B1243

DTC B1243 or B1248

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category



DTC Descriptor
DTC B1243 00
- CD-Player Load or Unload Performance

DTC B1248 00
- CD Changer Load/Unload mechanism Performance




Circuit/System Description

When the ignition is turned ON, the radio performs a self test to verify if any critical malfunction exists within the system.


Conditions for Running the DTC

The CD player/changer recovers from loading/ejecting error.


Conditions for Setting the DTC

The CD player/changer experiences a loading/ejecting error.


Action Taken When the DTC Sets

The radio displays a "Mechanism Error" message temporarily.


Conditions for Clearing the DTC

* The condition for setting the DTC is no longer present.
* The history DTC will clear after 50 fault-free ignition cycles.



Reference Information
Schematic Reference

Radio/Navigation System Schematics (Radio/Navigation System Schematics)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

Radio/Audio System Description and Operation (Radio/Audio System Description and Operation)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information


Circuit/System Verification

1. Ignition ON, with a scan tool clear all DTCs.
2. Radio ON, play a known good CD. Eject and reinsert the CD several times.

• If the DTC resets, replace the radio.




Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.


Control Module References (Programming and Relearning) for radio replacement, setup, and programming