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B094E




DTC B094D or B094E

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 B094D 01
- Left Side Object Detection Indicator Circuit Short to Battery

DTC B094D 02
- Left Side Object Detection Indicator Circuit Short to Ground

DTC B094E 01
- Right Side Object Detection Indicator Circuit Short to Battery

DTC B094E 02
- Right Side Object Detection Indicator Circuit Short to Ground

Diagnostic Fault Information






Circuit/System Description

The side blind zone alert system sensors are located behind the rear fascia and detect and report objects on either side of the vehicle, within a specified blind zone. The system alerts with a visual indicator placed on each side rear view mirror, to the presence of objects that may not be visible in the inside rearview mirror and outside rearview mirrors. When the system detects a vehicle in the side blind zone while driving forward, independent if passing a vehicle or being passed, an amber warning symbol will light up in the appropriate outside mirror. This indicates that it may be unsafe to change lanes. If the driver then activates the turn signal, the amber warning symbol starts flashing and a chime sounds to give an extra warning not to change lanes. The Side Object Sensor Module provides the voltage to the outside rearview mirror to illuminate the Side Blind Zone alert symbol on the mirror.

Side blind zone alert is active from speeds of 10 km/h (6.2 MPH) up to 140 km/h (87 MPH). Driving faster deactivates the system, indicated by low lighting warning symbols in the mirrors. Driving under this speed again will turn off the warning symbols. If then a vehicle is detected in blind zone, the warning symbols will illuminate normally on the appropriate side. When the vehicle is started, both outside mirror displays will briefly come on to indicate that the system is operating.

Conditions for Running the DTC

* Engine running.

* The Side blind zone alert is active from speeds of 10 km/h (6.2 MPH) up to 140 km/h (87 MPH).

Conditions for Setting the DTC

B094D 02

The module has detected a short to ground in the outside rearview mirror - driver circuit.

B094D 01

The module has detected a short to voltage in the outside rearview mirror - driver circuit.

B094E 02

The module has detected a short to ground in the outside rearview mirror - passenger circuit.

B094E 01

The module has detected a short to voltage in the outside rearview mirror - passenger circuit.

Action Taken When the DTC Sets

The side blind zone alert system is inoperative and Service Blind Zone Alert System is displayed on the Driver Information Center.

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 Outside Rearview Mirror - Driver

Description and Operation

Object Detection Description and Operation (with rearview camera UVC) Object Detection Description and Operation (with rearview camera UVC)Object Detection Description and Operation (with side blind spot alert UFT) Object Detection Description and Operation (with side blind spot alert UFT)Object Detection Description and Operation (with parking assist UD7) Object Detection Description and Operation (with parking assist UD7)

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 OFF, ignition ON.

2. Verify the side blind zone alert system indicators located in the outside rearview mirrors briefly turn ON and then OFF during the system self test.

• If only the right side blind zone alert indicator briefly turns ON and OFF
Refer to Circuit/System Testing - Left Side Object Sensor Malfunction

• If only the left side blind zone alert indicator briefly turns ON and OFF
Refer to Circuit/System Testing - Right Side Object Sensor Malfunction

• If both side blind zone alert system indicators do not briefly turn ON and OFF
Refer to Circuit/System Testing - Side Object Indicator Malfunction

• If both side blind zone alert indicators briefly turn ON and OFF

3. All OK.

Circuit/System Testing

Left Side Object Sensor Malfunction

1. Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down. Disconnect the harness connector at the B218L Side Object Sensor Module - Left.

2. Test for less than 10 ohms between the ground circuit terminal 8 and ground.

• If 10 ohms or greater

1. Ignition OFF.

2. Test for less than 2 ohms in the ground circuit end to end.

• If 2 ohms or greater, repair the open/high resistance in the circuit.

• If less than 2 ohms, repair the open/high resistance in the ground connection.

