Perkins M190C - Battery; Can Not Reach Top Engine RPM

KENR9126 39
Troubleshooting Section
i04010432
Battery
Note: The problem is not an electronic system
problem.
Probable Cau
ses
•
Charging circuit
•
Battery
•
Auxiliary d
evice
Recommend
ed Actions
Charging Circuit
If a fault in the battery charging circuit is suspected,
refer to Troubleshooting, “Alternator Will Not Charge”.
Faulty Battery
1. Check th
at the battery is able to maintain a charge.
2. If the battery does not maintain a charge, replace
the batt
ery.
Auxiliary Device
1. Check that an auxiliary device has drained the
battery by being left in the ON position.
2. Ch arge the battery.
3. Verif
y that the battery is able to maintain a charge
when all auxiliary devices are switched off.
i04010433
Can Not Reach Top En gine
RPM
Note: If this fault occurs only under load, refer to
Troubleshooting, “Low Power/Poor or No Response
to Throttle”.
Probable Causes
•
Diagnostic codes
•
ECM parameters
•
Throttle signal from the throttle position sensor
•
Air intake and exhaust system
•
Fuel supply
•
Individual ma
lfunctioning cylinders
•
Electronic unit injectors
Recommended Actions
Diagnostic Codes
Check for ac
tive diagnostic codes on the electronic
service tool. Troubleshoot any active codes before
continuing with this procedure.
ECM Parameters
1. Ensure tha
t the fault is not being caused by an
incorrect programmed p arameter.
2. Use the el
ectronic service tool in order to ensure
that the correct mode is selected.
3. Use the el
ectronic service tool to verify the correct
engine rating for the engine.
4. Use the e
lectronic service tool to verify the
maximum engine speed limit.
5. Use the e
lectronic service tool to verify the
following parameters at maximum speed: the
boost pressure, the smoke limit, the torque limit,
and the
amount of fuel that is delivered.
6. Use the electronic service tool to reset the
param
eters to the OEM specifications.
7. Check that the repairs have eliminated the fault.
8. If the repairs have not eliminated the fault proceed
to “Throttle Signal for the Throttle Position Sensor”.
Throttle Signal for the Throttle Position
Sensor
1. Use the electronic service tool and observe the
signal for the throttle position sensor. Make sure
tha
t the throttle reaches the 100% raw position
and the calibrated position.
2. If t
he signal is erratic, refer to Troubleshooting,
“Digital Throttle Position Sensor Circuit - Test”.
3. If
the fault has not been eliminated, proceed to
“Air Intake and Exhaust System”.
Ai
r Intake and Exhaust System
1. Check the air filter restriction indicator, if equipped.