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Home >> Cadillac >> 2007 >> STS V >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 4.4L - DTC P0700 To DTC P2544 >> DTC P2261 >> Component Testing
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Component Testing

  1. Ignition OFF, disconnect the top vacuum hose at the bypass actuator.
  2. Connect a vacuum gage to the actuator. Apply 10 in Hg to the actuator. The actuator should retract and hold vacuum for at least 15 seconds.
    • If the actuator does not hold vacuum, replace the actuator.
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