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Home >> Cadillac >> 2007 >> CTS Base, 2.8 T, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 539 (Object Detection System) >> Diagnostic Information and Procedures >> Rear Parking Assist Inoperative - Red Indicator Flashes >> Circuit/System Testing >> Diagnostic Indicator Pattern 1
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Diagnostic Indicator Pattern 1

WARNING: This page is about a different car, the 2009 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Enter the diagnostic mode. Refer to Diagnostic Trouble Code (DTC) Displaying . Verify that the Diagnostic Indicator Pattern 1 is displayed as shown in the diagnostic indicator list.
    • If the Diagnostic Indicator Pattern 1 does not display after entering the diagnostic mode, test the signal circuit terminal 16 for a short to voltage or an open/high resistance. If the circuit tests normal, test or replace the rear object sensor control module.
  2. Proceed to the next Diagnostic Indicator Pattern displayed.
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