Bluetooth Malfunction

Bluetooth Malfunction

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.

* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provide an overview of each diagnostic category.

Circuit/System Description

The Bluetooth (R) antenna is a small fixed antenna connected directly to the telematics communication interface control module and is used to send and receive signals from a Bluetooth (R) enabled cellular phone. The antenna utilizes no cabling and is not external to the vehicle.

In order to use hands-free calling, the cellular phone must be paired to the vehicle. Up to five devices can be paired to the vehicle at one time, but only one can be connected at any given time. To pair a phone, the customer must know how to operate the Bluetooth (R) functionality of their phone. The pairing process must only be done one time for each phone, unless that phone's information is deleted. For safety reasons, the pairing process is disabled while the vehicle is moving.

Diagnostic Aids

* The purpose of this diagnostic is to verify the ability of the telematics communication interface control module to pair to a Bluetooth (R) device.

* Before performing this test, verify compatibility of the cellular phone(s) the customer is attempting to use with the vehicle. Based on the cellular phone's service provider and the manufacturer's implementation of Bluetooth (R), not all phones support all available Bluetooth (R) functionality. A vehicle and feature compatibility list will be provided via the GM Bluetooth (R) website: http://www.onstar.com/web/Bluetooth/

* If the vehicle passes the following tests and a compatible device is being used, the concern may be due to a device malfunction or an incomplete/improper pairing attempt.

* A Bluetooth (R) test tool or equivalent can also be used to verify the ability of the customers cellular phone(s) to pair with another device.

Schematic Reference

OnStar Schematics OnStar Schematics

Connector End View Reference

Component Connector End Views 1-2 Shift Solenoid (SS) Valve (M30)

Description and Operation

OnStar Description and Operation OnStar

Electrical Information Reference

* Circuit Testing Circuit Testing

* Connector Repairs Connector Repairs

* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections

* Wiring Repairs Wiring Repairs

Scan Tool Reference

Control Module References Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON.

2. Verify DTC B2485 is not set.

• If DTC B2485 is set
Refer to DTC B2485 (with UE1) B2485

• If DTC B2485 is not set

3. Verify that the vehicle appears in the list of available devices when performing the discovery/search operation on a Bluetooth (R) test tool or equivalent.

• If the vehicle does not appear in the list of available devices after repeated attempts
Refer to Circuit/System Testing

• If the vehicle appears in the list of available devices

4. Verify successful pairing with test tool when utilizing instructions provided in the Vehicle Owners Manual.

• If pairing is not successful after repeated attempts
Refer to Circuit/System Testing

• If pairing is successful

5. All OK.

Circuit/System Testing

1. Ignition ON.

2. Verify that the vehicle appears in the list of available devices when performing the discovery/search operation on a Bluetooth (R) test tool or equivalent.

• If the vehicle does not appear in the list of available devices after repeated attempts

1. Ignition OFF.

2. Replace the T4S Wireless Communication Antenna - Bluetooth (R).

3. Verify that the vehicle appears in the list of available devices when performing the discover/search operation on a Bluetooth (R) test tool or equivalent.

• If the vehicle does not appear in the list of available devices after repeated attempts, replace the K73 telematics communication interface control module

• If the vehicle appears in the list of available devices

4. All OK.

• If the vehicle appears in the list of available devices

3. Verify successful pairing with test tool when utilizing instructions provided in the Vehicle Owners Manual.

• If pairing is not successful after repeated attempts
Replace the K73 telematics communication interface control module

• If pairing is successful

4. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the repair.

* Wireless Communication Interface Antenna Replacement Service and Repair

* Control Module References Control Module References for telematics communication interface control module replacement, programming and setup.