Codes p1227 and p1111
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Vincentbrough (09-29-2014)
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P1227 Mechanical Guard Sensor Circuit Low Voltage.
Mechanical guard sensor to ECM sense circuit low voltage,
ECM: open circuit or high resistance
Sensor power supply fault or Mechanical guard sensor failure.
Inhibits cruise control
The Mechanical Guard is near the Pedal Position Sensor on the Throttle Body.
Mechanical guard sensor to ECM sense circuit low voltage,
ECM: open circuit or high resistance
Sensor power supply fault or Mechanical guard sensor failure.
Inhibits cruise control
The Mechanical Guard is near the Pedal Position Sensor on the Throttle Body.
Last edited by Paul Pavlik; 09-29-2014 at 08:29 PM.
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There are a number of differences between the Throttle Body on the AJ26 and the AJ27 Engines.
Mechanically, there are major differences between the default spring-loaded positions of the Throttle Plate and the intermediate linkage between the Pedal Position linkage and the Throttle Plate.
In the AJ26, a Mechanical Guard is Positioned between the Pedal Position Linkage and the Throttle Plate Linkage. The Cruise Control Vacuum Servo is connected to the Mechanical Guard Linkage.
The AJ27 Throttle Body uses the ECM to operate the Throttle Motor for Cruise Control and has no Mechanical Guard.
Both The AJ26 and AJ27 Throttle Bodies Have provision for a direct Mechanical connection from the Pedal to the Throttle Plate if the Throttle Motor Fails, but the mechanics are very different.
Mechanically, there are major differences between the default spring-loaded positions of the Throttle Plate and the intermediate linkage between the Pedal Position linkage and the Throttle Plate.
In the AJ26, a Mechanical Guard is Positioned between the Pedal Position Linkage and the Throttle Plate Linkage. The Cruise Control Vacuum Servo is connected to the Mechanical Guard Linkage.
The AJ27 Throttle Body uses the ECM to operate the Throttle Motor for Cruise Control and has no Mechanical Guard.
Both The AJ26 and AJ27 Throttle Bodies Have provision for a direct Mechanical connection from the Pedal to the Throttle Plate if the Throttle Motor Fails, but the mechanics are very different.
Last edited by Paul Pavlik; 09-29-2014 at 11:00 PM.
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