250 RPM for about 3
seconds.
5. Turn key/ignition OFF and count to 15 seconds.
Learn procedure for key start application is complete.
KohlerEngines.com
EFI SYSTEM
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