Club Car Carryall 500 2019 Maintenance And Service Manual page 502

EFI SYSTEM
Flow Chart Diagnostic Aids
Diagnostic Aid #1 SYSTEM POWER
(MIL does not illuminate for 3 seconds when key is fi rst
turned ON)
NOTE: MIL is installed by vehicle OEM. Twelve volt
supply to bulb will be part of vehicle wire
harness. Review MIL Operation for Pedal Start
Applications or MIL Operation for Key Start
Applications earlier in this section.
Conclusion
● Battery
● Main system fuse
● MIL light bulb burned out
● MIL electrical circuit problem
Pin circuits Grey 3.
● Ignition switch
● Permanent ECU power circuit problem
Pin circuit Black 18.
● Switched ECU power circuit problem
Pin circuit Black 15.
● ECU grounds
● ECU
Diagnostic Aid #2 FAULT CODES
Refer to Diagnostic Fault Code Summary.
NOTE: If fault code P0337 is present and engine does
not start/run, proceed to step 1 of Crankshaft
Position Sensor earlier in this section. If P0337
is present and engine operates, clear codes and
retest.
Diagnostic Aid #3 RUN/ON
(MIL remains ON while engine is running)
Conclusion
● All current fault codes will turn on MIL when key is ON
or engine is running.
● If MIL is on and no fault codes are active, check MIL
wiring between ECU and bulb.
Diagnostic Aid #4 CRANKSHAFT POSITION SENSOR
(MIL does not turn off during cranking)
Condition
● Crankshaft position sensor
● Crankshaft position sensor circuit problem, pin circuits
Black 4 and Black 13.
● Crankshaft position sensor/toothed wheel air gap
● Toothed wheel
● Flywheel key sheared
● ECU
50
Diagnostic Aid #5 FUEL PUMP
(fuel pump not turning on)
Condition
● Inspect fuse(s)
● Fuel pump relay circuit problem, pin circuits Black 9
and Grey 17.
● Fuel pump
Diagnostic Aid #6 IGNITION SYSTEM
(no spark)
Condition
● Spark plug
● Plug wire
● Coil
● Coil circuit, pin circuits Grey 10 and Black 1.
● ECU grounds
● ECU
● Vehicle safety interlocks, refer to equipment
manufacturer's manual
Diagnostic Aid #7 FUEL SYSTEM ELECTRICAL
(no fuel delivery)
Condition
● No fuel
● Air in high pressure fuel line
● Fuel fi lter/line plugged
● Injector circuit, pin circuits Black 5 and Black 6
● Injector
● ECU grounds
● ECU
Diagnostic Aid #8 FUEL SYSTEM
(fuel pressure)
Low Fuel Pressure-Condition
● No fuel
● Fuel fi lter(s) plugged
● Fuel supply line plugged
● Fuel pump - internally plugged
● Pressure regulator not functioning properly inside fuel
pump.
Diagnostic Aid #9 BASIC ENGINE
(cranks but will not run)
Condition
● Refer to basic engine troubleshooting charts within
Troubleshooting and/or refer to equipment
manufacturer's manual.
KohlerEngines.com 17 690 15 Rev. --