Circuit/System Verification
WARNING: This page is about a different car, the 2011 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
- Verify that DTC B138A is not set.
- If DTC is set, refer to DTC B138A .
- Park brake OFF, transmission in REVERSE, individually place an object behind each sensor. Verify the appropriate scan tool Rear Region parameter is between Zone 1 and Zone 4.