B0953

DTC B0953

DTC DESCRIPTOR

DTC B0953 00
Parking Aid Radio Output Circuit

DIAGNOSTIC FAULT INFORMATION

IMPORTANT: Always perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Testing and Inspection

CIRCUIT/SYSTEM DESCRIPTION
The object alarm detection system senses how close the vehicle is to an object. The distance is determined by the 4 ultrasonic sensors located in the rear and front (if equipped) bumpers. The object detection system operates only at speeds less than 5 mph (8km/h), which make parking easier and helps you avoid colliding with objects such as parked vehicles. The object detection system will notify the driver when backing up or moving forward while parking at speeds less than 5 mph (8km/h). The object detection system will use serial data communications to communicate with the radio to chime through the speakers along with the park assist indicators for notification. If the vehicle does not come equipped with a radio from the factory then the object alarm detection system will use an external dedicated speaker.

CONDITIONS FOR RUNNING THE DTC
Ignition voltage is between 9-16 volts.

CONDITIONS FOR SETTING THE DTC
The object alarm module signal circuit is shorted to battery, short to ground, or an open condition existing for 300 milliseconds.

ACTION TAKEN WHEN THE DTC SETS
- The object detection alarm module sets a DTC.
- The object detection alarm module commands ON the information center telltale red indicator.
- The object detection alarm module will send a serial data communication message to the instrument panel (I/P) to scroll SERVICE PARK ASSIST message on the driver information center (DIC), and the chime will sound.

CIRCUIT/SYSTEM TESTING

IMPORTANT: When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector.

- The external speaker
- The front and rear object alarm module
- The external speaker wiring harness connector
- The front and rear object alarm module wiring harness connector

1. Ignition OFF, if DTC B0953 is current, disconnect the external speaker connector.
2. Remove the front and rear object alarm module connector.
3. Test both speaker circuits between the front and rear object alarm module and the speaker. Verify that a short to voltage, short to ground, or open/low resistance does not exist.
- If any of the above conditions are found make the appropriate repair.
4. Reconnect all components. Ignition ON, use the scan tool to clear the DTCs then recheck for DTCs. Verify DTC B0953 does not set.
- If DTC B0953 was current replace the external speaker. After replacement refer to Repair Verification.

REPAIR INSTRUCTIONS
Control Module References for Front and Rear Object Alarm Module Replacement, setup, and programming

REPAIR VERIFICATION
Ignition ON, use the scan tool to clear the DTCs then recheck for DTCs. Verify no DTCs are set.
- If DTC B0953 was current replace the front and rear object alarm module.