Radio Displays LOC, LOCKED, or CODE

Radio Displays LOC, LOCKED, or CODE

Diagnostic Instructions

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

Circuit/System Testing

Ignition ON, with a scan tool, reprogram the radio.

If the radio still displays LOCKED after performing the reprogramming procedure, replace the radio.

Repair Instructions

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