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Home >> Cadillac >> 2009 >> CTS Base, 3.6 V, RWD, Standard >> Repair and Diagnosis >> Body & Frame >> Windows >> Fixed And MOVEABLE Window System >> Diagnostic Information and Procedures >> Power Windows Malfunction >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON, observe the operation of the power windows while commanding each window UP and DOWN by using their respective window switches, each window should perform the UP and DOWN function.
    • If the front passenger window malfunctions, refer to Front Window Malfunction under Circuit/System Testing .
    • If either rear passenger power window malfunctions, refer to Rear Window Malfunction under Circuit/System Testing .
  2. Observe the scan tool Driver Window RF Switch, Driver Window LR Switch and Driver Window RR Switch parameters while using the driver master control switches. The parameter should change between Off/Up/Down/Express Down.
    • If the value does not change between commanded states, replace the DDM.
  3. Observe the scan tool Window Lockout Switch parameter while pressing and depressing the window lockout switch on the driver master control. The parameter should change between On and Off.
    • If the value does not change between commanded states, replace the DDM.
  4. Command the express up and express down functions of the driver and passenger door windows by pressing their window switches past the first detent and releasing and pulling their window switches past the first detent and releasing. The appropriate window should perform the express up and express down function.
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