B0968

DTC B0967 or B0968

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 B0967 02
- Parking Aid On/Off Switch Circuit Short to Ground

DTC B0968 01
- Parking Aid On/Off Switch Indicator Circuit Short to Battery

DTC B0968 06
- Parking Aid On/Off Switch Indicator Circuit Low Voltage/Open

Diagnostic Fault Information





Circuit/System Description

The parking assist can be activated/deactivated by pressing the parking assist switch. By engaging the reverse gear the parking assist can also be activated. By subsequently pressing the parking assist switch the parking assist can be disabled again.

The indicator in the parking assist switch shows the status of the parking assist. If the lamp is ON, the parking assist is activated.

Conditions for Running the DTC

* Ignition ON
* The parking assist is activated. The activation takes place by putting in the reverse gear or by pressing the parking assist switch.

Conditions for Setting the DTC

B0967 02

The parking assist control module has detected a short to ground.

B0968 01

The parking assist control module has detected a short to battery.

B0968 06

The parking assist control module has detected a short to ground or open.

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 (Connector End Views By Name)
Description and Operation

Object Detection Description and Operation (UVC) (Object Detection (UVC))Object Detection Description and Operation (UD5) (Object Detection Description and Operation (UD5))
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 (Programming and Relearning)

Circuit/System Verification

1. Verify that DTC B0967 02 is not present.

• If DTC is present, refer to Parking Assist Switch Malfunction.

2. Verify that B0968 01 or B0968 06 is not present.

• If DTC is present, refer to Parking Assist Switch Indicator Malfunction.

3. Activate and deactivate the parking assist switch and verify the scan tool Park Assist Switch parameter changes between Active and Inactive.

Circuit/System Testing

Parking Assist Switch Circuit Malfunction
1. Ignition OFF, disconnect the harness connector at the S48E multi-function switch module - center console.
2. Test for less than 10 ohm between the ground circuit terminal 2 and ground.

• If greater than the specified value, test the ground circuit for an open/high resistance.

3. Connect the harness connector at the S48E multi-function switch module - center console.
4. Disconnect the X1 harness connector at the K41 parking assist control module.
5. Ignition ON, test for less than 0.3 V between the signal circuit terminal 8 X1 and ground.

• If greater than the specified value, test the signal circuit for a short to voltage.

6. Ignition ON, verify that a test lamp does not illuminate between the B+ circuit terminal 1 X1 and signal circuit terminal 8 X1.

• If the test lamp illuminates, test signal circuit for a short to ground. If the circuit tests normal, replace the S48E multi-function switch module - center console.

7. Verify that the test lamp illuminates between the B+ circuit terminal 1 X1 and signal circuit terminal 8 X1 while pressing the parking assist switch.

• If the test lamp does not illuminate, test the signal circuit for an open/high resistance. If all circuits test normal, replace the S48E multi-function switch module - center console.

8. If all circuits test normal, replace the K41 parking assist control module.

Parking Assist Switch Indicator Circuit Malfunction
1. Ignition OFF, disconnect the harness connector at the S48E multi-function switch module - center console.
2. Ignition ON, test for B+ between the ignition circuit terminal 3 and ground.

• If less than the specified value, test the ignition circuit for a short to ground or an open/high resistance.

3. Command the Park Assist Switch LED output control ON with the scan tool. Test for B+ between the ignition circuit terminal 3 and the signal circuit terminal 6.

• If less than the specified value, test the signal circuit for an open/high resistance. If all circuits test normal, replace the K41 parking assist control module.

4. Command the Park Assist Switch LED output control OFF with the scan tool. Test for less than 0.3 V between the ignition circuit terminal 3 and the signal circuit terminal 6.

• If greater than the specified value, test the signal circuit for a short to ground. If all circuits test normal, replace the K41 parking assist control module.

5. If all circuits test normal, replace the S48E multi-function switch module - center console.

Repair Instructions

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

* Accessory Switch Replacement (Service and Repair)
* Control Module References (Programming and Relearning) for parking assist control module replacement, programming and setup