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Home >> Chevrolet >> 2008 >> HHR SS, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 249 (Cellular Systems, Entertainment Systems & Navigation Systems) >> Diagnostic Information and Procedures >> OnStar Button Malfunction >> Component Testing
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Component Testing

WARNING: This page is about a different car, the 2010 Chevrolet HHR. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the inside rearview mirror.
  2. Test for infinite resistance between the keypad supply voltage terminal 12 and the keypad signal terminal 11.
    • If less than the specified range, replace the inside rearview mirror.
  3. Test for 1.4 K-1.6 K Ω between the keypad supply voltage terminal 12 and the keypad signal terminal 11 while pressing the red emergency button.
    • If not within the specified range, replace the inside rearview mirror.
  4. Test for 2.7 K-3.3 K Ω between the keypad supply voltage terminal 12 and the keypad signal terminal 11 while pressing the blue On-Star® button.
    • If not within the specified range, replace the inside rearview mirror.
  5. Test for 12.5 K-13.5 K Ω between the keypad supply voltage terminal 12 and the keypad signal terminal 11 while pressing the black phone button.
    • If not within the specified range, replace the inside rearview mirror.
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