Buick Regal: DTC B390C
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 B390C
Long Range Radar Sensor Module
Circuit/System Description
After replacement, the radar sensor module - long range must complete an
alignment procedure. The
alignment procedure can be completed by driving the vehicle for approximately 30
min.
Conditions for Running the DTC
- Module alignment procedure started.
- Vehicle operating on the road.
Conditions for Setting the DTC
The radar sensor module - long range was unable to complete alignment process
within approximately
30 min of drive time.
Action Taken When the DTC Sets
- The radar sensor module - long range is disabled.
- Any systems that rely on data from the radar sensor module - long range
are disabled.
- A service message may be displayed on the driver information center.
Conditions for Clearing the DTC
The radar sensor module - long range is successfully aligned.
Diagnostic Aids
- The B233B Radar Sensor Module - Long Range must be securely mounted.
Verify it is secured
properly in it's mount.
- The harness, or other obstructions should not pass in front of the B233B
Radar Sensor Module -
Long Range
Reference Information
Schematic Reference
Driver Assistance Systems Wiring Schematics
Connector End View Reference
COMPONENT CONNECTOR END VIEWS - INDEX
Description and Operation
Active Safety System 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 for scan tool information.
Circuit/System Verification
1. Ignition ON.
2. Verify DTC B390C is not set
- Perform the Radar Sensor Module - Long Range Learn procedure.
- Verify DTC B390C is not set after the calibration procedure has been
completed.
- If the DTC is set after calibration, replace the B233B Radar Sensor
Module - Long
Range.
- Go to next step: If the DTC is not set after calibration
- All OK.
- Go to next step: If DTC B390C 66 is not set
3. All OK.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the repair.
Control Module References for radar sensor module - long range replacement,
programming, and
setup.
DTC B390D
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 B390D
Frontview Camera Module
Circuit/System Description
The frontview camera module has determined that it is not properly mounted.
Conditions for Running the DTC
Vehicle operating on the road.
Conditions for Setting the DTC
The frontview camera module is improperly mounted.
Action Taken When the DTC Sets
- All system that operate with input from the frontview camera module are
disabled.
- A service message may be displayed on the driver information center.
Conditions for Clearing the DTC
The frontview camera module is successfully aligned.
Diagnostic Aids
- The frontview camera module must be securely mounted. Verify it is
secured properly in it's
bracket.
- The frontview camera module must have a clear field of vision to the
road ahead. Check for
anything that may impair the frontview camera module's ability to clear see
the area in front of the
vehicle.
Reference Information
Schematic Reference
Driver Assistance Systems Wiring Schematics
Connector End View Reference
Master Electrical Component List
Description and Operation
Active Safety System 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 for scan tool information.
Circuit/System Verification
1. Ignition ON.
2. Verify there are no DTCs set, except for DTC B390D.
- If any other DTCs are set
Refer to Diagnostic Trouble Code (DTC) List - Vehicle.
- Go to next step: If no other DTCs are set
NOTE: Before performing the calibration, verify that the B174W
Frontview
Camera - Windshield will not have difficulty seeing lane markings in
front of the vehicle. If the view of the B174W Frontview Camera -
Windshield is blocked with mud, dirt, snow, ice, or slush, if the
windshield is damaged, or if weather limits visibility, such as while
driving in fog, rain, or snow conditions, the calibration procedure
may not be able to be completed.
3. Calibrate the B174W Frontview Camera - Windshield. Refer to Front View
Camera Module
Learn.
4. Verify DTC B390D is not set
Replace the B174W Frontview Camera - Windshield.
- Go to next step: If DTC B390D is not set
5. All OK.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the repair.
Control Module References for control module replacement, programming, and
setup.
READ NEXT:
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.
Diag
NOTE: The following steps must be completed before using the symptom
tables:
1. Perform the Diagnostic System Check - Vehicle before using the Symptom
Tables in order to
verify that all of the follo
Diagnostic Instructions
Perform the Diagnostic System Check prior to using this diagnostic
procedure: Diagnostic
System Check - Vehicle
Review the description of Strategy Based Diagnosis: Strate
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Press the button on a tie-down and
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detailed measurement procedures must be
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b