Buick Regal: DTC B392C
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 B392C 39
Seat Bolster Memory Control Module Internal Malfunction
Circuit/System Description
The seat memory control module detects an internal electronic fault in the
seat bolster memory control
module. No external circuits are involved.
Conditions for Running the DTC
Ignition ON.
Conditions for Setting the DTC
The control module detects an internal fault.
An internal electronic fault in the seat bolster memory control module will
set this DTC.
Action Taken When the DTC Sets
All lumbar/bolster functions will be inoperative.
Conditions for Clearing the DTC
- The DTC clears when the diagnostic runs and passes.
- The history DTC will clear after 40 consecutive fault-free ignition
cycles have occurred.
Reference Information
Schematic Reference
- Driver Seat Wiring Schematics
- Passenger Seat Wiring Schematics
Connector End View Reference
Component Connector End View Index
Description and Operation
Lumbar Support Description and Operation (With Memory Seat A44/A45) or
Lumbar Support
Description and Operation (Without Memory Seat A44/A45)
Electrical Information Reference
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
DTC B392C
1. Ignition ON.
2. Verify DTC B392C is not set.
Replace the appropriate K134 Seat Bolster Memory Control Module.
- Go to next step: If the DTC is not set
3. All OK.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the repair.
Control Module References for K134D Seat Bolster Memory Control Module - Driver
or K134P Seat
Bolster Memory Control Module - Passenger replacement, programming and setup.
READ NEXT:
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 - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
Diag
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
SEE MORE:
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 of the
diagnostic category.
DTC Descri
If the vehicle has Adaptive Cruise
Control (ACC), it also has FAB,
which includes Intelligent Brake
Assist (IBA). When the system
detects a vehicle ahead in your path
that is traveling in the same direction that you may be about to
crash into, it can provide a boost to
braking or automatically brake