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2. Turn the ignition ON, radio ON tuned to XM. Verify that DTC B1259 is not current. If the DTC B1259 is still current, replace the DRR. 3. Ignition is OFF. Disconnect the DRR antenna from the coaxial cable. Test the resistance of the antenna coaxial cable center conductor from end to end. Verify the resistance is less than If the resistance is greater than 5 ohms, replace the antenna coaxial cable. 4. Test the resistance of the antenna coaxial cable outer shield from end to end. Verify the resistance is less than 5 ohms. If the resistance is greater than 5 ohms, replace the antenna coaxial cable. 5. Test the resistance of the antenna coaxial cable between the center conductor and the outer conductor. Verify there is infinite resistance between both conductors. If there is less than infinite resistance between the inner conductor and the outer Repair Procedures Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Digital Radio Antenna Cable Replacement Cellular Communications/Digital Radio Antenna Replacement Digital Radio Receiver Replacement DTC B2455 Circuit Description The vehicle communication interface module (VCIM) detects that the cellular microphone is DTC Descriptor This diagnostic procedure supports the following DTC: DTC B2455 Cellular Phone Microphone Circuit Malfunction Conditions for Running the DTC The ignition must be in the RUN or ACC position.
2007 Hummer H3 2007 ACCESSORIES AND EQUIPMENT Cellular, Entertainment and Navigation - H3
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