Chevrolet Trax: Bluetooth malfunction (radio - with 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)

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 the 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: Verify the device being used for testing is capable of the Bluetooth feature(s) related to the customer concern.

2. Ignition ON, infotainment system ON.
3. Verify the infotainment system successfully pairs with a mobile device.

If the infotainment system does not successfully pair with a mobile device

1. Attempt to pair another mobile device.

• If the infotainment system cannot pair with any mobile device, replace the A11 Radio.
• If the infotainment system successfully pairs with the mobile device

2. The malfunction is related to the mobile device.

If the infotainment system successfully pairs with the mobile device

4. Verify the infotainment system performs the desired feature using the mobile device.

If the feature does not function correctly

1. Pair another mobile device.
2. Verify the infotainment system performs the desired feature using the mobile device

• If the infotainment system cannot perform the desired feature with any mobile device, replace the A11 Radio.
• If the infotainment system successfully performs the desired feature.

3. The malfunction is related to the mobile device.

If the feature functions correctly

5. 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.

READ NEXT: