| • | 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. | 
The radio monitors the CD mechanism for any errors or malfunctions during operation.
This test runs continuously.
A malfunction is detected in the CD mechnaism.
CD operation will be disabled.
The DTC will clear when a CD mechanism malfunction is no longer detected.
Radio/Audio System Description and Operation
Control Module References for scan tool information
Ignition ON, verify DTC B1240 is not set.
| ⇒ | If the DTC is set, replace the radio. | 
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for radio replacement, programming, and setup