B0968

DTC B0968

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category.



DTC Descriptor
DTC B0968 00
- Parking Aid Indicator Circuit Short to Ground




Diagnostic Fault Information






Circuit/System Description

The object alarm system senses how close the vehicle is to an object. The distance is determined by the 4 ultrasonic sensors located in the rear bumpers. The object detection system will notify the driver when backing up while parking at speeds less than 8 km/h (5 mph). The object alarm system makes parking easier and helps avoid colliding with objects such as parked vehicles. The object alarm system will use the telltale assembly information center indicators and the radio speakers to notify the driver when an object is within the object alarm system field of view. Power is provided to the telltale assembly information center by the object alarm module via the telltale assembly supply voltage circuit. The telltale assembly information center indicators are controlled by the object alarm module via the indicator control circuits. The object alarm module provides the ground for the indicator control circuits.


Conditions for Running the DTC

Ignition voltage is between 9-16 volts.


Conditions for Setting the DTC

* The object alarm module has detected that the telltale assembly supply voltage circuit for the rear park assist indicator is shorted to ground.
* The rear object alarm module has detected that one of the three indicator control circuits for the rear park assist is shorted to ground.



Action Taken When the DTC Sets

* The object alarm module commands ON the telltale assembly information center red indicator and disables the object detection system.
* The object alarm module will send 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 from the radio speakers.



Conditions for Clearing the DTC

* The DTC becomes history when the conditions for setting the DTC are no longer present.
* The history DTC clears after 40 malfunction-free warm-up cycles.



Reference Information
Schematic Reference

Object Detection Schematics ([1][2]Collision Avoidance and Parking Assist Systems)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

Object Detection Description and Operation (RPA) (Object Detection Description and Operation (RPA))Object Detection Description and Operation (PIDS) (Object Detection Description and Operation (PIDS))
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

Control Module References (Programming and Relearning) for Scan Tool Information


Circuit/System Verification

The red indicator displays continuously in the rear or front telltale assembly information center. If red indicator is not flashing, check if DTC is history.


Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the telltale assembly information center.
2. Ignition ON, transmission in reverse. Verify a test lamp illuminates when connected between the supply voltage circuit terminal A and ground.

• If the test lamp does not illuminate, test the supply voltage circuit for a short to ground or an open/high resistance.

3. Ignition ON, transmission in reverse. Verify that a test lamp illuminates when connected between the supply voltage circuit terminal A and the following control circuit terminals while performing the scan tool LED test.

* Telltale assembly indicator control circuit terminal 4
* Telltale assembly indicator control circuit terminal 5
* Telltale assembly indicator control circuit terminal 6


• If the test lamp does not illuminate for one or more indicator control circuits, test the suspect indicator control circuit for a short to ground or an open/high resistance. If all the circuits test normal, replace the telltale assembly information center.

4. If all circuits test normal, test or replace the object alarm module.



Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

* Information Center Telltale Malfunction (Information Center Telltale Malfunction)
* Control Module References (Programming and Relearning) for object alarm module replacement, setup, and programming