B0959
DTC B0958, B0959, B0960, or B0961
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.
DTC Descriptors
DTC B0958 01
- Parking Assist Rear Sensor Left Corner Circuit Short to Battery
DTC B0958 06
- Parking Assist Rear Sensor Left Corner Circuit Low Voltage/Open
DTC B0958 08
- Parking Assist Rear Sensor Left Corner Circuit Performance - Signal Invalid
DTC B0958 21
- Parking Assist Rear Sensor Left Corner Circuit Incorrect Period
DTC B0958 3A
- Parking Assist Rear Sensor Left Corner Circuit Incorrect Component Installed
DTC B0959 01
- Parking Assist Rear Sensor Left Middle Circuit Short to Battery
DTC B0959 06
- Parking Assist Rear Sensor Left Middle Circuit Low Voltage/Open
DTC B0959 08
- Parking Assist Rear Sensor Left Middle Circuit Performance - Signal Invalid
DTC B0959 21
- Parking Assist Rear Sensor Left Middle Circuit Incorrect Period
DTC B0959 3A
- Parking Assist Rear Sensor Left Middle Circuit Incorrect Component Installed
DTC B0960 01
- Parking Assist Rear Sensor Right Middle Circuit Short to Battery
DTC B0960 06
- Parking Assist Rear Sensor Right Middle Circuit Low Voltage/Open
DTC B0960 08
- Parking Assist Rear Sensor Right Middle Circuit Performance - Signal Invalid
DTC B0960 21
- Parking Assist Rear Sensor Right Middle Circuit Incorrect Period
DTC B0960 3A
- Parking Assist Rear Sensor Right Middle Circuit Incorrect Component Installed
DTC B0961 01
- Parking Assist Rear Sensor Right Corner Circuit Short to Battery
DTC B0961 06
- Parking Assist Rear Sensor Right Corner Circuit Low Voltage/Open
DTC B0961 08
- Parking Assist Rear Sensor Right Corner Circuit Performance - Signal Invalid
DTC B0961 21
- Parking Assist Rear Sensor Right Corner Circuit Incorrect Period
DTC B0961 3A
- Parking Assist Rear Sensor Right Corner Circuit Incorrect Component Installed
Circuit/System Description
The object sensors are 3-wire sensors that are used to determine the distance between the vehicle and an object of interest. The parking assist control module supplies 8 V to the object sensors via the 8 V reference circuit and provides ground via the low reference circuit. The parking assist control module triggers the sensors in a sequential loop. After each sensor transmits, the parking assist 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
* Ignition ON
* The parking assist is activated. The activation takes place through putting in the reverse gear or through operating the park assist switch.
Conditions for Setting the DTC
B0958 01, B0959 01, B0960 01, or B0961 01
The parking assist control module has detected the voltage at the sensor circuit is greater than 11.5 V or the object sensor is not grounded.
B0958 06, B0959 06, B0960 06, or B0961 06
The parking assist control module has detected the voltage at the sensor circuit less than 0.5 V.
B0958 08, B0959 08, B0960 08, or B0961 08
The parking assist control module has received an invalid signal.
B0958 21, B0959 21, B0960 21, or B0961 21
The object sensor determines no change in the position of an object while the vehicle is in motion.
B0958 3A, B0959 3A, B0960 3A, or B0961 3A
The parking assist control module determines the wrong sensor type is installed.
Action Taken When the DTC Sets
* The parking assist is disabled.
* The driver information center displays SERVICE PARK ASSIST.
Conditions for Clearing the DTC
The condition for setting the DTC is no longer present.
Reference Information
Schematic Reference
Object Detection Schematics [1][2]Collision Avoidance and Parking Assist Systems
Connector End View Reference
Component Connector End Views Fuel Pump and Level Sensor Assembly
Description and Operation
Object Detection Description and Operation Description and Operation
Electrical Information Reference
* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs
Scan Tool Reference
Control Module References Control Module References for scan tool information
Circuit/System Verification
1. Ignition ON.
2. Verify that DTC B1405 is not set.
• If the DTC is set
Refer to DTC B1405 Object Detection
• If the DTC is not set
3. Verify that DTC B0958 01, B0959 01, B0960 01 or B0961 01 is not set.
• If the DTC is set
Check the appropriate sensor for contamination with mud. If no contamination is diagnosed, refer to Circuit/System Testing.
