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Home >> Saturn >> 2006 >> Ion Red Line >> Repair and Diagnosis >> Body & Frame >> Windows >> Stationary Window System >> Diagnostic Information and Procedures >> Rear Window Defogger Malfunction >> Component Testing >> Rear Defog Switch

Rear Defog Switch

  1. Ignition OFF, disconnect the harness connector C2 at the HVAC control assembly
  2. Test for infinite resistance between the signal terminal J and the ground circuit terminal K with the switch in the open position.
    • If not the specified value, replace the HVAC control assembly.
  3. Test for less the 2.0 ohms between the signal terminal J and the ground circuit terminal K with the switch in the closed position.
    • If greater than the specified range, replace the HVAC control assembly
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