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
Diagnostic Fault Information
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 front view camera module has detected a short to ground for more than 10 s.
DTC B356A 05
The front view camera module has detected a short to voltage 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
Description and Operation
Object Detection Description and Operation (Lane Departure Warning, UFL) Object Detection Description and Operation (Lane Departure Warning, UFL)Object Detection Description and Operation (Rear Vision Camera, UVC) Object Detection Description and Operation (Rear Vision Camera, UVC)Object Detection Description and Operation (Park Assist, UD7) Object Detection Description and Operation (Park Assist, UD7)Object Detection Description and Operation (Forward Collision Alert, UEU) Object Detection Description and Operation (Forward Collision Alert, UEU)
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 changes between On and Off while cycling the vehicle direction warning switch.
• If the parameter does not change
Refer to Circuit/System Testing.
• If the parameter changes
3. All OK.
Circuit/System Testing
1. Ignition OFF.
2. Remove the ignition key, open the driver door, disconnect the scan tool, all vehicle systems OFF, this may take up to 2 min.
3. Disconnect the harness connector at the S48D Multifunction Switch 2 - Instrument Panel.
4. 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
5. Ignition ON.
6. Verify the scan tool Vehicle Direction Warning Switch Status parameter is Off.
• If not Off
1. Ignition OFF, disconnect the harness connector at the K109 Vehicle Camera 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 K109 Vehicle Camera Module.
• If Off
7. Disconnect the harness connector at the K109 Vehicle Camera Module.
8. Install a 3 A fused jumper wire between the signal circuit terminal 4 and ground circuit terminal 1.
9. 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 K109 Vehicle Camera Module.
• If On
10. Replace the S48D Multifunction Switch 2 - Instrument Panel.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the repair.
* Instrument Panel Multifunction Switch Replacement Service and Repair
* Control Module References Control Module References for Front View Camera Module replacement, programming and setup.