2010 Cadillac CTS Sedan AWD V6-3.6L Page 259
B0958 08, B0959 08, B0960 08, or B0961 08
An invalid signal is received by the rear object sensor control module.
B0958 21, B0959 21, B0960 21, or B0961 21
The object alarm sensor determines no change in the position of an object while the vehicle is in motion.
B0958 3A, B0959 3A, B0960 3A, B0961 3A
The rear object sensor control module determines there is an incorrect sensor installed.
Action Taken When the DTC Sets
* The parking assist system is disabled.
* The rear object sensor control module sends a serial data message to the instrument panel cluster (IPC) to display SERVICE PARK ASSIST
message in the driver information center (DIC).
Conditions for Clearing the DTC
* The DTC will transition to history when the fault is no longer present.
* A history DTC will clear after 100 malfunction-free ignition cycles.
Diagnostic Aids
Make sure the object alarm sensors located on the rear vehicle bumper are clear. Remove any snow, mud or ice that is blocking the sensors.
Reference Information
Schematic Reference
Object Detection Schematics (See: Accessories and Optional Equipment/Collision Avoidance and Parking Assist Systems/Diagrams/Electrical
Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Object Detection Description and Operation (UD7 with Display) (See: Accessories and Optional Equipment/Collision Avoidance and Parking
Assist Systems/Description and Operation/Object Detection Description and Operation (UD7 with Display))Object Detection Description and
Operation (UD7 Audio Only) (See: Accessories and Optional Equipment/Collision Avoidance and Parking Assist Systems/Description and
Operation/Object Detection Description and Operation (UD7 Audio Only))Object Detection Description and Operation (B3T) (See: Accessories
and Optional Equipment/Collision Avoidance and Parking Assist Systems/Description and Operation/Object Detection Description and Operation
(B3T))Object Detection Description and Operation (UVC) (See: Accessories and Optional Equipment/Collision Avoidance and Parking Assist
Systems/Description and Operation/Object Detection Description and Operation (UVC))
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit
Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
1. Verify that DTC B1405 is not set.
瀚慖f DTC is set, refer to DTC B1405 (See: B Code Charts/B1405).
2. Verify that DTC B0958 3A, B0959 3A, B0960 3A, or B0961 3A is not set.
瀚慖f DTC is set, replace the appropriate object alarm sensor.
3. Transmission in REVERSE, verify the parking assist system is enabled and one audible beep sounds.
Circuit/System Testing
