Radio Malfunction

Cellular, Entertainment, and Navigation | Diagnostic Information and Procedures | Document ID: 5840057 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. Circuit/System Description The radio receives battery power and ground from the vehicle harness. The radio does not use a discrete ignition feed circuit for power moding. The power mode master provides the system power mode to the radio via serial data messages. The power mode master determines the system power mode by processing power mode information from ignition switch inputs. Serial data power modes supported by the radio are OFF, ACCESSORY, RUN, and CRANK REQUEST. The radio can be turned ON with the ignition OFF. After 10 minutes of inactivity the radio will power down. If any setting (e.g. changing the station) or volume has been changed or if the radio has been powered OFF than back ON the 10 minute timer will reset from that point. Reference Information Schematic Reference Radio/Navigation System Schematics Connector End View Reference Master Electrical Component List Description and Operation Radio/Audio 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. Verify no DTCs are present. ⇒ If any DTCs are present Refer to Diagnostic Trouble Code (DTC) List - Vehicle. ⇓ If no DTCs are present
2. Verify the info display does not show this image with the following message- Update failed. Return to dealer.

Radio Malfunction — figure 1

⇒ If the Info Display does show the image/message. Refer to Circuit/System Testing. ⇓ If the Info Display does not show the image/message. 3. All OK Circuit/System Testing

1. Attempt to USB program the radio with the latest software available via the Service Programming System (SPS).

Note

The radio is in boot mode when this image/message appears on the screen. It will automatically start the update when the USB drive is inserted into the USB port. It does not require any user interaction to initiate the update.

2. Wait at least 30 min after inserting the USB drive to allow the radio to update. ⇒ If the programming event was unsuccessful. Replace the A11 Radio. ⇓ If the programming event was successful. All OK. Repair Instructions Perform the Diagnostic Repair Verification after completing the repair. For control module replacement, programming, and setup refer to: Control Module References