Document ID: 5323060

DTC B0958, B0959, B0960, or B0961

Diagnostic Instructions

Perform the Diagnostic System Check prior to using this diagnostic procedure:Diagnostic System Check - Vehicle
Review the description of Strategy Based Diagnosis:Strategy Based Diagnosis
An overview of each diagnostic category can be found here:Diagnostic Procedure Instructions

DTC Descriptor

DTC B0958: Parking Assist Rear Sensor Left Corner Circuit
DTC B0959: Parking Assist Rear Sensor Left Middle Circuit
DTC B0960: Parking Assist Rear Sensor Right Middle Circuit
DTC B0961: Parking Assist Rear Sensor Right Corner Circuit

Symptom Byte Information:Symptom Byte List

Diagnostic Fault Information

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
Reference Voltage—Terminal 4 X2@K182 Parking Assist Control Module	B1405 02	B0958 06, B0959 06, B0960 06, B0961 06	B1405 07	—
Signal—Terminal 1 X2@K182 Parking Assist Control Module	B0958 06	B0958 06	B0958 01	B0958 08
Signal—Terminal 3 X2@K182 Parking Assist Control Module	B0959 06	B0959 06	B0959 01	B0959 08
Signal—Terminal 7 X2@K182 Parking Assist Control Module	B0960 06	B0960 06	B0960 01	B0960 08
Signal—Terminal 5 X2@K182 Parking Assist Control Module	B0961 06	B0961 06	B0961 01	B0961 08
Low Reference—Terminal 8 X2@K182 Parking Assist Control Module	—	B0958 06, B0959 06, B0960 06, B0961 06	—	—

Circuit/System Description

For an overview of the component/system, refer to:Parking Assist Description and Operation

Circuit	Description
Reference Voltage	Regulated voltage supplied by the control module.
Signal	The control module input circuit has an internal resistance connected to 9 V.
Low Reference	Grounded through the control module.

Component	Description
K182 Parking Assist Control Module	The assembly has several functions: { If equipped }Front Parking Assist Rear Parking Assist
B306 Parking Assist Sensor	The sensors can send and receive ultrasonic sounds. First a short sound is emitted. If there is an obstacle in front of the sensor, the obstacle will reflect the sound back to the sensor. The time difference between sending and receiving is the measure for the distance to the obstacle.

Component

Description

K182 Parking Assist Control Module

The assembly has several functions:

{ If equipped }Front Parking Assist
Rear Parking Assist

B306 Parking Assist Sensor

The sensors can send and receive ultrasonic sounds. First a short sound is emitted. If there is an obstacle in front of the sensor, the obstacle will reflect the sound back to the sensor. The time difference between sending and receiving is the measure for the distance to the obstacle.

Conditions for Running the DTC

Ignition=On

Conditions for Setting the DTCB0958 01, B0959 01, B0960 01, B0961 01

Signal circuit=Short to Voltage

B0958 06, B0959 06, B0960 06, B0961 06

Signal circuit=Short to Ground
Signal circuit=Open

B0958 08, B0959 08, B0960 08, B0961 08

Parking Assist Sensors=Performance - Signal Invalid

B0958 21, B0959 21, B0960 21, B0961 21

Parking Assist Sensors=Incorrect Period

B0958 3A, B0959 3A, B0960 3A, B0961 3A

Parking Assist Sensors=Incorrect Component Installed

Actions Taken When the DTC Sets

Parking Assist=Disabled

Conditions for Clearing the DTC

The conditions for setting the DTC no longer exist.

Reference Information

Schematic Reference

Parking Assistance Systems Schematics

Connector End View Reference

Master Electrical Component List

Electrical Information Reference

Scan Tool Reference

Control Module References

Circuit/System Testing

Ignition/Vehicle & All vehicle systems » Off
Disconnect the appropriate electrical connector:

B306E Parking Assist Sensor - Rear Left Outer
B306F Parking Assist Sensor - Rear Left Middle
B306G Parking Assist Sensor - Rear Right Middle
B306H Parking Assist Sensor - Rear Right Outer

Ignition/Vehicle » On
Verify a test lamp turns On between the test points:Low Reference circuit terminal 3&B+

If the test lamp does not turn On

Disconnect the electrical connector:X2@K182 Parking Assist Control Module
Test for less than 2 Ω between the test points:Low Reference circuit terminal 3@Component harness&Low Reference circuit terminal 8@Control module harness

If 2 Ω or greater » Repair the open/high resistance in the circuit.
If less than 2 Ω » Replace the component:K182 Parking Assist Control Module

If the test lamp turns On

Ignition » On / Vehicle » In Service Mode
Test for 7.0 to 10.0 V between the test points:Reference VoltageCircuit terminal 1&Ground

If greater than 12.2 V

Ignition/Vehicle » Off
Disconnect the electrical connector:X2@K182 Parking Assist Control Module
Ignition » On / Vehicle » In Service Mode
Test for less than 1 V between the test points:Reference VoltageCircuit terminal 1@Component harness&Ground

If 1 V or greater » Repair the short to voltage on the circuit.
If less than 1 V » Replace the component:K182 Parking Assist Control Module

If less than 7.0 V

Ignition/Vehicle » Off
Disconnect the electrical connector:X2@K182 Parking Assist Control Module
Test for infinite resistance between the test points:Reference VoltageCircuit terminal 1@Component harness&Ground

If less than infinite resistance » Repair the short to ground on the circuit.

If infinite resistance

Test for less than 2 Ω between the test points:Reference VoltageCircuit terminal 1@Component harness&9 V Reference circuit terminal 4@Control module harness

If 2 Ω or greater » Repair the open/high resistance in the circuit.
If less than 2 Ω » Replace the component:K182 Parking Assist Control Module

If between 7.0 and 12.2 V

Test for 1.5 to 12.0 V between the test points:Signal circuit terminal 2&Ground

If greater than 12.0 V

Ignition/Vehicle » Off
Disconnect the electrical connector:X2@K182 Parking Assist Control Module
Ignition » On / Vehicle » In Service Mode
Test for less than 1 V between the test points:Signal circuit terminal 2@Component harness&Ground

If 1 V or greater » Repair the short to voltage on the circuit.
If less than 1 V » Replace the component:K182 Parking Assist Control Module

If less than 1.5 V

Ignition/Vehicle » Off
Disconnect the electrical connector:X2@K182 Parking Assist Control Module
Test for infinite resistance between the test points:Signal circuit terminal 2@Component harness&Ground

If less than infinite resistance » Repair the short to ground on the circuit.

If infinite resistance

Test for less than 2 Ω between the test points:Signal circuit terminal 2@Component harness&The other end of the circuit@Control module harness

If 2 Ω or greater » Repair the open/high resistance in the circuit.
If less than 2 Ω » Replace the component:K182 Parking Assist Control Module

If between 1.5 and 12.0 V

Replace the appropriate component:B306 Parking Assist Sensor

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair:Diagnostic Repair Verification

Parking Assistance Systems Component Replacement Reference
For control module replacement, programming, and setup refer to:Control Module References