B1E3A

DTC B1E3A

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 Descriptors
DTC B1E3A 03
- Sensor Power Circuit Voltage Below Threshold

DTC B1E3A 07
- Sensor Power Circuit Voltage Above Threshold




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 will notify the driver when backing up while parking at speeds less than 8 km/h (5 mph), which make parking easier and helps you avoid colliding with objects such as parked vehicles. The object detection system will use front and rear display indicators and the radio speakers for notification.


Conditions for Running the DTC

Ignition voltage is between 9-16 volts.


Conditions for Setting the DTC

B1E3A 03

The object alarm module has detected the object alarm sensor supplied voltage circuit is below 7.2 volts.

B1E3A 07

The object alarm module has detected the object alarm sensor supplied voltage circuit is above 9.2 volts.


Action Taken When the DTC Sets

* The object alarm module sets a DTC.
* The object alarm module commands ON the information center telltale red indicator.
* The object 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.



Conditions for Clearing the DTC

* The DTC becomes history when the conditions for setting the DTC are no longer present.
* The object alarm module receives a clear code command from the scan tool.



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 Testing

1. Verify that DTC B1325 is not set.

• If DTC is set, refer to DTC B1325 (B1325) .

2. Verify that DTC B0958, B0959, B0960 or B0961 is not set.

• If DTC is set, refer to DTC B0958, B0959, B0960, or B0961 (B0958) .

3. Ignition ON and with the transmission range in REVERSE, verify that the scan tool Sensor Feed Voltage Output parameter is between 7.2 V - 9.2 V.

• If less than the specified range, test the supply voltage circuit terminal 4 for a short to ground or an open/high resistance. If the circuit tests normal, replace the rear object alarm module.


• If greater than the specified range, test the supply voltage circuit terminal 4 for a short to voltage. If the circuits test normal, replace the object alarm module.

4. If all circuits test normal, replace the suspect object alarm sensor.



Repair Instructions

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


Control Module References (Programming and Relearning) for object alarm module replacement, setup, and programming