• | 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 provide an overview of each diagnostic category. |
The Bluetooth ® antenna is a small fixed antenna connected directly to the communication interface module (CIM) and is used to send and receive signals from a Bluetooth ® enabled cellular phone. The antenna utilizes no cabling and is not external to the vehicle.
• | Ignition ON. |
• | Battery voltage must be between 9-16 volts. |
• | The CIM tests the antenna once every second. |
The CIM detects a short to ground or an open/high resistance in the Bluetooth ® antenna.
• | The OnStar ® status LED turns red. |
• | Bluetooth ® functionality is disabled. |
• | The condition responsible for setting the DTC no longer exists. |
• | A history DTC will clear once 100 consecutive malfunction-free ignition cycles have occurred. |
OnStar Description and Operation
Control Module References for scan tool information
⇒ | If the antenna is disconnected or damaged, repair or replace as necessary. |
⇒ | If the DTC is set, replace the Bluetooth ® antenna. Clear the DTC and cycle the ignition OFF then back ON. If the DTC resets as current, replace the CIM. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Control Module References for CIM replacement, setup, and programming |