GM Service Manual Online
For 1990-2009 cars only

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  B2463:  Navigation Compact Disk Player - No Disk

Circuit Description

The circuitry is internal to the navigation radio.

Conditions for Running the DTC

    • Radio ON.
    • Battery voltage must be between 9-16 volts.

Conditions for Setting the DTC

    • The navigation radio functions are activated with no navigation DVD in the navigation radio DVD slot.
    • DTC B2463 does not set if DTC B1328 or B1327 is current.

Action Taken When the DTC Sets

    • No map appears on the navigation radio when the MAP button located beside the display is pressed.
    • The PLEASE INSERT MAP DVD message appears on the navigation radio screen.
    • The navigation buttons do not function.
    • No map or blue screen appears on the display and index is not usable.

Conditions for Clearing the DTC

    • The condition responsible for setting the DTC no longer exists.
    • A history DTC will clear once 50 consecutive malfunction-free ignition cycles have occurred.

Diagnostic Aids

Important: If DTC B2465 is also set, service B2465 before servicing B2463.

Make sure the DVD installed is a navigation system map DVD defined for this system. Also be sure the label is on the top side of the installed DVD.

Reference Information

Schematic Reference

Radio/Navigation System Schematics

Connector End View Reference

Entertainment/Communication Connector End Views

Description and Operation

Navigation 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, with a scan tool clear all DTCs.
  2. Ignition ON, install a known good MAP DVD and operate the system within the Condition for Running the DTC.
  3. If the DTC resets, replace the radio.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for Radio replacement, setup, and programming