• If less than 10 ohms

3. Verify a test lamp illuminates between the B+ circuit terminal 5 and ground.

• If the test lamp does not illuminate and the circuit fuse is good

1. Ignition Off.

2. Test for less than 2 ohms in the B+ circuit end to end.

• If 2 ohms or greater, repair the open/high resistance in the circuit.

• If less than 2 ohms, verify the fuse is not open and there is voltage at the fuse.

• If the test lamp does not illuminate and the circuit fuse is open

1. Ignition OFF.

2. Test for infinite resistance between the B+ circuit and ground.

• If less than infinite resistance, repair the short to ground on the circuit.

• If infinite resistance, replace the B218L Side Object Sensor Module - Left.

• If the test lamp illuminates

4. Replace B218L Side Object Sensor Module - Left

Right Side Object Sensor Malfunction

1. Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down. Disconnect the harness connector at the B218R Side Object Sensor Module - Right.

2. Test for less than 10 ohms between the following ground circuit terminals and ground.

* Terminal 3

* Terminal 8

• If 10 ohms or greater

1. Ignition OFF.

2. Test for less than 2 ohms in the ground circuit end to end.

• If 2 ohms or greater, repair the open/high resistance in the circuit.

• If less than 2 ohms, repair the open/high resistance in the ground connection.

• If less than 10 ohms

3. Verify a test lamp illuminates between the B+ circuit terminal 5 and ground.

• If the test lamp does not illuminate and the circuit fuse is good

1. Ignition Off.

2. Test for less than 2 ohms in the B+ circuit end to end.

• If 2 ohms or greater, repair the open/high resistance in the circuit.

• If less than 2 ohms, verify the fuse is not open and there is voltage at the fuse.

• If the test lamp does not illuminate and the circuit fuse is open

1. Ignition OFF.

2. Test for infinite resistance between the B+ circuit and ground.

• If less than infinite resistance, repair the short to ground on the circuit.

• If infinite resistance, replace the B218R Side Object Sensor Module - Right.

• If the test lamp illuminates

4. Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down.

5. Test for less than 2 ohms in each of the serial data circuits end to end between the control module harness connector terminal 7 and the DLC terminal 1.

• If 2 ohms or greater
Repair the open/high resistance in the circuit.

• If less than 2 ohms

6. Replace B218R Side Object Sensor Module - Right.

Side Object Indicator Malfunction

1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the appropriate A9 Outside Rearview Mirror. It may take up to 2 minutes for all vehicle systems to power down.

2. Test for less than 10 ohms between the ground circuit terminal 9 and ground.

• If 10 ohms or greater

1. Ignition OFF.

2. Test for less than 2 ohms in the ground circuit end to end.

• If 2 ohms or greater, repair the open/high resistance in the circuit.

• If less than 2 ohms, repair the open/high resistance in the ground connection.

• If less than 10 ohms

3. Ignition ON, connect a test lamp between the control circuit terminal 8 and the ground circuit terminal 9.

4. Verify the test lamp turns ON and OFF when commanding the Object Detection Alert Indicators ON and OFF with a scan tool.

• If the test lamp is always OFF

1. Ignition OFF, disconnect the harness connector at the appropriate B218 Side Object Sensor Module.

2. Test for infinite resistance between the control 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 control circuit end to end.

• If 2 ohms or greater, repair the open/high resistance in the circuit.

• If less than 2 ohms, replace the B218 Side Object Sensor Module.

• If the test lamp is always ON

1. Ignition OFF, disconnect the harness connector at the B218 Side Object Sensor Module, ignition ON.

2. Test for less than 1 V between the control circuit and ground.

• If 1 V or greater, repair the short to voltage on the circuit.

• If less than 1 V, replace the B218 Side Object Sensor Module.

• If the test lamp turns ON and OFF

5. Test or replace the A9 Outside Rearview Mirror Glass.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the repair.

* Accessory Switch Replacement Service and Repair

* Control Module References Control Module References for advanced parking assist control module replacement, programming and setup.

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