2010 Cadillac CTS Sedan AWD V6-3.6L Page 262
Circuit/System Description
The object alarm sensors are 3-wire sensors that are used to determine the distance between the vehicle and an object of interest. The rear object
sensor control module supplies 8 volts to the object alarm sensors via the 8 volt reference circuit and provides ground via the low reference circuit.
The rear object sensor control module triggers the sensors in a sequential loop. After each sensor transmits, the rear object sensor control module
uses the sensor echo received through the signal circuit to calculate the distance and position of an object.
Conditions for Running the DTC
* DTC B1325 is not set
* Ignition voltage is between 9-16 volts
* Transmission in REVERSE
Conditions for Setting the DTC
B0958 01, B0959 01, B0960 01, or B0961 01
Voltage seen on the object alarm sensor signal circuit is greater than 11.5 volts or the object alarm sensor is not grounded.
B0958 06, B0959 06, B0960 06, or B0961 06
Voltage seen on the object alarm sensor signal circuit is less than 0.5 volts.
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 commands the red indicator ON.
* 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) and a chime will sound.
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 may be 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
