Chevrolet Trax: Bluetooth malfunction (onstar)

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 provide an overview of each diagnostic category.

Circuit/System Description

The Bluetooth antenna is internal to, or 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 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 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 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 , not all phones support all available Bluetooth functionality. A vehicle and feature compatibility list will be provided via the GM Bluetooth website
• 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 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/Telematics Schematics (Encore), OnStar/Telematics Schematics (Trax)

Connector End View Reference

WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - TRAX

Description and Operation

OnStar 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

Special Tools

EL-50334-20 Multi-Media Interface Tester (Multi-Media Interface Tool)

Circuit/System Verification

1. Ignition ON.
2. Verify no DTCs are set.

• If any DTCs are set

Refer to Diagnostic Trouble Code (DTC) List - Vehicle

• If no DTCs are set

NOTE: The Multi-Media Interface Tool can be used to test either cellular phone or streaming audio functions. Refer to the tool instructions, and perform the appropriate test(s) related to the customers concern in the following steps.

3. Ignition ON, infotainment system ON.
4. Verify the infotainment system successfully pairs with the Multi-Media Interface Tool.

If the infotainment system does not successfully pair with the Multi-Media Interface Tool.

1. Verify the vehicle is equipped with an external Bluetooth Antenna.

• If not equipped with an external Bluetooth Antenna, replace the K73 Telematics Communication Interface Control Module
• If equipped with an external Bluetooth Antenna

2. Replace the Bluetooth Antenna.
3. Verify the infotainment system successfully pairs with the Multi-Media Interface Tool.

• If the infotainment system does not successfully pair with the Multi-Media Interface Tool, replace the K73 Telematics Communication Interface Control Module.
• If the infotainment system successfully pairs with the Multi-Media Interface Tool.

4. All OK.

If the infotainment system successfully pairs with the Multi-Media Interface Tool.

5. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair procedure.

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

BLUETOOTH MALFUNCTION (RADIO - WITHOUT UH7)

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 provide an overview of each diagnostic category.

Circuit/System Description

Bluetooth wireless technology is a short-range communications technology intended to replace the cables connecting portable and/or fixed devices while maintaining high levels of security. The operating range of the signal is approximately 30 feet.

The available features and functions are determined by the type of device and the software within the devices being used. For a feature or function to operate, it must be supported in both devices.

The Bluetooth hardware is internal to the radio. The radio supports streaming of data (music, voice, information) from cellular phones and other mobile devices that support those features. The radio may also be capable of interfacing with cellular phones for hands-free features.

Refer to the vehicle owners manual, supplements, and the device manufacturers information for information on devices, control, operation. and pairing instructions.

Diagnostic Aids

• Verify the mobile device is properly configured for the feature being used. Refer to the device manufacturers information.
• Verify the function/feature that is being used is supported by the mobile device.
• The device must be paired to the radio to use the available Bluetooth feature(s). The pairing process must only be performed once for each device, unless that device's information is deleted.
• The system can store pairing information for multiple devices, but can only be actively connected to one at any given time.

Reference Information

Schematic Reference

Radio/Navigation System Schematics (Encore), Radio/Navigation System Schematics (Trax)

Connector End View Reference

WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - INDEX - TRAX

Description and Operation

Radio/Audio System Description and Operation (with Monochrome Display), Radio/Audio System Description and Operation (with Color Display)

Description and Operation

Radio/Audio System Description and Operation (with Monochrome Display), Radio/Audio System Description and Operation (with Color Display)

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

Special Tools

EL-50334-20 Multi-Media Interface Tester (MIT)

For equivalent regional tools, refer to Special Tools, Special Tools (MIT tool instructions).

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 A11 Radio calibrations are current.

If the radio calibrations are not current

Reprogram the A11 Radio and re-evaluate the concern.

If no update calibrations are available

NOTE: The MIT tool can be used to test either cellular phone or streaming audio functions. Refer to the tool instructions, and perform the appropriate test (s) related to the customers concern in the following steps.

3. Ignition ON, infotainment system ON.
4. Verify the infotainment system successfully pairs with the MIT tool.

If the infotainment system does not successfully pair with the MIT tool.

Replace the A11 Radio.

If the infotainment system successfully pairs with the MIT tool.

5. Verify the infotainment system successfully completes the desired feature test using the MIT tool.

If the feature test is not successful

Replace the A11 Radio.

If the feature test is successful

6. All OK. Refer to Diagnostic Aids.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for radio replacement, programming, and setup

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