For 1990-2009 cars

### Diagnostic Instructions

• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

• | Review Strategy Based Diagnosis for an overview of the diagnostic approach.

• | Diagnostic Procedure Instructions provides an overview of each diagnostic category.

### DTC Descriptor

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 | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance
--- | --- | --- | --- | ---
Parking Assist Switch Signal | B0967 02 | 1 | -- | --
Parking Assist Switch Indicator Control | B0968 06 | B0968 06 | B0968 01 | --
Parking Assist Switch Ground | -- | B0968 06 | -- | --
1. Parking Assist Switch Malfunction

### 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 object alarm module has detected a short to ground.

#### B0968 01

The object alarm module has detected a short to battery.

#### B0968 06

The object alarm module has detected a short to ground or open.

### Action Taken When the DTC Sets

• | The parking assist is disabled.

• | The parking assist indicator in the instrument panel cluster will be activated.

### Conditions for Clearing the DTC

The condition for setting the DTC is no longer present.

### Reference Information

#### Schematic Reference

Object Detection Schematics

#### Connector End View Reference

Component Connector End Views

#### Description and Operation

Object Detection Description and Operation

#### Electrical Information Reference

• | Circuit Testing

• | Connector Repairs

• | Testing for Intermittent Conditions and Poor Connections

• | Wiring Repairs

#### Scan Tool Reference

Control Module References

### 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 Malfunction

1. Ignition OFF, disconnect the X3 harness connector at the K41 Object Alarm Module.
2. Test for infinite resistance between the input signal circuit terminal 8 (X3) at the K41 Object Alarm Module harness connector and ground.

⇒ | If less than the specified range, test input signal circuit for a short to ground. If the circuit tests normal, replace the S48D Multifunction Switch - I/P 2.

3. If all circuits test normal, replace the K41 Object Alarm Module.

#### Parking Assist Switch Indicator Malfunction

1. Ignition OFF, disconnect the X3 harness connector at the K41 Object Alarm Module and the X1 harness connector at the S48D Multifunction Switch - I/P 2.
2. Test for less than 5 Ω between the S48D Multifunction Switch - I/P 2 ground circuit terminal 2 (X1) and ground.

⇒ | If greater than the specified range, test the ground circuit for an open/high resistance.

3. Ignition ON, test for less than 0.3 V between the control circuit terminal 3 (X3) at the K41 Object Alarm Module harness connector and ground.

⇒ | If greater than the specified range, test the control circuit for a short to voltage.

4. Ignition OFF, test for infinite resistance between the control circuit terminal 3 (X3) at the K41 Object Alarm Module harness connector and ground.

⇒ | If less than the specified range, test control circuit for a short to ground.

5. Test for less than 5 Ω between the S48D Multifunction Switch - I/P 2 control circuit terminal 6 (X1) and the control circuit terminal 3 (X3) at the K41 Object Alarm Module harness connector

⇒ | If greater than the specified range, test the control circuit for an open/high resistance.

6. If all circuits test normal, connect the X3 harness connector to the K41 Object Alarm Module, replace the S48D Multifunction Switch - I/P 2 and verify the DTC does not reset.

⇒ | If the DTC resets, replace the K41 Object Alarm Module.

### Repair Instructions

Perform the Diagnostic Repair Verification

• | Rear Object Alarm Module Switch Replacement

• | Control Module References