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Home >> Pontiac >> 2007 >> Grand Prix Base >> Repair and Diagnosis >> Accessories & Equipment >> Cruise Control Systems >> Diagnostic Information and Procedures >> DTC P0568 >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the cruise control switch.
  2. Ignition ON, cruise control switch ON, observe the scan tool Cruise Set/Coast Switch parameter.
    • If the scan tool parameter reads Inactive or Off, replace the cruise control switch assembly.
    • If the scan tool parameter reads On, Active or Invalid, test the cruise control switch signal circuit for a short to voltage. If the circuit tests normal, replace the ECM/PCM.
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