Wireless Communication Interface Antenna Malfunction (UHP)
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Wireless Communication Interface Antenna Malfunction (UHP)
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Circuit/System Description
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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.
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The purpose of this diagnostic is to verify the ability of the Mobile Telephone Control Module to pair to a wireless communication interface device.
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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.
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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.
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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.
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Schematic Reference
Cellular Telephone Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Cellular Telephone Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References
for scan tool information
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Circuit/System Verification
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1.
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Verify DTC B2485 is not set.
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3.
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Set up a wireless communication interface test tool or equivalent.
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4.
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Follow the instructions provided in the Vehicle Owners Manual for pairing a device. Verify successful pairing with the test tool.
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5.
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If pairing is not successful, repeat the pairing process. If pairing is still not successful, replace the K82 Mobile Telephone Control Module.
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6.
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Refer to Diagnostic Aids.
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Perform the
Diagnostic Repair Verification
after completing the diagnostic procedure.
Control Module References
for mobile telephone control module replacement, setup and programming
