SAAB WIS ONLINE

DTC B356A

DTC B356A

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 Descriptors

DTC B356A 02

Vehicle Direction Warning Switch Circuit Short to Ground

DTC B356A 05

Vehicle Direction Warning Switch Circuit High Voltage/Open

Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Lane Departure Warning Switch Signal

B356A 02

B356A 05

B356A 05

-

Lane Departure Warning Switch Ground

-

B356A 05

-

-



Circuit/System Description

The lane departure warning is enabled and disabled through a switch located in the multifunction switch at the center console. When enabled, the vehicle direction camera control module will illuminate the indicator located in the switch.

Conditions for Running the DTC

Ignition ON

Conditions for Setting the DTC

B356A 02

The vehicle direction camera control module has detected a short to ground or closed for more than 20 s.

B356A 05

The vehicle direction camera control module has detected a short to battery or open.

Action Taken When the DTC Sets


• Lane departure warning is disabled.

• SERVICE LANE DEPARTURE 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

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation (Traffic Sign Assist) Object Detection Description and Operation (Parking Assist with Parallel Parking) Object Detection Description and Operation (Parking Assist) Object Detection Description and Operation (Lane Departure Warning) Object Detection Description and Operation (UFT) Object Detection Description and Operation (UVC)

Electrical Information Reference


• Circuit Testing

• Connector Repairs

• Testing for Intermittent Conditions and Poor Connections

• Wiring Repairs


Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

Ignition ON, observe the scan tool Vehicle Direction Camera Switch Status parameter while pressing and releasing the lane departure warning switch. The parameter should change between Open and Closed.

Circuit/System Testing


1. Ignition OFF, disconnect the harness connector at the S48E Multifunction Switch - Center Console.

2. Test for less than 10 Ω between the S48E Multifunction Switch - Center Console ground circuit terminal 2 and ground.

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

4. Ignition ON, verify the scan tool Vehicle Direction Camera Switch Status parameter is Open.

5. If not the specified value, test the signal circuit terminal 7 for a short to ground. If the circuit tests normal, replace the K74 Vehicle Direction Camera Control Module.

6. Install a 3 A fused jumper wire between the signal circuit terminal 7 and ground circuit terminal 2. Verify the scan tool Vehicle Direction Camera Switch Status parameter is Closed.

7. If not the specified value, test the signal circuit terminal for a short to battery or an open/high resistance. If the circuit tests normal, replace the K74 Vehicle Direction Camera Control Module.

8. If all circuits test normal, replace the S48E Multifunction Switch - Center Console.


Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.


• Front Floor Console Multifunction Switch Replacement

• Control Module References for vehicle direction camera control module replacement, setup and programming