B356A

DTC B356A

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 B356A 02
- Vehicle Direction Warning Switch Circuit Short to Ground

DTC B356A 05
- Vehicle Direction Warning Switch Circuit Short to Voltage or an Open/High Resistance

Circuit/System Description

The lane departure warning is enabled and disabled through a switch located in the instrument panel. When the switch is pressed once, the vehicle direction camera control module disables or enables the lane departure warning. When the lane departure warning system is enabled the vehicle direction camera control module will illuminate the indicator in the switch.

Conditions for Running the DTC

Ignition ON.

Conditions for Setting the DTC

DTC B356A 02

The vehicle direction camera control module has detected a short to ground for more than 10 s.

DTC B356A 05

The vehicle direction camera control module has detected a short to voltage or an open/high resistance for more than 10 s.

Action Taken When the DTC Sets

* Lane departure warning is disabled.

* Lane Departure Unavailable 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 Sunshade - Left Front

Description and Operation

Object Detection Description and Operation (UD7) Object Detection (UD7)Object Detection Description and Operation (Front View Camera with UEU) Object Detection Description and Operation (Front View Camera with UEU)Object Detection Description and Operation (Front View Camera with UFL) Object Detection Description and Operation (Front View Camera with UFL)Object Detection Description and Operation (UVC) Object Detection (UVC)

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 the scan tool Vehicle Direction Warning Switch Status parameter while pressing and releasing the vehicle direction warning switch. The parameter should change between On and Off.

• If the parameter does not change
Refer to Circuit/System Testing.

• If the parameter changes

3. All OK.

Circuit/System Testing

1. Ignition OFF, remove the ignition key, open the driver door, disconnect the scan tool, all vehicle systems OFF, this may take up to 2 min. Disconnect the harness connector at the S48D Multifunction Switch 2 - Instrument Panel.

2. Test for less than 10 ohms between the ground circuit terminal 1 and ground.

• If 10 ohms or greater

1. 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.

4. Verify the scan tool Vehicle Direction Warning Switch Status parameter is Off.

• If not Off

1. Ignition OFF, disconnect the harness connector at the K74 Vehicle Direction Camera Control Module.

2. Test for infinite resistance between the signal circuit terminal 4 at the S48D Multifunction Switch 2 - Instrument Panel and ground.

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

• If infinite resistance, replace the K74 Vehicle Direction Camera Control Module.

• If Off

5. Install a 3 A fused jumper wire between the signal circuit terminal 4 and ground circuit terminal 1.

6. Verify within 10 s the scan tool Vehicle Direction Warning Switch Status parameter is On.

• If not On

1. Test for less than 1 V between the signal circuit terminal 4 and ground.

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

• If less than 1 V.

2. 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 K74 Vehicle Direction Camera Control Module.

• If On

7. Replace the S48D Multifunction Switch 2 - Instrument Panel.

8. Verify that the DTC does not set while operating the vehicle within the conditions for Running the DTC.

• If the DTC sets
Replace the K74 Vehicle Direction Camera Control Module.

• If the DTC does not set

9. All OK.

Repair Instructions

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

* Rear Object Alarm Control Module Replacement Service and Repair

* Rear Parking Assist Alarm Sensor Replacement Rear Parking Assist Alarm Sensor Replacement

* Control Module References Control Module References for Front View Camera Module replacement, programming and setup.