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Home >> Chevrolet >> 2007 >> Impala SS >> Repair and Diagnosis >> External Pages >> Different car >> Section 770 (Object Detection System) >> Diagnostic Information and Procedures >> DTC B356A >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2008 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the headlamp switch.
  2. Test for infinite resistance between the signal circuit terminal 9 and the ground circuit terminal 8 with the switch in the Open position.
    • If the specified value, replace the headlamp switch.
  3. Test for less than 2 ohms between the signal circuit terminal 9 and the ground circuit terminal 8 with the switch in the Closed position.
    • If greater than the specified range, replace the headlamp switch.
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