Troubleshooting

64 RENR2696-01
Troubleshooting Section
Troubleshooti
ng with a
Diagnostic Code
i01798139
CID 0041 FMI 03 8v Sensor
Power Supply, Voltage More
Than Normal
Conditions Which Generate This Code:
The ECM detects all of the following conditions:
•
The ECM has been powered for at least three
seconds.
•
The ECM reads signal voltage that is above
normal.
System Response:
The ECM will log the diagnostic code. The diagnostic
code may be viewed on the electronic service tool.
TheECMwillreturntheenginetolowidleorasafe
speed. The engine will remain at low idle or safe
speed while the diagnostic code remains active.
Possible Performance Effect:
•
Low power
Troubleshooting:
Perform the following diagnostic procedure: “Throttle
Position Sensor Circuit - Test”
Results:
•
OK – STOP.
i01798140
CID 0041 FMI 04 8v Sensor
Power Supply, Voltage Less
Than Normal
Conditions Which Generate This Code:
The ECM detects all of the following conditions:
•
The ECM has been powered for at least three
seconds.
•
The ECM reads signal voltage that is below normal.
System Response:
The ECM will log
the diagnostic code. The diagnostic
code may be viewed on the electronic service tool.
The ECM will re
turn the engine to idle or a safe
speed. The engine will remain at idle or safe speed
while the diagnostic codes remain active.
Possible Pe rformance Effect:
•
Low power
Troubleshooting:
Perform the following diagnostic procedure: “Throttle
Position Sensor Circuit - Test”
Results:
•
OK – STOP.
i01798141
CID 0091 FM I 0
2Throttle
Demand Sensor Erratic Or
Intermittent
Conditions W
hich Generate This Code:
Iftheengineisequippedwithathrottleswitchthen
the signal f
rom this switch is invalid.
Iftheengineisequippedwithathrottleposition
sensor then
the signal from the throttle idle validation
switch is invalid.
System Resp
onse:
The ECM will log the diagnostic code. The diagnostic
code may be v
iewed on the electronic service tool.
Possible Pe rformance Effect:
The engine speed defaults to low idle or a
predetermined safe speed.
The engine will remain at this speed while the
diagnostic code remains active.
The reduction of speed is determined by the current
speed of the engine.