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Home >> Buick >> 1993 >> LeSabre Custom >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 3.8L >> ECM/Pcm Code Charts >> Code 65 - Cruise Servo Position (3.8L)

Code 65 - Cruise Servo Position (3.8L)

PCM supplies 5 volts to cruise control servo position sensor. Depending upon actual servo position, voltage on servo position sensor circuit will indicate to PCM position of servo. Code 65 will set if circuit No. 399 is open or if circuit No. 398 is open or shorted to ground or voltage.

Fig 1: Code 65 Schematic (3.8L "C" & "H" Bodies) Cruise Servo Position
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Fig 2: Code 65 Schematic (3.8L "E" Body) Cruise Servo Position
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Fig 3: Code 65 Schematic (3.8L "W" Body) Cruise Servo Position
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Fig 4: Code 65 Flow Chart (3.8L) Cruise Servo Position
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