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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 15 (Cellular, Entertainment, And Navigation - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC B13A7 >> Circuit/System Description

Circuit/System Description

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The T35FB Radio Antenna Amplifier - FM2 is enabled when the A11 Radio is turned on. The A11 Radio provides battery voltage to the T35FB Radio Antenna Amplifier - FM2 using the center conductor of the antenna coaxial cable. When a 10 V signal is seen on the center conductor of the antenna coax, FM signals are amplified.

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