• If the DTC is not set
4. Verify that DTC B0958 21, B0959 21, B0960 21 or B0961 21 is not set.
• If the DTC is set
Check the appropriate sensor for contamination with mud, ice or snow. If no contamination is diagnosed, replace the sensor.
• If the DTC is not set
5. Verify that DTC B0958 3A, B0959 3A, B0960 3A or B0961 3A is not set.
• If the DTC is set
Replace the appropriate sensor with a sensor of correct sensor type.
• If the DTC is not set
6. Ignition ON, transmission in REVERSE, verify the scan tool Parking Assist System Status parameter displays Enabled.
• If the Parking Assist System displays Disabled
Refer to Circuit/System Testing.
• If the Parking Assist System displays Enabled
7. All OK.
Circuit/System Testing
1. Ignition OFF for 1 min, scan tool must be disconnected for steps 1 and 2 to allow module to power down. Disconnect the harness connector at the affected rear object sensor.
2. Test for less than 10 ohms between the low reference circuit terminal 2 and ground.
• If 10 ohms or greater
1. Ignition OFF, disconnect the harness connector X2 at the K41R Rear Parking Assist Control Module.
2. Test for less than 2 ohms in the low reference circuit end to end.
• If 2 ohms or greater, repair the open/high resistance in the circuit.
• If less than 2 ohms replace the K41R Rear Parking Assist Control Module.
• If less than 10 ohms
3. Ignition ON.
4. Test for 7.5-9.5 V between the 8 V reference circuit terminal 1 and ground.
• If less than 7.5 V
1. Ignition OFF, disconnect the harness connector at the K41R Rear Parking Assist Control Module.
2. Test for infinite resistance between the 8 V reference circuit and ground.
• If less than infinite resistance, repair the short to ground on the circuit.
• If infinite resistance
3. Test for less than 2 ohms in the 8 V reference circuit end to end.
• If 2 ohms or greater, repair the open/high resistance in the circuit.
• If less than 2 ohms, replace the K41R Rear Parking Assist Control Module.
• If greater than 9.5 V
1. Ignition OFF, disconnect the harness connector at the K41R Rear Parking Assist Control Module, ignition ON.
2. Test for less than 1 V between the 8 V reference circuit and ground.
• If 1 V or greater, repair the short to voltage on the circuit.
• If less than 1 V, replace the K41R Rear Parking Assist Control Module.
• If between 7.5-9.5 V
5. Ignition ON.
6. Test for 4.8-5.2 V between the signal circuit terminal 3 and ground.
• If less than 4.8 V
1. Ignition OFF, disconnect the harness connector at the K41R Rear Parking Assist Control Module.
2. Test for infinite resistance between the signal circuit and ground.
• If less than infinite resistance, repair the short to ground on the circuit.
• If infinite resistance
3. Test for less than 2 ohms in the signal circuit end to end.
• If 2 ohms or greater, repair the open/high resistance in the circuit.
• If less than 2 ohms, replace the K41R Rear Parking Assist Control Module.
• If greater than 5.2 V
1. Ignition OFF, disconnect the harness connector at the K41R Rear Parking Assist Control Module, ignition ON.
2. Test for less than 1 V between the signal circuit and ground.
• If 1 V or greater, repair the short to voltage on the circuit.
• If less than 1 V, replace the K41R Rear Parking Assist Control Module.
• If between 4.8-5.2 V
7. Test or replace the affected Rear Object Sensor.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the repair
* Rear Parking Assist Alarm Sensor Replacement Service and Repair
* Control Module References Control Module References for rear parking assist control module replacement, programming and setup.