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Test D (Vent Circuit Open Test)

  1. Remove connector from cruise control servo. Measure resistance between terminals "A" and "C" of servo connector. See Fig 1 . If resistance is less than 35 ohms, go to TEST J (VENT CIRCUIT SHORT TEST)  .
  2. If resistance is greater than 55 ohms, replace servo. If resistance is 35 to 55 ohms, check for an open in Dark Blue/White wire between terminal "C" of module connector and terminal "A" of servo connector. See Figure and Fig 1 . Ensure there is continuity to ground at terminal "C" of servo connector.
Fig 1: Identifying Cruise Control Servo Connector Terminals
G92D03694Courtesy of GENERAL MOTORS CORP.
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