Buick Regal: DTC B361A

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 B361A 39

Head-Up Display Module Internal Malfunction

DTC B361A 4B

Head-Up Display Module Calibration Not Learned

Circuit/System Description

Internal fault detection and calibration of the head-up display is handled within the instrument cluster.

No external circuit diagnosis is involved.

Conditions for Running the DTC

Ignition ON.

Conditions for Setting the DTC

B361A 39

An internal electrical malfunction has been detected in the head-up display.

B361A 4B

The instrument cluster has not leaned a valid calibration for the head-up display.

Action Taken When the DTC Sets

Head-up display function is disabled.

Conditions for Clearing the DTC

The DTC will clear when the conditions for setting the DTC are no longer present.

Reference Information

Schematic Reference

Head-Up Display Wiring Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEW INDEX

Description and Operation

Instrument Cluster 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 B361A 4B is not set.

• If DTC B361A 4B is set

1. Program the P16 Instrument Cluster.
2. Verify the DTC does not set.
   • If the DTC sets, replace the P29 Head-Up Display.
   • Go to next step: If the DTC does not set
3. All OK.

• Go to next step: If DTC B361A 4B is not set

3. Verify DTC B361A 39 is not set.

• If DTC B361A 39 is set

Replace the P29 Head-Up Display.

• Go to next step: If DTC B361A 39 is not set

4. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Displays and Gauges Component Replacement Reference

Control Module References for the instrument cluster replacement, programming, and setup.

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