Wireless Communication Interface Antenna Malfunction (UHP)

/ 9-5 (9650) / 2011 / 3. Electrical System / Audio system with navigation / Fault diagnosis, fault symptoms / Wireless Communication Interface Antenna Malfunction (UHP)

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 wireless communication interface antenna is a small fixed antenna connected directly to the mobile telephone control module and is used to send and receive signals from a wireless communication interface enabled cellular telephone. 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 wireless communication interface 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 Mobile Telephone Control Module to pair to a wireless communication interface device.

•	Before performing this test, verify compatibility of the cellular telephone the customer is attempting to use with the vehicle. Based on the cellular phone and the manufacturer's implementation of Bluetooth ®, not all phones support all available wireless communication interface functionality.

•	If a 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 wireless communication interface test tool or equivalent can also be used to verify the ability of the customers cellular phones to pair with another device.

Reference Information

Schematic Reference

Cellular Telephone Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Cellular Telephone 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 DTC B2485 is not set.

2.	If DTC B2485 is set, refer to DTC B2485 .

3.	Set up a wireless communication interface test tool or equivalent.

4.	Follow the instructions provided in the Vehicle Owners Manual for pairing a device. Verify successful pairing with the test tool.

5.	If pairing is not successful, repeat the pairing process. If pairing is still not successful, replace the K82 Mobile Telephone Control Module.

6.	Refer to Diagnostic Aids.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for mobile telephone control module replacement, setup and programming

Our Friends