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