Detroit Diesel Troubleshooting Diagrams

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Series 60G Throttle Actuator

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The throttle actuator is used to control the amount of air and fuel mixture to the engine. A butterfly valve within the body is positioned by an electric actuator that is controlled by DDEC III/IV.

Series 60G Throttle Actuator Series 60G Throttle Actuator

Listed in Table are the throttle control diagnostic codes: ‪

Description Condition PID FMI Information
Throttle Plate Position ‪ HIGH Voltage ‪ P51 ‪ 3 ‪ Indicates that the Throttle Plate Position Sensor input to the ECM has exceeded 95% (normally >4.75 volts) of the sensor supply voltage. This diagnostic is typically an open sensor return circuit or sensor signal circuit is shorted to the sensor +5 volt supply. ‪
Throttle Plate Position ‪ LOW Voltage ‪ P51 ‪ 4 ‪ Indicates that the Throttle Plate Position Sensor input to the ECM has dropped below 5% (normally < 0.25 volts) of the sensor supply voltage. This diagnostic condition is typically detected when there is:- An open sensor signal circuit- An open sensor +5 volt supply circuit- The sensor signal is shorted to the sensor return circuit or to ground. ‪
Throttle Plate Position ‪ HIGH Position ‪ P51 ‪ 0 ‪ Indicates that the Throttle Plate Position Sensor input to the ECM has indicated that the throttle plate has exceeded the recommended operating range. ‪
Throttle Plate Position ‪ LOWPosition ‪ P51 ‪ 1 ‪ Indicates that the Throttle Plate Position Sensor input to the ECM has indicated that the throttle plate has dropped below the recommended operating range. ‪

Written by sam

September 26th, 2011 at 4:20 am

Posted in Air Intake System

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