DTC B1779:
Hands Free Telephone Steering Wheel Open or Short to Battery or Switch Failure
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Connect the HDS to the DLC.
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Clear the DTCs with the HDS.
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Turn the ignition switch to LOCK (0), then start the vehicle and turn the steering wheel back and forth several times.
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Check for DTCs with the HDS.
YES
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NO
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Intermittent failure, the system is OK at this time.■
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Turn the ignition switch to LOCK (0).
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Disconnect Hands Free Telephone control unit 28P connector.
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Disconnect HFT switch 5P connector.
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Turn the ignition switch to ON (II).
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Measure the voltage of the HFT switch connector (5P) terminal No. 3 to body ground.
YES
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Repair short in the wire between the Hands Free Telephone control unit and the HFT switch.■
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NO
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Turn the ignition switch to LOCK (0).
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